h8s-2138 Renesas Electronics Corporation., h8s-2138 Datasheet - Page 974

• Manufacturer Part Number: h8s-2138
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2100 Series
• Manufacturer: Renesas Electronics Corporation.

Appendix B Internal I/O Registers
SARX1—Second Slave Address Register 1
SAR1—Slave Address Register 1
SARX0—Second Slave Address Register 0
SAR0—Slave Address Register 0
Rev. 4.00 Jun 06, 2006 page 920 of 1004
REJ09B0301-0400
SAR
Bit
Initial value
Read/Write
SARX
Bit
Initial value
Read/Write
Format select
Note: *
DDCSWR
Bit 6
SW
SVAX6
0
1
SVA6
R/W
R/W
Do not set this mode when automatic switching to the I
performed by means of the DDCSWR setting.
7
0
7
0
SAR
Bit 0
SVAX5
FS
SVA5
0
1
0
1
R/W
R/W
6
0
6
0
SVAX4
SARX
SVA4
Bit 0
FSX
R/W
R/W
0
1
0
1
0
1
0
1
Second slave address
5
0
5
0
Slave address
I
• SAR and SARX slave addresses recognized
I
• SAR slave address recognized
• SARX slave address ignored
I
• SAR slave address ignored
• SARX slave address recognized
Synchronous serial format
• SAR and SARX slave addresses ignored
Formatless mode (start/stop conditions not
detected)
• Acknowledge bit used
Formatless mode *
(start/stop conditions not detected)
• No acknowledge bit
SVAX3
2
2
2
SVA3
C bus format
C bus format
C bus format
R/W
R/W
4
0
4
0
SVAX2
H'FF8E
H'FF8F
H'FFDE
H'FFDF
SVA2
R/W
R/W
Operating Mode
3
0
3
0
SVAX1
SVA1
2
R/W
R/W
C bus format is
2
0
2
0
SVAX0
SVA0
R/W
R/W
1
0
1
0
Format select
R/W
FSX
R/W
FS
0
0
0
1
IIC1
IIC0
IIC0
IIC1