Renesas SH7262 R5S72620 User Manual

Page of 2152
 
Section 26   USB 2.0 Host/Function Module 
R01UH0134EJ0400  Rev. 4.00  
 
Page 1421 of 2108 
Sep 24, 2014 
 
 
 
SH7262 Group, SH7264 Group 
Bit Bit 
Name 
Initial 
Value R/W  Description 
11 SUREQCLR 
0  R/W*
1
 
SUREQ Bit Clear 
When the host controller function is selected, 
setting this bit to 1 clears the SUREQ bit to 0. 
0: Invalid 
1: Clears the SUREQ bit to 0. 
This bit always indicates 0. 
Set this bit to 1 when communication has stopped 
with SUREQ being 1 during the setup transaction. 
However, for normal setup transactions, this 
module automatically clears the SUREQ bit to 0 
upon completion of the transaction; therefore, 
clearing the SUREQ bit is not necessary. 
Controlling the SUREQ bit through this bit must be 
done while UACT is 0 and thus communication is 
halted or while no transfer is being performed with 
bus disconnection detected. 
When the function controller function is selected, be 
sure to write 0 to this bit. 
10, 9 
 All 
Reserved 
These bits are always read as 0. The write value 
should always be 0.