SH7059 Datasheet, PDF (551/1042 Pages) Renesas Technology Corp – 32-Bit RISC Microcomputer

17. Controller Area Network-II (HCAN-II)
Bit
15 to 0
Bit Name Initial Value R/W Description
UMSR1[15:0] 0
R/WC1 Indicate that an unread message has been overwritten or overrun for
mailboxes 31 to 16.
0: Clearing condition: Writing 1
1: Unread message is overwritten by a new message or overrun
Setting Condition: When a new message is received before RXPR/RFPR
is cleared.
• UMSR0n (n = 0, 1)
Bit: 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
UMSR0[15:0]
Initial Value: 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
R/W: R/ R/ R/ R/ R/ R/ R/ R/ R/ R/ R/ R/ R/ R/ R/ R/
WC1 WC1 WC1 WC1 WC1 WC1 WC1 WC1 WC1 WC1 WC1 WC1 WC1 WC1 WC1 WC1
Bit
15 to 0
Bit Name Initial Value R/W Description
UMSR0[15:0] 0
R/WC1 Indicate that an unread message has been overwritten or overrun for
mailboxes 15 to 0.
0: Clearing condition: Writing 1
1: Unread message is overwritten by a new message
Setting Condition: When a new message is received before RXPR/RFPR
is cleared.
Rev.3.00 Mar. 12, 2008 Page 461 of 948
REJ09B0177-0300