PIC16LF18854 Datasheet, PDF (191/668 Pages) Microchip Technology – C Compiler Optimized RISC Architecture

PIC16(L)F18856/76
11.11 Register Definitions: CRC and Scanner Control
REGISTER 11-1: CRCCON0: CRC CONTROL REGISTER 0
R/W-0/0
R/W-0/0
R-0
R/W-0/0
U-0
EN
CRCGO
BUSY
ACCM
—
bit 7
U-0
R/W-0/0
R-0
—
SHIFTM
FULL
bit 0
Legend:
R = Readable bit
u = Bit is unchanged
‘1’ = Bit is set
W = Writable bit
x = Bit is unknown
‘0’ = Bit is cleared
U = Unimplemented bit, read as ‘0’
-n/n = Value at POR and BOR/Value at all other Resets
bit 7
bit 6
bit 5
bit 4
bit 3-2
bit 1
bit 0
EN: CRC Enable bit
1 = CRC module is released from Reset
0 = CRC is disabled and consumes no operating current
CRCGO: CRC Start bit
1 = Start CRC serial shifter
0 = CRC serial shifter turned off
BUSY: CRC Busy bit
1 = Shifting in progress or pending
0 = All valid bits in shifter have been shifted into accumulator and EMPTY = 1
ACCM: Accumulator Mode bit
1 = Data is augmented with zeros
0 = Data is not augmented with zeros
Unimplemented: Read as ‘0’
SHIFTM: Shift Mode bit
1 = Shift right (LSb)
0 = Shift left (MSb)
FULL: Data Path Full Indicator bit
1 = CRCDATH/L registers are full
0 = CRCDATH/L registers have shifted their data into the shifter
REGISTER 11-2: CRCCON1: CRC CONTROL REGISTER 1
R/W-0/0
bit 7
R/W-0/0
R/W-0/0
DLEN<3:0>
R/W-0/0
R/W-0/0
R/W-0/0
R/W-0/0
PLEN<3:0>
R/W-0/0
bit 0
Legend:
R = Readable bit
u = Bit is unchanged
‘1’ = Bit is set
W = Writable bit
x = Bit is unknown
‘0’ = Bit is cleared
U = Unimplemented bit, read as ‘0’
-n/n = Value at POR and BOR/Value at all other Resets
bit 7-4
bit 3-0
DLEN<3:0>: Data Length bits
Denotes the length of the data word -1 (See Example 11-1)
PLEN<3:0>: Polynomial Length bits
Denotes the length of the polynomial -1 (See Example 11-1)
 2016 Microchip Technology Inc.
Preliminary
DS40001824A-page 191