Renesas R5S72644 Manual De Usuario

 

Section 26   USB 2.0 Host/Function Module 

R01UH0134EJ0400  Rev. 4.00  

 

Page 1351 of 2108 

Sep 24, 2014 

 

 

 
SH7262 Group, SH7264 Group 

7 

HSE 

0 

R/W 

High-Speed Operation Enable 

0:  High-speed operation is disabled 

When the function controller function is selected: 
Only full-speed operation is enabled. 

When the host controller function is selected: Full-
speed or low-speed operation is enabled. 

1:  High-speed operation is enabled (detected by this 

module) 

(1) When the host controller function is selected 

When HSE = 0, the USB port performs low-speed 
or full-speed operation. 

Set HSE to 0 when connection of a low-speed 
peripheral device to the USB port has been 
detected. 

When HSE = 1, this module executes the reset 
handshake protocol, and automatically allows the 
USB port to perform high-speed or full-speed 
operation according to the protocol execution 
result. 

This bit should be modified after detecting device 
connection (after detecting the ATTCH interrupt) 
and before executing a USB bus reset (before 
setting USBRESET to 1). 

(2) When the function controller function is selected 

When HSE = 0, this module performs full-speed 
operation. 

When HSE = 1, this module executes the reset 
handshake protocol, and automatically performs 
high-speed or full-speed operation according to 
the protocol execution result.  

This bit should be modified while DPRPU is 0. 

6 

DCFM 

0 

R/W 

Controller Function Select 

Selects the host controller function or function 
controller function. 

0: Function controller function is selected. 

1: Host controller function is selected. 

This bit should be modified while DPRPU and DPRD 
are 0.