Module cc2538::aes

AES Module.

Modules

aes_auth_length	Authentication length register
aes_c_length_0	AES crypto length registers (LSW) These registers are used to write the Length values to the EIP-120t. While processing, the length values decrement to 0. If both lengths are 0, the data stream is finished and a new context is requested. For basic AES modes (ECB, CBC, and CTR), a crypto length of 0 can be written if multiple streams need to be processed with the same key. Writing 0 length results in continued data requests until a new context is written. For the other modes (CBC-MAC, GCM, and CCM) no (new) data requests are done if the length decrements to or equals 0. It is advised to write a new length per packet. If the length registers decrement to 0, no new data is processed until a new context or length value is written. When writing a new mode without writing the length registers, the length register values from the previous context is reused.
aes_c_length_1	AES crypto length registers (MSW) These registers are used to write the Length values to the EIP-120t. While processing, the length values decrement to 0. If both lengths are 0, the data stream is finished and a new context is requested. For basic AES modes (ECB, CBC, and CTR), a crypto length of 0 can be written if multiple streams need to be processed with the same key. Writing 0 length results in continued data requests until a new context is written. For the other modes (CBC-MAC, GCM and CCM) no (new) data requests are done if the length decrements to or equals 0. It is advised to write a new length per packet. If the length registers decrement to 0, no new data is processed until a new context or length value is written. When writing a new mode without writing the length registers, the length register values from the previous context is reused.
aes_ctrl	AES input/output buffer control and mode register This register specifies the AES mode of operation for the EIP-120t. Electronic codebook (ECB) mode is automatically selected if bits [28:5] of this register are all 0.
aes_data_in_out_0	Data input/output registers The data registers are typically accessed through the DMA and not with host writes and/or reads. However, for debugging purposes the data input/output registers can be accessed via host write and read operations. The registers are used to buffer the input/output data blocks to/from the EIP-120t. Note: The data input buffer (AES_DATA_IN_n) and data output buffer (AES_DATA_OUT_n) are mapped to the same address locations. Writes (both DMA and host) to these addresses load the Input Buffer while reads pull from the Output Buffer. Therefore, for write access, the data input buffer is written; for read access, the data output buffer is read. The data input buffer must be written before starting an operation. The data output buffer contains valid data on completion of an operation. Therefore, any 128-bit data block can be split over multiple 32-bit word transfers; these can be mixed with other host transfers over the external interface.
aes_data_in_out_1	Data Input/Output Registers The data registers are typically accessed via DMA and not with host writes and/or reads. However, for debugging purposes the Data Input/Output Registers can be accessed via host write and read operations. The registers are used to buffer the input/output data blocks to/from the EIP-120t. Note: The data input buffer (AES_DATA_IN_n) and data output buffer (AES_DATA_OUT_n) are mapped to the same address locations. Writes (both DMA and host) to these addresses load the Input Buffer while reads pull from the Output Buffer. Therefore, for write access, the data input buffer is written; for read access, the data output buffer is read. The data input buffer must be written before starting an operation. The data output buffer contains valid data on completion of an operation. Therefore, any 128-bit data block can be split over multiple 32-bit word transfers; these can be mixed with other host transfers over the external interface.
aes_data_in_out_2	Data Input/Output Registers The data registers are typically accessed via DMA and not with host writes and/or reads. However, for debugging purposes the Data Input/Output Registers can be accessed via host write and read operations. The registers are used to buffer the input/output data blocks to/from the EIP-120t. Note: The data input buffer (AES_DATA_IN_n) and data output buffer (AES_DATA_OUT_n) are mapped to the same address locations. Writes (both DMA and host) to these addresses load the Input Buffer while reads pull from the Output Buffer. Therefore, for write access, the data input buffer is written; for read access, the data output buffer is read. The data input buffer must be written before starting an operation. The data output buffer contains valid data on completion of an operation. Therefore, any 128-bit data block can be split over multiple 32-bit word transfers; these can be mixed with other host transfers over the external interface.
aes_data_in_out_3	Data Input/Output Registers The data registers are typically accessed via DMA and not with host writes and/or reads. However, for debugging purposes the Data Input/Output Registers can be accessed via host write and read operations. The registers are used to buffer the input/output data blocks to/from the EIP-120t. Note: The data input buffer (AES_DATA_IN_n) and data output buffer (AES_DATA_OUT_n) are mapped to the same address locations. Writes (both DMA and host) to these addresses load the Input Buffer while reads pull from the Output Buffer. Therefore, for write access, the data input buffer is written; for read access, the data output buffer is read. The data input buffer must be written before starting an operation. The data output buffer contains valid data on completion of an operation. Therefore, any 128-bit data block can be split over multiple 32-bit word transfers; these can be mixed with other host transfers over the external interface.
aes_iv_0	AES initialization vector registers These registers are used to provide and read the IV from the AES engine.
aes_iv_1	AES initialization vector registers These registers are used to provide and read the IV from the AES engine.
aes_iv_2	AES initialization vector registers These registers are used to provide and read the IV from the AES engine.
