SH7641 Datasheet, PDF (814/1036 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperH™ RISC engine Family / SH7641 Series

Section 20 USB Function Module
Initial
Bit
Bit Name Value
2
EP2STL
0
1
EP1STL
0
0
EP0STL
0
R/W Description
R/W EP2 Stall
When this bit is set to 1, endpoint 2 is placed in the
stall state.
R/W EP1 Stall
When this bit is set to 1, endpoint 1 is placed in the
stall state.
R/W EP0 Stall
When this bit is set to 1, endpoint 0 is placed in the
stall state.
20.3.22 USB Transceiver Control Register (USBXVERCR)
The USB transceiver control register (USBXVERCR) selects the on-chip transceiver or the
external transceiver. Make sure to check if USBIFR1/VBUSMN=0 (VBUS pin disconnection) to
overwrite this register.
USBXVERCR can be initialized to H'00 by a power-on reset.
Bit
7 to 1
Bit Name

Initial
Value
All 0
0
XVEROFF 0
R/W Description
R Reserved
The write value should always be 0.
R/W Transceiver Control
1: The on-chip transceiver operates.
0: The on-chip transceiver function stops, and digital
signals for the external transceiver are output from
the port.
Rev. 4.00 Sep. 14, 2005 Page 764 of 982
REJ09B0023-0400