dspic33fj128mc204 Microchip Technology Inc., dspic33fj128mc204 Datasheet - Page 309
dspic33fj128mc204
Manufacturer Part Number
dspic33fj128mc204
Description
High-performance, 16-bit Digital Signal Controllers
Manufacturer
Microchip Technology Inc.
Datasheet
1.DSPIC33FJ128MC204.pdf
(412 pages)
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26.4
The CRC module provides the following registers:
• CRC Control Register
• CRC XOR Polynomial Register
REGISTER 26-1:
© 2009 Microchip Technology Inc.
bit 15
bit 7
Legend:
R = Readable bit
-n = Value at POR
bit 15-14
bit 13
bit 12-8
bit 7
bit 6
bit 5
bit 4
bit 3-0
CRCFUL
U-0
R-0
—
Registers
Unimplemented: Read as ‘0’
CSIDL: CRC Stop in Idle Mode bit
1 = Discontinue module operation when device enters Idle mode
0 = Continue module operation in Idle mode
VWORD<4:0>: Pointer Value bits
Indicates the number of valid words in the FIFO. Has a maximum value of 8 when PLEN<3:0> > 7,
or 16 when PLEN<3:0>
CRCFUL: FIFO Full bit
1 = FIFO is full
0 = FIFO is not full
CRCMPT: FIFO Empty Bit
1 = FIFO is empty
0 = FIFO is not empty
Unimplemented: Read as ‘0’
CRCGO: Start CRC bit
1 = Start CRC serial shifter
0 = Turn off the CRC serial shifter after the FIFO is empty
PLEN<3:0>: Polynomial Length bits
Denotes the length of the polynomial to be generated minus 1.
CRCMPT
U-0
R-1
—
CRCCON: CRC CONTROL REGISTER
‘1’ = Bit is set
W = Writable bit
CSIDL
R/W-0
U-0
—
≤
7.
CRCGO
R/W-0
R-0
Preliminary
U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared
R/W-0
R-0
VWORD<4:0>
R/W-0
R-0
PLEN<3:0>
x = Bit is unknown
R/W-0
R-0
DS70291C-page 307
R/W-0
R-0
bit 8
bit 0
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