Renesas R5S72623 User Manual

 

Section 26   USB 2.0 Host/Function Module 

R01UH0134EJ0400  Rev. 4.00  

 

Page 1409 of 2108 

Sep 24, 2014 

 

 

 
SH7262 Group, SH7264 Group 

Frame Number Register (UFRMNUM) 

UFRMNUM is a register that indicates the 

frame number. 

This register is initialized by a power-on reset. 

15

14

13

12

11

10

9

8

7

6

5

4

3

2

1

0

Bit:

Initial value:

R/W:

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

R

R

R

R

R

R

R

R

R

R

R

R

R

R

R

R

—

—

—

—

—

—

—

—

—

—

—

—

—

UFRNM[2:0]

 

 

15 to 3 

 All 

0 

R 

Reserved 

These bits are always read as 0. The write value 
should always be 0. 

2 to 0 

UFRNM[2:0] 

000 

R 

Frame 

The 

frame number can be confirmed. 

This module sets these bits to indicate the 

frame 

number during high-speed operation. 

During operation other than high-speed operation, 
this module sets these bits to B'000. 

Read these bits twice to check that the same value is 
read.