NEC UPD703116 User Manual page 573

(b) Write
Bit position Bit name
15 CIDE
13 CTRQ
12 CMSK
11 CDN
8 SMNO
4 to 0 STRT4 to
STRT0
CHAPTER 11 FCAN CONTROLLER
Checks message identifier (ID) format flag.
0: Message identifier format flag not checked
1: Only message with standard format identifier checked
Checks transmit request and message ready flag.
0: Transmit request and message ready flag not checked
1: Transmit request and message ready flag checked
Checks masked messages.
0: Masked messages not checked
1: Only masked messages checked
Checks status of the DN flag of M_STATn register (n = 00 to 31).
0: Status of the DN flag of M_STATn register not checked
1: Status of the DN flag of M_STATn register checked
Sets search module.
0: No search module setting
1: CAN module set as search target
Indicates message search start position.
0 to 31: Message search start position (message number)
Search starts from the message number defined by bits STRT4 to STRT0. Search
continues until it reaches the message buffer having the highest number among the
usable message buffers. If the search results include several message buffer numbers
among the matching messages, the message buffer with the lowest message buffer
number is selected. To fetch the next message buffer number without changing the
search criteria, "(MFND4 to MFND0) + 1" must be set as the values of bits STRT4 to
STRT0.
User's Manual U14492EJ5V0UD
Function
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573