aes_iv_3	AES initialization vector registers These registers are used to provide and read the IV from the AES engine.
aes_key2_0	AES_KEY2_0 / AES_GHASH_H_IN_0 Second Key / GHASH Key (internal, but clearable) The following registers are not accessible through the host for reading and writing. They are used to store internally calculated key information and intermediate results. However, when the host performs a write to the any of the respective AES_KEY2_n or AES_KEY3_n addresses, respectively the whole 128-bit AES_KEY2_n or AES_KEY3_n register is cleared to 0s. The AES_GHASH_H_IN_n registers (required for GHASH, which is part of GCM) are mapped to the AES_KEY2_n registers. The (intermediate) authentication result for GCM and CCM is stored in the AES_KEY3_n register.
aes_key2_1	AES_KEY2_1 / AES_GHASH_H_IN_1 Second Key / GHASH Key (internal, but clearable) The following registers are not accessible through the host for reading and writing. They are used to store internally calculated key information and intermediate results. However, when the host performs a write to the any of the respective AES_KEY2_n or AES_KEY3_n addresses, respectively the whole 128-bit AES_KEY2_n or AES_KEY3_n register is cleared to 0s. The AES_GHASH_H_IN_n registers (required for GHASH, which is part of GCM) are mapped to the AES_KEY2_n registers. The (intermediate) authentication result for GCM and CCM is stored in the AES_KEY3_n register.
aes_key2_2	AES_KEY2_2 / AES_GHASH_H_IN_2 Second Key / GHASH Key (internal, but clearable) The following registers are not accessible through the host for reading and writing. They are used to store internally calculated key information and intermediate results. However, when the host performs a write to the any of the respective AES_KEY2_n or AES_KEY3_n addresses, respectively the whole 128-bit AES_KEY2_n or AES_KEY3_n register is cleared to 0s. The AES_GHASH_H_IN_n registers (required for GHASH, which is part of GCM) are mapped to the AES_KEY2_n registers. The (intermediate) authentication result for GCM and CCM is stored in the AES_KEY3_n register.
aes_key2_3	AES_KEY2_3 / AES_GHASH_H_IN_3 Second Key / GHASH Key (internal, but clearable) The following registers are not accessible through the host for reading and writing. They are used to store internally calculated key information and intermediate results. However, when the host performs a write to the any of the respective AES_KEY2_n or AES_KEY3_n addresses, respectively the whole 128-bit AES_KEY2_n or AES_KEY3_n register is cleared to 0s. The AES_GHASH_H_IN_n registers (required for GHASH, which is part of GCM) are mapped to the AES_KEY2_n registers. The (intermediate) authentication result for GCM and CCM is stored in the AES_KEY3_n register.
aes_key3_0	AES_KEY3_0 / AES_KEY2_4 Third Key / Second Key (internal, but clearable) The following registers are not accessible through the host for reading and writing. They are used to store internally calculated key information and intermediate results. However, when the host performs a write to the any of the respective AES_KEY2_n or AES_KEY3_n addresses, respectively the whole 128-bit AES_KEY2_n or AES_KEY3_n register is cleared to 0s. The AES_GHASH_H_IN_n registers (required for GHASH, which is part of GCM) are mapped to the AES_KEY2_n registers. The (intermediate) authentication result for GCM and CCM is stored in the AES_KEY3_n register.
aes_key3_1	AES_KEY3_1 / AES_KEY2_5 Third Key / Second Key (internal, but clearable) The following registers are not accessible through the host for reading and writing. They are used to store internally calculated key information and intermediate results. However, when the host performs a write to the any of the respective AES_KEY2_n or AES_KEY3_n addresses, respectively the whole 128-bit AES_KEY2_n or AES_KEY3_n register is cleared to 0s. The AES_GHASH_H_IN_n registers (required for GHASH, which is part of GCM) are mapped to the AES_KEY2_n registers. The (intermediate) authentication result for GCM and CCM is stored in the AES_KEY3_n register.
aes_key3_2	AES_KEY3_2 / AES_KEY2_6 Third Key / Second Key (internal, but clearable) The following registers are not accessible through the host for reading and writing. They are used to store internally calculated key information and intermediate results. However, when the host performs a write to the any of the respective AES_KEY2_n or AES_KEY3_n addresses, respectively the whole 128-bit AES_KEY2_n or AES_KEY3_n register is cleared to 0s. The AES_GHASH_H_IN_n registers (required for GHASH, which is part of GCM) are mapped to the AES_KEY2_n registers. The (intermediate) authentication result for GCM and CCM is stored in the AES_KEY3_n register.
aes_key3_3	AES_KEY3_3 / AES_KEY2_7 Third Key / Second Key (internal, but clearable) The following registers are not accessible through the host for reading and writing. They are used to store internally calculated key information and intermediate results. However, when the host performs a write to the any of the respective AES_KEY2_n or AES_KEY3_n addresses, respectively the whole 128-bit AES_KEY2_n or AES_KEY3_n register is cleared to 0s. The AES_GHASH_H_IN_n registers (required for GHASH, which is part of GCM) are mapped to the AES_KEY2_n registers. The (intermediate) authentication result for GCM and CCM is stored in the AES_KEY3_n register.
