C8051F996-GUR Silicon Labs, C8051F996-GUR Datasheet - Page 173

• Manufacturer Part Number: C8051F996-GUR
• Description: 8-bit Microcontrollers - MCU 8kB ADC 14-CH CDC
• Manufacturer: Silicon Labs

Specifications of C8051F996-GUR

• Rohs: yes
• Core: 8051
• Processor Series: C8051
• Data Bus Width: 8 bit

SFR Definition 16.1. CRC0CN: CRC0 Control
SFR Page = All; SFR Address = 0x84
Note: Upon initiation of an automatic CRC calculation, the three cycles following a write to CRC0CN that initiate a
Name
Reset
Bit
7:4
Type
3
2
1
0
Bit
CRC operation must only contain instructions which execute in the same number of cycles as the number of
bytes in the instruction. An example of such an instruction is a 3-byte MOV that targets the CRC0FLIP
register. When programming in C, the dummy value written to CRC0FLIP should be a non-zero value to
prevent the compiler from generating a 2-byte MOV instruction.
CRC0PNT
CRC0INIT
CRC0VAL
Unused
Unused
Name
R
7
0
Read = 0001b; Write = Don’t Care.
CRC0 Result Initialization Bit.
Writing a 1 to this bit initializes the entire CRC result based on CRC0VAL.
CRC0 Set Value Initialization Bit.
This bit selects the set value of the CRC result.
0: CRC result is set to 0x00000000 on write of 1 to CRC0INIT.
1: CRC result is set to 0xFFFFFFFF on write of 1 to CRC0INIT.
Read = 0b; Write = Don’t Care.
CRC0 Result Pointer.
Specifies the byte of the CRC result to be read/written on the next access to
CRC0DAT. The value of these bits will auto-increment upon each read or write.
0: CRC0DAT accesses bits 7–0 of the 16-bit CRC result.
1: CRC0DAT accesses bits 15–8 of the 16-bit CRC result.
R
6
0
R
5
0
Rev. 1.1
R
4
1
C8051F99x-C8051F98x
CRC0INIT CRC0VAL
Function
R/W
3
0
R/W
2
0
R
1
0
CRC0PNT
R/W
0
0
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