716
18.2.7
Serial Control Register X (SCRX)
Bit
:
Initial value :
R/W
:
7
—
0
R/W
6
IICX1
0
R/W
5
IICX0
0
R/W
4
IICE
0
R/W
3
FLSHE
0
R/W
0
—
0
R/W
2
—
0
R/W
1
—
0
R/W
SCRX is an 8-bit readable/writable register that controls register access, the I
2
C interface
operating mode (when the on-chip IIC option is included), and on-chip flash memory control (F-
ZTAT versions). If a module controlled by SCRX is not used, do not write 1 to the corresponding
bit.
SCRX is initialized to H'00 by a reset and in hardware standby mode.
Bit 7—Reserved: Do not set 1.
Bit 6—I
2
C Transfer Select 1 (IICX1): This bit, together with bits CKS2 to CKS0 in ICMR of
IIC1, selects the transfer rate in master mode. For details, see section 18.2.4, I
2
C Bus Mode
Register (ICMR).
Bit 5—I
2
C Transfer Select 0 (IICX0): This bit, together with bits CKS2 to CKS0 in ICMR of
IIC0, selects the transfer rate in master mode. For details, see section 18.2.4, I
2
C Bus Mode
Register (ICMR).
Bit 4—I
2
C Master Enable (IICE): Controls CPU access to the I
2
C bus interface data and control
registers (ICCR, ICSR, ICDR/SARX, ICMR/SAR).
Bit 4
IICE
Description
0
CPU access to I
2
C bus interface data and control registers is disabled
(Initial value)
1
CPU access to I
2
C bus interface data and control registers is enabled
Bit 3—Flash Memory Control Register Enable (FLSHE): Controls the operation of the flash
memory in F-ZTAT versions. For details, see section 22, ROM.
Bits 2 to 0—Reserved: Do not set 1.
Содержание H8S/2631
Страница 28: ...xviii Appendix G Package Dimensions 1154 ...
Страница 341: ...316 Transfer SAR or DAR DAR or SAR Block area First block Nth block Figure 9 8 Memory Mapping in Block Transfer Mode ...
Страница 918: ...905 ø DREQ0 DREQ1 tDRQS tDRQH Figure 25 19 DMAC DREQ Input Timing ...
Страница 955: ...943 A 2 Instruction Codes Table A 2 shows the instruction codes ...