aes_tag_out_0	TAG registers The tag registers can be accessed via DMA or directly with host reads. These registers buffer the TAG from the EIP-120t. The registers are shared with the intermediate authentication result registers, but cannot be read until the processing is finished. While processing, a read from these registers returns 0s. If an operation does not return a TAG, reading from these registers returns an IV. If an operation returns a TAG plus an IV and both need to be read by the host, the host must first read the TAG followed by the IV. Reading these in reverse order will return the IV twice.
aes_tag_out_1	TAG registers The tag registers can be accessed via DMA or directly with host reads. These registers buffer the TAG from the EIP-120t. The registers are shared with the intermediate authentication result registers, but cannot be read until the processing is finished. While processing, a read from these registers returns 0s. If an operation does not return a TAG, reading from these registers returns an IV. If an operation returns a TAG plus an IV and both need to be read by the host, the host must first read the TAG followed by the IV. Reading these in reverse order returns the IV twice.
aes_tag_out_2	TAG registers The tag registers can be accessed via DMA or directly with host reads. These registers buffer the TAG from the EIP-120t. The registers are shared with the intermediate authentication result registers, but cannot be read until the processing is finished. While processing, a read from these registers returns 0s. If an operation does not return a TAG, reading from these registers returns an IV. If an operation returns a TAG plus an IV and both need to be read by the host, the host must first read the TAG followed by the IV. Reading these in reverse order returns the IV twice.
aes_tag_out_3	TAG registers The tag registers can be accessed via DMA or directly with host reads. These registers buffer the TAG from the EIP-120t. The registers are shared with the intermediate authentication result registers, but cannot be read until the processing is finished. While processing, a read from these registers returns 0s. If an operation does not return a TAG, reading from these registers returns an IV. If an operation returns a TAG plus an IV and both need to be read by the host, the host must first read the TAG followed by the IV. Reading these in reverse order returns the IV twice.
ctrl_alg_sel	Algorithm select This algorithm selection register configures the internal destination of the DMA controller.
ctrl_int_cfg	Interrupt configuration
ctrl_int_clr	Interrupt clear
ctrl_int_en	Interrupt enable
ctrl_int_set	Interrupt set
ctrl_int_stat	Interrupt status
ctrl_options	Options register
ctrl_prot_en	Master PROT privileged access enable This register enables the second bit (bit [1]) of the AHB HPROT bus of the AHB master interface when a read action of key(s) is performed on the AHB master interface for writing keys into the store module.
ctrl_sw_reset	Software reset
ctrl_version	Version register
dmac_ch0_ctrl	Channel control This register is used for channel enabling and priority selection. When a channel is disabled, it becomes inactive only when all ongoing requests are finished.
dmac_ch0_extaddr	Channel external address
dmac_ch0_dmalength	Channel DMA length
dmac_ch1_ctrl	Channel control This register is used for channel enabling and priority selection. When a channel is disabled, it becomes inactive only when all ongoing requests are finished.
dmac_ch1_extaddr	Channel external address
dmac_ch1_dmalength	Channel DMA length
dmac_mst_runparams	DMAC master run-time parameters This register defines all the run-time parameters for the AHB master interface port. These parameters are required for the proper functioning of the EIP-101m AHB master adapter.
dmac_options	DMAC options register These registers contain information regarding the different options configured in this DMAC.
dmac_persr	DMAC port error raw status register This register provides the actual status of individual port errors. It also indicates which channel is serviced by an external AHB port (which is frozen by a port error). A port error aborts operations on all serviced channels (channel enable bit is forced to 0) and prevents further transfers via that port until the error is cleared by writing to the DMAC_SWRES register.
dmac_status	DMAC status This register provides the actual state of each DMA channel. It also reports port errors in case these were received by the master interface module during the data transfer.
dmac_swres	DMAC software reset register Software reset is used to reset the DMAC to stop all transfers and clears the port error status register. After the software reset is performed, all the channels are disabled and no new requests are performed by the channels. The DMAC waits for the existing (active) requests to finish and accordingly sets the DMAC status registers.
dmac_version	DMAC version register This register contains an indication (or signature) of the EIP type of this DMAC, as well as the hardware version/patch numbers.
hash_data_in_0	HASH data input registers The data input registers should be used to provide input data to the hash module through the slave interface.
hash_data_in_1	HASH data input registers The data input registers should be used to provide input data to the hash module through the slave interface.
hash_data_in_2	HASH data input registers The data input registers should be used to provide input data to the hash module through the slave interface.
hash_data_in_3	HASH data input registers The data input registers should be used to provide input data to the hash module through the slave interface.
hash_data_in_4	HASH data input registers The data input registers should be used to provide input data to the hash module through the slave interface.
hash_data_in_5	HASH data input registers The data input registers should be used to provide input data to the hash module through the slave interface.
hash_data_in_6	HASH data input registers The data input registers should be used to provide input data to the hash module through the slave interface.
