SH7670 Datasheet, PDF (663/1292 Pages) Renesas Technology Corp – 32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7670 Series

Bit
Bit Name
5
DRPD
4
DPRPU
3 to 1 
Section 17 USB 2.0 Host/Function Module (USB)
Initial
Value
0
0
All 0
R/W Description
R/W D+/D− Line Resistor Control
Enables or disables pulling down D+ and D- lines
when the host controller function is selected.
0: Pulling down the lines is disabled.
1: Pulling down the lines is enabled.
This bit should be set to 1 if the host controller
function is selected, and should be set to 0 if the
function controller function is selected.
R/W D+ Line Resistor Control
Enables or disables pulling up D+ line when the
function controller function is selected.
0: Pulling up the line is disabled.
1: Pulling up the line is enabled.
Setting this bit to 1 when the function controller
function is selected allows this module to pull up the
D+ line to 3.3 V, thus notifying the USB host of
connection. Modifying this bit from 1 to 0 allows this
module to cancel pulling up the D+ line, thus notifying
the USB host of disconnection.
This bit should be set to 1 if the function controller
function is selected, and should be set to 0 if the host
controller function is selected.
R
Reserved
These bits are always read as 0. The write value
should always be 0.
Rev. 1.00 Nov. 14, 2007 Page 637 of 1262
REJ09B0437-0100