upd70f3402 Renesas Electronics Corporation., upd70f3402 Datasheet - Page 441

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

13.5 Transfer Data Length Change Function
The transfer data length of CSIB can be changed from 8 to 16 bits in 1-bit units by using the CBnCL3 to
CBnCL0 bits of the CBnCTL2 register.
If a transfer data length of other than 16 bits is specified, set data in the CBnTX or CBnRX register, jus-
tifying to the least significant bit, regardless of whether the first transfer bit is the MSB or LSB. Any data
can be set to the higher bits that are not used, but the receive data is 0 after serial transfer.
15
15
Insert 0
12
SIBn
(a) When transfer bit length = 10 bits, MSB first
(b) When transfer bit length = 12 bits, LSB first
Figure 13-8: Changing Transfer Data Length
Chapter 13 3-Wire Serial Interface (CSIB)
SOBn
User’s Manual U16702EE3V2UD00
10
11
Insert 0
9
0
0
SIBn
SOBn
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