hash_data_in_7	HASH data input registers The data input registers should be used to provide input data to the hash module through the slave interface.
hash_data_in_8	HASH data input registers The data input registers should be used to provide input data to the hash module through the slave interface.
hash_data_in_9	HASH data input registers The data input registers should be used to provide input data to the hash module through the slave interface.
hash_data_in_10	HASH data input registers The data input registers should be used to provide input data to the hash module through the slave interface.
hash_data_in_11	HASH data input registers The data input registers should be used to provide input data to the hash module through the slave interface.
hash_data_in_12	HASH data input registers The data input registers should be used to provide input data to the hash module through the slave interface.
hash_data_in_13	HASH data input registers The data input registers should be used to provide input data to the hash module through the slave interface.
hash_data_in_14	HASH data input registers The data input registers should be used to provide input data to the hash module through the slave interface.
hash_data_in_15	HASH data input registers The data input registers should be used to provide input data to the hash module through the slave interface.
hash_digest_a	Hash digest registers The hash digest registers consist of eight 32-bit registers, named HASH_DIGEST_A to HASH_DIGEST_H. After processing a message, the output digest can be read from these registers. These registers can be written with an intermediate hash result for continued hash operations.
hash_digest_b	Hash digest registers The hash digest registers consist of eight 32-bit registers, named HASH_DIGEST_A to HASH_DIGEST_H. After processing a message, the output digest can be read from these registers. These registers can be written with an intermediate hash result for continued hash operations.
hash_digest_c	Hash digest registers The hash digest registers consist of eight 32-bit registers, named HASH_DIGEST_A to HASH_DIGEST_H. After processing a message, the output digest can be read from these registers. These registers can be written with an intermediate hash result for continued hash operations.
hash_digest_d	Hash digest registers The hash digest registers consist of eight 32-bit registers, named HASH_DIGEST_A to HASH_DIGEST_H. After processing a message, the output digest can be read from these registers. These registers can be written with an intermediate hash result for continued hash operations.
hash_digest_e	Hash digest registers The hash digest registers consist of eight 32-bit registers, named HASH_DIGEST_A to HASH_DIGEST_H. After processing a message, the output digest can be read from these registers. These registers can be written with an intermediate hash result for continued hash operations.
hash_digest_f	Hash digest registers The hash digest registers consist of eight 32-bit registers, named HASH_DIGEST_A to HASH_DIGEST_H. After processing a message, the output digest can be read from these registers. These registers can be written with an intermediate hash result for continued hash operations.
hash_digest_g	Hash digest registers The hash digest registers consist of eight 32-bit registers, named HASH_DIGEST_A to HASH_DIGEST_H. After processing a message, the output digest can be read from these registers. These registers can be written with an intermediate hash result for continued hash operations.
hash_digest_h	Hash digest registers The hash digest registers consist of eight 32-bit registers, named HASH_DIGEST_A to HASH_DIGEST_H. After processing a message, the output digest can be read from these registers. These registers can be written with an intermediate hash result for continued hash operations.
hash_io_buf_ctrl	Input/output buffer control and status register This register pair shares a single address location and contains bits that control and monitor the data flow between the host and the hash engine.
hash_length_in_h	Hash length register
hash_length_in_l	Hash length register
hash_mode_in	Hash mode register
key_store_read_area	Key store read area register This register selects the key store RAM area from where the key needs to be read that will be used for an AES operation. The operation directly starts after writing this register. When the operation is finished, the status of the key store read operation is available in the interrupt status register. Key store read error is asserted when a RAM area is selected which does not contain valid written key.
key_store_size	Key store size register This register defines the size of the keys that are written with DMA. This register should be configured before writing to the KEY_STORE_WRITE_AREA register.
key_store_write_area	Key store write area register This register defines where the keys should be written in the key store RAM. After writing this register, the key store module is ready to receive the keys through a DMA operation. In case the key data transfer triggered an error in the key store, the error will be available in the interrupt status register after the DMA is finished. The key store write-error is asserted when the programmed/selected area is not completely written. This error is also asserted when the DMA operation writes to ram areas that are not selected. The key store RAM is divided into 8 areas of 128 bits. 192-bit keys written in the key store RAM should start on boundaries of 256 bits. This means that writing a 192-bit key to the key store RAM must be done by writing 256 bits of data with the 64 most-significant bits set to 0. These bits are ignored by the AES engine.
key_store_written_area	Key store written area register This register shows which areas of the key store RAM contain valid written keys. When a new key needs to be written to the key store, on a location that is already occupied by a valid key, this key area must be cleared first. This can be done by writing this register before the new key is written to the key store memory. Attempting to write to a key area that already contains a valid key is not allowed and results in an error.

Structs

RegisterBlock

Register block

Type Definitions

AES_AUTH_LENGTH	Authentication length register
AES_CTRL	AES input/output buffer control and mode register This register specifies the AES mode of operation for the EIP-120t. Electronic codebook (ECB) mode is automatically selected if bits [28:5] of this register are all 0.
