Filter
Top Products
Section 17 I
2
C Bus Interface 3
R01UH0134EJ0400 Rev. 4.00 Page 857 of 2108
Sep 24, 2014
SH7262 Group, SH7264 Group
Bit Bit Name
Initial
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
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 SCL Output Level
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 Control Part Reset
Resets bits BC[2:0] in ICMR and internal circuits. If this
bit is set to 1 when hang-up occurs because of
communication failure during I
2
C bus operation, bits
BC[2:0] in ICMR and internal circuits can be reset.
0 1 R Reserved
This bit is always read as 1. The write value should
always be 1.