r5f21368sdfp Renesas Electronics Corporation., r5f21368sdfp Datasheet - Page 693

• Manufacturer Part Number: r5f21368sdfp
• Description: Renesas Mcu R8c Family / R8c/3xt-a Series
• Manufacturer: Renesas Electronics Corporation.

Under development
R8C/36T-A Group
R01UH0240EJ0001 Rev.0.01
Apr 28, 2011
27.2.3
27.2.4
b15 to b0 Store CRC calculation results.
b7 to b0
After Reset
After Reset
After Reset
Bit
Bit
Address 00294h
Address 00296h
The CRC calculation results are stored in the CRCD register.
When the CRCPS bit in the CRCMR register is 0 (CRC-CCITT mode), the result calculated with CRC-CCITT
is read.
When the CRCPS bit is 1 (CRC-16 mode), the result calculated with CRC-16 is read.
When the CRCMS bit in the CRCMR register is 0, the initial value is written with the bit order reversed. When
data is then written to the CRCIN register, the bit-order-reversed CRC code is read from the CRCD register.
When the CRCMS bit is 1, the initial value is written without reversing the bit order.
When data is then written to the CRCIN register, the CRC code read from the CRCD register is not bit-order-
reversed.
The data for CRC calculation is input to the CRCIN register.
When writing to the CRCIN register from the CPU, set both the CRCSW and CRCSR bits in the CRCMR
register to 0.
When the CRCMS bit in the CRCMR register is 0, writes to the CRCIN register are performed with the bit
order reversed.
When the CRCMS bit is 1, writes to the CRCIN register do not reverse the bit order.
Symbol
Symbol
Symbol
Bit
Bit
Bit
CRC Data Register (CRCD)
CRC Input Register (CRCIN)
Set data for CRC calculation.
Preliminary document
Specifications in this document are tentative and subject to change.
b15
b7
b7
0
0
0
b14
b6
b6
0
0
0
b13
b5
b5
0
0
0
b12
b4
b4
0
0
0
Function
Function
b11
b3
b3
0
0
0
b10
b2
b2
0
0
0
b1
b9
b1
0
0
0
27. CRC Calculator Function
b0
b8
b0
0
0
0
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