Renesas R5S72625 Manual Do Utilizador

 

Section 17   I

2

C Bus Interface 3 

R01UH0134EJ0400  Rev. 4.00  

 

Page 857 of 2108 

Sep 24, 2014 

 

 

 
SH7262 Group, SH7264 Group 

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.