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SH33F2801P/032PR bảng dữ liệu(PDF) 82 Page - SINOWEALTH Electronic Ltd |
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SH33F2801P/032PR bảng dữ liệu(HTML) 82 Page - SINOWEALTH Electronic Ltd |
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82 / 407 page  SH33F2801 82 12.4 CRC Register CRC Module Register List (Base Address: 0x4004 1800) Address Register Name Description 0x4004 1800 DR CRC data register 0x4004 1804 CR CRC control register 0x4004 1808 INIT CRC initial value register 12.4.1 CRC data register (CRC_DR) Offset Address: 0x0000 Reset Value: 0xFFFF FFFF b31 b30 b29 b28 b27 b26 b25 b24 b23 b22 b21 b20 b19 b18 b17 b16 DR[31:0] RW 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 b15 b14 b13 b12 b11 b10 b9 b8 b7 b6 b5 b4 b3 b2 b1 b0 DR[31:0] RW 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 Bit Symbol Description 31 ~ 0 DR[31:0] 1. Used as an input register when writing new data to the CRC calculator. 2. Holds the previous CRC calculation result when it is read 3. 8-bit, 16-bit, and 32-bit written operations are allowed 12.4.2 CRC Control Register (CRC_CR) Offset Address: 0x0004 Reset Value: 0x0000 0000 b31 b30 b29 b28 b27 b26 b25 b24 b23 b22 b21 b20 b19 b18 b17 b16 Reserved - 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 b15 b14 b13 b12 b11 b10 b9 b8 b7 b6 b5 b4 b3 b2 b1 b0 RBYTE R RBITR COMP LR RBYTE W RBITW COMP LW MODE[1:0] Reserved RELO AD RW RW RW RW RW RW RW - WO 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Bit Symbol Description 31 ~ 16 Reserved - 15 RBYTER Reverses the byte order of the data in DR and then read. 0: Remains unchanged 1: Reverses byte order (refer to Table 12-1 for detailed conversion) 14 RBITR Reverses the byte inner bit order of the data in DR and then read. 0: Remains unchanged 1: Reverses byte inner bit order (refer to Table 12-1 for detailed conversion) 13 COMPLR Does a 1's complement transformation to the data in DR and then read. (i.e. do bitwise inversion to the read data) 0: Remains unchanged 1: Does a 1's complement transformation 12 RBYTEW Reverses the byte order of the written data 0: Remains unchanged 1: Reverses byte order (refer to Table 12-1 for detailed conversion) |
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