AES_C_LENGTH_0	AES crypto length registers (LSW) These registers are used to write the Length values to the EIP-120t. While processing, the length values decrement to 0. If both lengths are 0, the data stream is finished and a new context is requested. For basic AES modes (ECB, CBC, and CTR), a crypto length of 0 can be written if multiple streams need to be processed with the same key. Writing 0 length results in continued data requests until a new context is written. For the other modes (CBC-MAC, GCM, and CCM) no (new) data requests are done if the length decrements to or equals 0. It is advised to write a new length per packet. If the length registers decrement to 0, no new data is processed until a new context or length value is written. When writing a new mode without writing the length registers, the length register values from the previous context is reused.
AES_C_LENGTH_1	AES crypto length registers (MSW) These registers are used to write the Length values to the EIP-120t. While processing, the length values decrement to 0. If both lengths are 0, the data stream is finished and a new context is requested. For basic AES modes (ECB, CBC, and CTR), a crypto length of 0 can be written if multiple streams need to be processed with the same key. Writing 0 length results in continued data requests until a new context is written. For the other modes (CBC-MAC, GCM and CCM) no (new) data requests are done if the length decrements to or equals 0. It is advised to write a new length per packet. If the length registers decrement to 0, no new data is processed until a new context or length value is written. When writing a new mode without writing the length registers, the length register values from the previous context is reused.
AES_DATA_IN_OUT_0	Data input/output registers The data registers are typically accessed through the DMA and not with host writes and/or reads. However, for debugging purposes the data input/output registers can be accessed via host write and read operations. The registers are used to buffer the input/output data blocks to/from the EIP-120t. Note: The data input buffer (AES_DATA_IN_n) and data output buffer (AES_DATA_OUT_n) are mapped to the same address locations. Writes (both DMA and host) to these addresses load the Input Buffer while reads pull from the Output Buffer. Therefore, for write access, the data input buffer is written; for read access, the data output buffer is read. The data input buffer must be written before starting an operation. The data output buffer contains valid data on completion of an operation. Therefore, any 128-bit data block can be split over multiple 32-bit word transfers; these can be mixed with other host transfers over the external interface.
AES_DATA_IN_OUT_1	Data Input/Output Registers The data registers are typically accessed via DMA and not with host writes and/or reads. However, for debugging purposes the Data Input/Output Registers can be accessed via host write and read operations. The registers are used to buffer the input/output data blocks to/from the EIP-120t. Note: The data input buffer (AES_DATA_IN_n) and data output buffer (AES_DATA_OUT_n) are mapped to the same address locations. Writes (both DMA and host) to these addresses load the Input Buffer while reads pull from the Output Buffer. Therefore, for write access, the data input buffer is written; for read access, the data output buffer is read. The data input buffer must be written before starting an operation. The data output buffer contains valid data on completion of an operation. Therefore, any 128-bit data block can be split over multiple 32-bit word transfers; these can be mixed with other host transfers over the external interface.
AES_DATA_IN_OUT_2	Data Input/Output Registers The data registers are typically accessed via DMA and not with host writes and/or reads. However, for debugging purposes the Data Input/Output Registers can be accessed via host write and read operations. The registers are used to buffer the input/output data blocks to/from the EIP-120t. Note: The data input buffer (AES_DATA_IN_n) and data output buffer (AES_DATA_OUT_n) are mapped to the same address locations. Writes (both DMA and host) to these addresses load the Input Buffer while reads pull from the Output Buffer. Therefore, for write access, the data input buffer is written; for read access, the data output buffer is read. The data input buffer must be written before starting an operation. The data output buffer contains valid data on completion of an operation. Therefore, any 128-bit data block can be split over multiple 32-bit word transfers; these can be mixed with other host transfers over the external interface.
AES_DATA_IN_OUT_3	Data Input/Output Registers The data registers are typically accessed via DMA and not with host writes and/or reads. However, for debugging purposes the Data Input/Output Registers can be accessed via host write and read operations. The registers are used to buffer the input/output data blocks to/from the EIP-120t. Note: The data input buffer (AES_DATA_IN_n) and data output buffer (AES_DATA_OUT_n) are mapped to the same address locations. Writes (both DMA and host) to these addresses load the Input Buffer while reads pull from the Output Buffer. Therefore, for write access, the data input buffer is written; for read access, the data output buffer is read. The data input buffer must be written before starting an operation. The data output buffer contains valid data on completion of an operation. Therefore, any 128-bit data block can be split over multiple 32-bit word transfers; these can be mixed with other host transfers over the external interface.
AES_IV_0	AES initialization vector registers These registers are used to provide and read the IV from the AES engine.
AES_IV_1	AES initialization vector registers These registers are used to provide and read the IV from the AES engine.
AES_IV_2	AES initialization vector registers These registers are used to provide and read the IV from the AES engine.
AES_IV_3	AES initialization vector registers These registers are used to provide and read the IV from the AES engine.
