upd70f3402 Renesas Electronics Corporation., upd70f3402 Datasheet - Page 793

• Manufacturer Part Number: upd70f3402
• Description: 32-/16-bit Single-chip Microcontroller With Can Interface
• Manufacturer: Renesas Electronics Corporation.

26.1 Functions
26.2 Configuration
The CRC function includes the following hardware.
• CRC operation circuit for detection of data block errors
• Generation of 16-bit CRC code using a CRC-CCITT (X
• CRC code is set to the CRC data register each time 1-byte data is transferred to the CRCIN
blocks of data of any length in 8-bit units
register, after the initial value is set to the CRCD register.
Control registers
Item
Figure 26-1: Block Diagram of CRC Register
CRC input register (CRCIN) (8 bits)
Chapter 26 CRC Function
Table 26-1: CRC Configuration
CRC data register (CRCD) (16 bits)
CRC input register (CRCIN)
CRC data register (CRCD)
CRC code generator
Internal bus
Internal bus
Configuration
16
+ X
12
+ X
5
+ 1) generation polynomial for