Module PACKET1

DCP work packet 1 status register

Modules

• CHAIN
  Reflects whether the next command pointer register must be loaded into the channel’s current descriptor pointer
• CHAIN_CONTIGUOUS
  Reflects whether the next packet’s address is located following this packet’s payload.
• CHECK_HASH
  Reflects whether the calculated hash value must be compared to the hash provided in the payload.
• CIPHER_ENCRYPT
  When the cipher block is enabled, this bit indicates whether the operation is encryption or decryption
• CIPHER_INIT
  Reflects whether the cipher block must load the initialization vector from the payload for this operation
• CONSTANT_FILL
  When this bit is set (MEMCOPY and BLIT modes only), the DCP simply fills the destination buffer with the value found in the source address field
• DECR_SEMAPHORE
  Reflects whether the channel’s semaphore must be decremented at the end of the current operation
• ENABLE_BLIT
  Reflects whether the DCP must perform a blit operation
• ENABLE_CIPHER
  Reflects whether the selected cipher function must be enabled for this operation.
• ENABLE_HASH
  Reflects whether the selected hashing function must be enabled for this operation.
• ENABLE_MEMCOPY
  Reflects whether the selected hashing function should be enabled for this operation.
• HASH_INIT
  Reflects whether the current hashing block is the initial block in the hashing operation, so the hash registers must be initialized before the operation
• HASH_OUTPUT
  When the hashing is enabled, this bit controls whether the input or output data is hashed.
• HASH_TERM
  Reflects whether the current hashing block is the final block in the hashing operation, so the hash padding must be applied by the hardware
• INPUT_BYTESWAP
  Reflects whether the DCP engine byteswaps the input data (big-endian data).
• INPUT_WORDSWAP
  Reflects whether the DCP engine wordswaps the input data (big-endian data).
• INTERRUPT
  Reflects whether the channel must issue an interrupt upon the completion of the packet.
• KEY_BYTESWAP
  Reflects whether the DCP engine swaps the key bytes (big-endian key).
• KEY_WORDSWAP
  Reflects whether the DCP engine swaps the key words (big-endian key).
• OTP_KEY
  Reflects whether a hardware-based key must be used
• OUTPUT_BYTESWAP
  Reflects whether the DCP engine byteswaps the output data (big-endian data).
• OUTPUT_WORDSWAP
  Reflects whether the DCP engine wordswaps the output data (big-endian data).
• PAYLOAD_KEY
  When set, it indicates the payload contains the key
• TAG
  Packet Tag
• TEST_SEMA_IRQ
  This bit is used to test the channel semaphore transition to 0. FOR TEST USE ONLY!