AES_KEY2_0	AES_KEY2_0 / AES_GHASH_H_IN_0 Second Key / GHASH Key (internal, but clearable) The following registers are not accessible through the host for reading and writing. They are used to store internally calculated key information and intermediate results. However, when the host performs a write to the any of the respective AES_KEY2_n or AES_KEY3_n addresses, respectively the whole 128-bit AES_KEY2_n or AES_KEY3_n register is cleared to 0s. The AES_GHASH_H_IN_n registers (required for GHASH, which is part of GCM) are mapped to the AES_KEY2_n registers. The (intermediate) authentication result for GCM and CCM is stored in the AES_KEY3_n register.
AES_KEY2_1	AES_KEY2_1 / AES_GHASH_H_IN_1 Second Key / GHASH Key (internal, but clearable) The following registers are not accessible through the host for reading and writing. They are used to store internally calculated key information and intermediate results. However, when the host performs a write to the any of the respective AES_KEY2_n or AES_KEY3_n addresses, respectively the whole 128-bit AES_KEY2_n or AES_KEY3_n register is cleared to 0s. The AES_GHASH_H_IN_n registers (required for GHASH, which is part of GCM) are mapped to the AES_KEY2_n registers. The (intermediate) authentication result for GCM and CCM is stored in the AES_KEY3_n register.
AES_KEY2_2	AES_KEY2_2 / AES_GHASH_H_IN_2 Second Key / GHASH Key (internal, but clearable) The following registers are not accessible through the host for reading and writing. They are used to store internally calculated key information and intermediate results. However, when the host performs a write to the any of the respective AES_KEY2_n or AES_KEY3_n addresses, respectively the whole 128-bit AES_KEY2_n or AES_KEY3_n register is cleared to 0s. The AES_GHASH_H_IN_n registers (required for GHASH, which is part of GCM) are mapped to the AES_KEY2_n registers. The (intermediate) authentication result for GCM and CCM is stored in the AES_KEY3_n register.
AES_KEY2_3	AES_KEY2_3 / AES_GHASH_H_IN_3 Second Key / GHASH Key (internal, but clearable) The following registers are not accessible through the host for reading and writing. They are used to store internally calculated key information and intermediate results. However, when the host performs a write to the any of the respective AES_KEY2_n or AES_KEY3_n addresses, respectively the whole 128-bit AES_KEY2_n or AES_KEY3_n register is cleared to 0s. The AES_GHASH_H_IN_n registers (required for GHASH, which is part of GCM) are mapped to the AES_KEY2_n registers. The (intermediate) authentication result for GCM and CCM is stored in the AES_KEY3_n register.
AES_KEY3_0	AES_KEY3_0 / AES_KEY2_4 Third Key / Second Key (internal, but clearable) The following registers are not accessible through the host for reading and writing. They are used to store internally calculated key information and intermediate results. However, when the host performs a write to the any of the respective AES_KEY2_n or AES_KEY3_n addresses, respectively the whole 128-bit AES_KEY2_n or AES_KEY3_n register is cleared to 0s. The AES_GHASH_H_IN_n registers (required for GHASH, which is part of GCM) are mapped to the AES_KEY2_n registers. The (intermediate) authentication result for GCM and CCM is stored in the AES_KEY3_n register.
AES_KEY3_1	AES_KEY3_1 / AES_KEY2_5 Third Key / Second Key (internal, but clearable) The following registers are not accessible through the host for reading and writing. They are used to store internally calculated key information and intermediate results. However, when the host performs a write to the any of the respective AES_KEY2_n or AES_KEY3_n addresses, respectively the whole 128-bit AES_KEY2_n or AES_KEY3_n register is cleared to 0s. The AES_GHASH_H_IN_n registers (required for GHASH, which is part of GCM) are mapped to the AES_KEY2_n registers. The (intermediate) authentication result for GCM and CCM is stored in the AES_KEY3_n register.
AES_KEY3_2	AES_KEY3_2 / AES_KEY2_6 Third Key / Second Key (internal, but clearable) The following registers are not accessible through the host for reading and writing. They are used to store internally calculated key information and intermediate results. However, when the host performs a write to the any of the respective AES_KEY2_n or AES_KEY3_n addresses, respectively the whole 128-bit AES_KEY2_n or AES_KEY3_n register is cleared to 0s. The AES_GHASH_H_IN_n registers (required for GHASH, which is part of GCM) are mapped to the AES_KEY2_n registers. The (intermediate) authentication result for GCM and CCM is stored in the AES_KEY3_n register.
AES_KEY3_3	AES_KEY3_3 / AES_KEY2_7 Third Key / Second Key (internal, but clearable) The following registers are not accessible through the host for reading and writing. They are used to store internally calculated key information and intermediate results. However, when the host performs a write to the any of the respective AES_KEY2_n or AES_KEY3_n addresses, respectively the whole 128-bit AES_KEY2_n or AES_KEY3_n register is cleared to 0s. The AES_GHASH_H_IN_n registers (required for GHASH, which is part of GCM) are mapped to the AES_KEY2_n registers. The (intermediate) authentication result for GCM and CCM is stored in the AES_KEY3_n register.
