SH7670 Datasheet, PDF (1095/1292 Pages) Renesas Technology Corp – 32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7670 Series

Section 25 User Break Controller (UBC)
25.2.4 Break Data Mask Register (BDMR)
BDMR is a 32-bit readable/writable register. BDMR specifies bits masked in the break data bits
specified by BDR. BDMR is initialized to H'00000000 by a power-on reset, but retains its
previous value by a manual reset or in software standby mode or sleep mode.
Bit: 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
BDM31 BDM30 BDM29 BDM28 BDM27 BDM26 BDM25 BDM24 BDM23 BDM22 BDM21 BDM20 BDM19 BDM18 BDM17 BDM16
Initial value: 0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
R/W: R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W
Bit: 15 14 13 12 11 10 9
8
7
6
5
4
3
2
1
0
BDM15 BDM14 BDM13 BDM12 BDM11 BDM10 BDM9 BDM8 BDM7 BDM6 BDM5 BDM4 BDM3 BDM2 BDM1 BDM0
Initial value: 0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
R/W: R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W
Initial
Bit
Bit Name Value R/W Description
31 to 0 BDM31 to All 0
BDM0
R/W Break Data Mask
Specify bits masked in the break data bits specified by
BDR (BD31 to BD0).
0: Break data bit BDn is included in the break condition
1: Break data bit BDn is masked and not included in
the break condition
Note: n = 31 to 0
Notes: 1. Set the operand size when specifying a value on a data bus as the break condition.
2. When the byte size is selected as a break condition, the same byte data must be set in
bits 31 to 24, 23 to 16, 15 to 8, and 7 to 0 in BDMR as the break mask data. Similarly,
when the word size is selected, the same word data must be set in bits 31 to 16 and 15
to 0.
Rev. 1.00 Nov. 14, 2007 Page 1069 of 1262
REJ09B0437-0100