upd70f3402 Renesas Electronics Corporation., upd70f3402 Datasheet - Page 662

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

Cautions: 1. Before a message buffer is initialized, the RDY bit must be cleared.
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2. Make the following settings for message buffers not used by the application.
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Clear the RDY, TRQ, and DN bits of the CnMCTRLm register to 0.
Clear the MA0 bit of the CnMCONFm register to 0.
Figure 16-59: Message Buffer Initialization
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Chapter 16 FCAN Controller
User’s Manual U16702EE3V2UD00
CnMCONFm register
CnMDATAm register.
CnMCTRLm register.
CnMDLCm register
CnMIDHm register
CnMIDLm register
Transmit message
Clear RDY bit = 1
Set RDY bit = 0
Clear RDY bit = 0
Set RDY bit = 1
Clear RDY bit.
Yes
Set RDY bit.
RDY = 0?
RDY = 1?
buffer?
START
Clear
Set
Set
END
Set
Set
Yes
Yes
No
No