AES_TAG_OUT_0	TAG registers The tag registers can be accessed via DMA or directly with host reads. These registers buffer the TAG from the EIP-120t. The registers are shared with the intermediate authentication result registers, but cannot be read until the processing is finished. While processing, a read from these registers returns 0s. If an operation does not return a TAG, reading from these registers returns an IV. If an operation returns a TAG plus an IV and both need to be read by the host, the host must first read the TAG followed by the IV. Reading these in reverse order will return the IV twice.
AES_TAG_OUT_1	TAG registers The tag registers can be accessed via DMA or directly with host reads. These registers buffer the TAG from the EIP-120t. The registers are shared with the intermediate authentication result registers, but cannot be read until the processing is finished. While processing, a read from these registers returns 0s. If an operation does not return a TAG, reading from these registers returns an IV. If an operation returns a TAG plus an IV and both need to be read by the host, the host must first read the TAG followed by the IV. Reading these in reverse order returns the IV twice.
AES_TAG_OUT_2	TAG registers The tag registers can be accessed via DMA or directly with host reads. These registers buffer the TAG from the EIP-120t. The registers are shared with the intermediate authentication result registers, but cannot be read until the processing is finished. While processing, a read from these registers returns 0s. If an operation does not return a TAG, reading from these registers returns an IV. If an operation returns a TAG plus an IV and both need to be read by the host, the host must first read the TAG followed by the IV. Reading these in reverse order returns the IV twice.
AES_TAG_OUT_3	TAG registers The tag registers can be accessed via DMA or directly with host reads. These registers buffer the TAG from the EIP-120t. The registers are shared with the intermediate authentication result registers, but cannot be read until the processing is finished. While processing, a read from these registers returns 0s. If an operation does not return a TAG, reading from these registers returns an IV. If an operation returns a TAG plus an IV and both need to be read by the host, the host must first read the TAG followed by the IV. Reading these in reverse order returns the IV twice.
CTRL_ALG_SEL	Algorithm select This algorithm selection register configures the internal destination of the DMA controller.
CTRL_INT_CFG	Interrupt configuration
CTRL_INT_CLR	Interrupt clear
CTRL_INT_EN	Interrupt enable
CTRL_INT_SET	Interrupt set
CTRL_INT_STAT	Interrupt status
CTRL_OPTIONS	Options register
CTRL_PROT_EN	Master PROT privileged access enable This register enables the second bit (bit [1]) of the AHB HPROT bus of the AHB master interface when a read action of key(s) is performed on the AHB master interface for writing keys into the store module.
CTRL_SW_RESET	Software reset
CTRL_VERSION	Version register
DMAC_CH0_CTRL	Channel control This register is used for channel enabling and priority selection. When a channel is disabled, it becomes inactive only when all ongoing requests are finished.
DMAC_CH0_EXTADDR	Channel external address
DMAC_CH0_DMALENGTH	Channel DMA length
DMAC_CH1_CTRL	Channel control This register is used for channel enabling and priority selection. When a channel is disabled, it becomes inactive only when all ongoing requests are finished.
DMAC_CH1_EXTADDR	Channel external address
DMAC_CH1_DMALENGTH	Channel DMA length
DMAC_MST_RUNPARAMS	DMAC master run-time parameters This register defines all the run-time parameters for the AHB master interface port. These parameters are required for the proper functioning of the EIP-101m AHB master adapter.
DMAC_OPTIONS	DMAC options register These registers contain information regarding the different options configured in this DMAC.
DMAC_PERSR	DMAC port error raw status register This register provides the actual status of individual port errors. It also indicates which channel is serviced by an external AHB port (which is frozen by a port error). A port error aborts operations on all serviced channels (channel enable bit is forced to 0) and prevents further transfers via that port until the error is cleared by writing to the DMAC_SWRES register.
DMAC_STATUS	DMAC status This register provides the actual state of each DMA channel. It also reports port errors in case these were received by the master interface module during the data transfer.
DMAC_SWRES	DMAC software reset register Software reset is used to reset the DMAC to stop all transfers and clears the port error status register. After the software reset is performed, all the channels are disabled and no new requests are performed by the channels. The DMAC waits for the existing (active) requests to finish and accordingly sets the DMAC status registers.
DMAC_VERSION	DMAC version register This register contains an indication (or signature) of the EIP type of this DMAC, as well as the hardware version/patch numbers.
HASH_DATA_IN_0	HASH data input registers The data input registers should be used to provide input data to the hash module through the slave interface.
HASH_DATA_IN_1	HASH data input registers The data input registers should be used to provide input data to the hash module through the slave interface.
HASH_DATA_IN_2	HASH data input registers The data input registers should be used to provide input data to the hash module through the slave interface.
HASH_DATA_IN_3	HASH data input registers The data input registers should be used to provide input data to the hash module through the slave interface.
HASH_DATA_IN_4	HASH data input registers The data input registers should be used to provide input data to the hash module through the slave interface.
HASH_DATA_IN_5	HASH data input registers The data input registers should be used to provide input data to the hash module through the slave interface.
