Fujitsu FR81S User Manual
CHAPTER 38: CRC
4. Registers
FUJITSU SEMICONDUCTOR LIMITED
CHAPTER
: CRC
FUJITSU SEMICONDUCTOR CONFIDENTIAL
10
4.4. CRC Register : CRCR (CRC Register)
The bit configuration of the CRC register is shown below.
This register outputs the result for the CRC calculation.
CRCR : Address 113C
H
(Access: Byte, Half-word, Word)
bit31
bit30
• • •
bit2
bit1
bit0
D[31:0]
Initial value
1
1
• • •
1
1
1
Attribute R,WX
R,WX
• • •
R,WX
R,WX
R,WX
[bit31 to bit0] D (Data) : CRC bits
These bits output the result for the CRC calculation. When software writes "1" to the initialization bit
(CRCCR: INIT), the value of the initial value register (CRCINIT) is loaded to this register. When software
writes the input data for the CRC calculation to the Input Data register (CRCIN), hardware immediately sets
the CRC calculation result to this register. When all input data has been written, this register holds the final
CRC code. When CRC16 is used, the result is output in D15 to D0 for big-endian (CRCLTE=0) byte order
and in D31 to D16 for little-endian (CRCLTE=1) byte order.
MB91520 Series
MN705-00010-1v0-E
1279