SH7203 Datasheet, PDF (1174/1686 Pages) Renesas Technology Corp – 32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7200 Series

Section 23 USB 2.0 Host/Function Module (USB)
23.3.27 USB Request Length Register (USBLENG)
USBLENG is a register that stores setup requests for control transfers. When the peripheral
controller function is selected, the value of wLength that has been received is stored. When the
host controller function is selected, the value of wLength to be transmitted is set.
This register is initialized by a power-on reset, a software reset, and a USB bus reset.
Bit: 15 14 13 12 11 10 9
8
7
6
5
4
3
2
1
0
WLENGTH[15:0]
Initial value: 0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
R/W: R/W* R/W* R/W* R/W* R/W* R/W* R/W* R/W* R/W* R/W* R/W* R/W* R/W* R/W* R/W* R/W*
Bit
Bit Name
Initial
Value R/W Description
15 to 0 WLENGTH
[15:0]
H'0000 R/W* Length
These bits store the USB request wLength value.
Note: When the function controller function is selected, these bits can only be read. When the
host controller function is selected, these bits can be read or written to.
Rev. 2.00 Apr. 16, 2008 Page 1144 of 1652
REJ09B0313-0200