HASH_DATA_IN_6	HASH data input registers The data input registers should be used to provide input data to the hash module through the slave interface.
HASH_DATA_IN_7	HASH data input registers The data input registers should be used to provide input data to the hash module through the slave interface.
HASH_DATA_IN_8	HASH data input registers The data input registers should be used to provide input data to the hash module through the slave interface.
HASH_DATA_IN_9	HASH data input registers The data input registers should be used to provide input data to the hash module through the slave interface.
HASH_DATA_IN_10	HASH data input registers The data input registers should be used to provide input data to the hash module through the slave interface.
HASH_DATA_IN_11	HASH data input registers The data input registers should be used to provide input data to the hash module through the slave interface.
HASH_DATA_IN_12	HASH data input registers The data input registers should be used to provide input data to the hash module through the slave interface.
HASH_DATA_IN_13	HASH data input registers The data input registers should be used to provide input data to the hash module through the slave interface.
HASH_DATA_IN_14	HASH data input registers The data input registers should be used to provide input data to the hash module through the slave interface.
HASH_DATA_IN_15	HASH data input registers The data input registers should be used to provide input data to the hash module through the slave interface.
HASH_DIGEST_A	Hash digest registers The hash digest registers consist of eight 32-bit registers, named HASH_DIGEST_A to HASH_DIGEST_H. After processing a message, the output digest can be read from these registers. These registers can be written with an intermediate hash result for continued hash operations.
HASH_DIGEST_B	Hash digest registers The hash digest registers consist of eight 32-bit registers, named HASH_DIGEST_A to HASH_DIGEST_H. After processing a message, the output digest can be read from these registers. These registers can be written with an intermediate hash result for continued hash operations.
HASH_DIGEST_C	Hash digest registers The hash digest registers consist of eight 32-bit registers, named HASH_DIGEST_A to HASH_DIGEST_H. After processing a message, the output digest can be read from these registers. These registers can be written with an intermediate hash result for continued hash operations.
HASH_DIGEST_D	Hash digest registers The hash digest registers consist of eight 32-bit registers, named HASH_DIGEST_A to HASH_DIGEST_H. After processing a message, the output digest can be read from these registers. These registers can be written with an intermediate hash result for continued hash operations.
HASH_DIGEST_E	Hash digest registers The hash digest registers consist of eight 32-bit registers, named HASH_DIGEST_A to HASH_DIGEST_H. After processing a message, the output digest can be read from these registers. These registers can be written with an intermediate hash result for continued hash operations.
HASH_DIGEST_F	Hash digest registers The hash digest registers consist of eight 32-bit registers, named HASH_DIGEST_A to HASH_DIGEST_H. After processing a message, the output digest can be read from these registers. These registers can be written with an intermediate hash result for continued hash operations.
HASH_DIGEST_G	Hash digest registers The hash digest registers consist of eight 32-bit registers, named HASH_DIGEST_A to HASH_DIGEST_H. After processing a message, the output digest can be read from these registers. These registers can be written with an intermediate hash result for continued hash operations.
HASH_DIGEST_H	Hash digest registers The hash digest registers consist of eight 32-bit registers, named HASH_DIGEST_A to HASH_DIGEST_H. After processing a message, the output digest can be read from these registers. These registers can be written with an intermediate hash result for continued hash operations.
HASH_IO_BUF_CTRL	Input/output buffer control and status register This register pair shares a single address location and contains bits that control and monitor the data flow between the host and the hash engine.
HASH_LENGTH_IN_H	Hash length register
HASH_LENGTH_IN_L	Hash length register
HASH_MODE_IN	Hash mode register
KEY_STORE_READ_AREA	Key store read area register This register selects the key store RAM area from where the key needs to be read that will be used for an AES operation. The operation directly starts after writing this register. When the operation is finished, the status of the key store read operation is available in the interrupt status register. Key store read error is asserted when a RAM area is selected which does not contain valid written key.
KEY_STORE_SIZE	Key store size register This register defines the size of the keys that are written with DMA. This register should be configured before writing to the KEY_STORE_WRITE_AREA register.
KEY_STORE_WRITE_AREA	Key store write area register This register defines where the keys should be written in the key store RAM. After writing this register, the key store module is ready to receive the keys through a DMA operation. In case the key data transfer triggered an error in the key store, the error will be available in the interrupt status register after the DMA is finished. The key store write-error is asserted when the programmed/selected area is not completely written. This error is also asserted when the DMA operation writes to ram areas that are not selected. The key store RAM is divided into 8 areas of 128 bits. 192-bit keys written in the key store RAM should start on boundaries of 256 bits. This means that writing a 192-bit key to the key store RAM must be done by writing 256 bits of data with the 64 most-significant bits set to 0. These bits are ignored by the AES engine.
KEY_STORE_WRITTEN_AREA	Key store written area register This register shows which areas of the key store RAM contain valid written keys. When a new key needs to be written to the key store, on a location that is already occupied by a valid key, this key area must be cleared first. This can be done by writing this register before the new key is written to the key store memory. Attempting to write to a key area that already contains a valid key is not allowed and results in an error.