Filter
Top Products
Section 26 USB 2.0 Host/Function Module
R01UH0134EJ0400 Rev. 4.00 Page 1471 of 2108
Sep 24, 2014
SH7262 Group, SH7264 Group
26.3.40 USB AC Characteristics Switching Register 1 (USBACSWR1)
USBACSWR1 makes the necessary settings for the USB transceiver built in this module. 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:
0000000000000000
R R R R R R/W RR RRRRRRRR
——————UACS25——————— —
—
Bit Bit Name
Initial
Value
R/W Description
15 to 10 All 0 R Reserved
These bits are always read as 0. The write value
should always be 0.
9 UACS25 0 R/W USB AC Characteristics Switching 25
This bit adjusts the eye-pattern characteristics in high
speed.
8 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 26.5.1, Procedure for Setting the USB Transceiver.