upd70f3422gj-gae-qs-ax Renesas Electronics Corporation., upd70f3422gj-gae-qs-ax Datasheet - Page 704

• Manufacturer Part Number: upd70f3422gj-gae-qs-ax
• Description: 32-bit Single-chip Microcontroller
• Manufacturer: Renesas Electronics Corporation.

Chapter 19
704
After reset: 0000xxxxB
Type of transmit frame
Data frame
Remote frame
MDLC3
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
CnMDLCm
MDLC2
Caution
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
Note
(20)
MDLC1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
7
0
CnMDLCm - CANn message data length register m
The CnMDLCm register is used to set the number of bytes of the data field of a
message buffer.
The data and DLC value actually transmitted to CAN bus are as follows.
1.
2.
Preliminary User’s Manual U17566EE1V2UM00
R/W
Be sure to set bits 7 to 4 to 0000B.
Receive data is stored in as many CnMDATAxm register as the number of
bytes (however, the upper limit is 8) corresponding to DLC. The
CnMDATAxm register in which no data is stored is undefined.
MDLC0
Address: refer to “CAN registers overview“ on page 668
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
6
0
Length of transmit data
Number of bytes specified by DLC
(However, 8 bytes if DLC ≥ 8)
0 bytes
Data length of transmit/receive message
0 bytes
1 byte
2 bytes
3 bytes
4 bytes
5 bytes
6 bytes
7 bytes
8 bytes
Setting prohibited
(If these bits are set during transmission, 8-byte data is transmitted
regardless of the set DLC value when a data frame is transmitted.
However, the DLC actually transmitted to the CAN bus is the DLC
value set to this register.)
5
0
4
0
Note
MDLC3
3
DLC transmitted
MDLC3 to MDLC0 bits
MDLC2
2
CAN Controller (CAN)
MDLC1
1
MDLC0
0