SH7080 Datasheet, PDF (967/1644 Pages) Renesas Technology Corp – 32-Bit RISC Microcomputer SuperH™ RISC engine Family

Section 18 I²C Bus Interface 2 (I²C2)
Initial
Bit
Bit Name Value R/W Description
5
SDAO
1
R/W SDA Output Value Control
This bit is used with SDAOP when modifying output
level of SDA. This bit should not be manipulated during
transfer.
0: When reading, SDA pin outputs low.
When writing, SDA pin is changed to output low.
1: When reading, SDA pin outputs high.
When writing, SDA pin is changed to output Hi-Z
(outputs high by external pull-up resistance).
4
SDAOP
1
R/W SDAO Write Protect
This bit controls change of output level of the SDA pin
by modifying the SDAO bit. To change the output level,
clear SDAO and SDAOP to 0 or set SDAO to 1 and
clear SDAOP to 0. This bit is always read as 1.
3
SCLO
1
R This bit monitors SCL output level. When SCLO is 1,
SCL pin outputs high. When SCLO is 0, SCL pin
outputs low.
2

1
R Reserved
This bit is always read as 1. The write value should
always be 1.
1
IICRST
0
R/W IIC Control Part Reset
This bit resets the control part except for I²C registers. If
this bit is set to 1 when hang-up occurs because of
communication failure during I²C operation, some of I²C
registers and control part can be reset.
0

1
R Reserved
This bit is always read as 1. The write value should
always be 1.
Rev. 3.00 May 17, 2007 Page 909 of 1582
REJ09B0181-0300