SH7205 Datasheet, PDF (1291/1904 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7200 Series

Section 24 USB 2.0 Host/Function Module (USB)
24.3.45 USB AC Characteristics Switching Register 0 (USBACSWR0)
The USBACSWR0 registers specify a USB transceiver that is stored in this module. This register
is initialized by a power-on reset.
Bit: 15 14 13 12 11 10 9
8
7
6
5
4
3
2
1
0
— UACS14 —
—
—
—
—
—
—
— UACS5 —
—
—
—
—
Initial value: 0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
R/W: R R/W R
R
R
R
R
R
R
R R/W R
R
R
R
R
Initial
Bit
Bit Name
Value R/W Description
15

0
R Reserved
This bit is always read as 0. The write value should
always be 0.
14
UACS14
0
R/W USB AC Characteristics Switching 14
This bit adjusts the cross point power supply voltage
in low speed.∗
13 to 6 
All 0
R Reserved
These bits are always read as 0. The write value
should always be 0.
5
UACS5
0
R/W USB AC Characteristics Switching 5
This bit adjusts the disconnection power supply
voltage.∗
4 to 0 
All 0
R Reserved
These bits are always read as 0. The write value
should always be 0.
Note: ∗ This bit should always be 1 when using this module.
For details, refer to section 24.5.1, Procedure for Setting the USB Transceiver.
Rev. 1.00 Mar. 25, 2008 Page 1259 of 1868
REJ09B0372-0100