upd70f3402 Renesas Electronics Corporation., upd70f3402 Datasheet - Page 669

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

Caution:
The TRQ bit should be set after the RDY bit is set.
The RDY bit and TRQ bit should not be set at the same time.
Set CnMDATAxm register
Set CnMDLCm register
Clear RTR bit of CnMCONFm
register.
Set CnMIDLm and CnMIDHm
registers
t
Figure 16-66: Transmission via Software Polling
Data frame
User’s Manual U16702EE3V2UD00
No
Chapter 16 FCAN Controller
CnTGPT .CLEAR_TOVF bit = 1
CnMCTRLm.CLEAR_RDY = 1
CnMCTRLm.CLEAR_RDY = 0
CnMCTRLm.CLEAR_TRQ = 0
CnINTS .CLEAR_CINTS0 = 1
CnMCTRLm.SET_RDY = 0
CnMCTRLm.SET_RDY = 1
CnMCTRLm.SET_TRQ = 1
Read CnTGPT register
Clear CINTS0 bit
Clear TOVF bit
Data frame or
remote frame?
Clear RDY bit
Yes
CINTS0 = 1?
Set TRQ bit
Set RDY bit
THPM = 1?
TOVF = 1?
RDY = 0?
START
END
.
0
Yes
Yes
Yes
it
Set CnMDLCm register
Set RTR bit of CnMCONFm
Set CnMIDLm and CnMIDHm
registers
r
n
Remote frame
No
No
No
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