ORDER=NO_REORDER, SEED=ALL_ZEROES, ASEEDEN=DISABLED, SINITEN=DISABLED, ASEEDSEL=LSB_READ, BMDEN=DISABLED, POLYSEL=CRC32_FIXED, CRCEN=DISABLED, BBREN=DISABLED
Module Control
| SINITEN | Seed Initialization Enable. 0 (DISABLED): Do not initialize the CRC module to the value set by the SEED bit. 1 (ENABLED): Initialize the CRC module to the value set by the SEED bit. |
| SEED | Seed Setting. 0 (ALL_ZEROES): CRC seed value is all 0’s (0x00000000) 1 (ALL_ONES): CRC seed value is all 1’s (0xFFFFFFFF). |
| CRCEN | CRC Enable. 0 (DISABLED): Disable CRC operations. 1 (ENABLED): Enable CRC operations. |
| POLYSEL | Polynomial Selection. 0 (CRC32_FIXED): Select the fixed 32-bit polynomial: 0x04C11DB7. 1 (CRC16_PROG): Select the programmable 16-bit polynomial. The POLY register sets the polynomial coefficients. |
| BMDEN | Byte Mode Enable. 0 (DISABLED): Disable byte mode (word/byte width is determined automatically by the hardware). 1 (ENABLED): Enable byte mode (all writes are considered as bytes). |
| BBREN | Byte-Level Bit Reversal Enable. 0 (DISABLED): No byte-level bit reversal (input is same order as written). 1 (ENABLED): Byte-level bit reversal enabled (the bits in each byte are reversed). |
| ORDER | Input Processing Order. 0 (NO_REORDER): No byte reorientation (output is same order as input). 1 (BIG_ENDIAN_16): Swap for 16-bit big endian order (input: B3 B2 B1 B0, output: B2 B3 B0 B1). 2 (BIG_ENDIAN_32): Swap for 32-bit big endian order (input: B3 B2 B1 B0, output: B0 B1 B2 B3). |
| ASEEDEN | Automatic Seed Enable. 0 (DISABLED): Disable automatic seeding. 1 (ENABLED): Enable automatic seeding. Reading the byte of the DATA register selected by ASEEDSEL re-seeds the CRC result with the setting selected by SEED. |
| ASEEDSEL | Automatic Seed Byte Select. 0 (LSB_READ): Select a read of the least-significant byte ([7:0]) of DATA, RDATA or BRDATA for automatic re-seeding. 1 (MSB_READ): Select a read of the most-significant byte [31:24] for 32-bit operations, and [15:8] for 16-bit operations) of DATA, RDATA or BRDATA for automatic re-seeding. |