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Section 26 USB 2.0 Host/Function Module
R01UH0134EJ0400 Rev. 4.00 Page 1389 of 2108
Sep 24, 2014
SH7262 Group, SH7264 Group
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
Bit:
Initial value:
R/W:
0000000000000000
RRRRRRRR/WRR/W RRRRRR
————
—
—— —
TRNEN
SEL
——————
BRDYM
Bit Bit Name
Initial
Value R/W Description
15 to 9 All 0 R Reserved
These bits are always read as 0. The write value
should always be 0.
8 TRNENSEL 0 R/W Transaction-Enabled Time Select
Selects the transaction-enabled time either for full- or
low-speed communication, during which this module
issues tokens in a frame.
0: For non-low-speed communication
1: For low-speed communication
This bit is valid only when the host controller function
is selected. Even when the host controller function is
selected, the setting of this bit has no effect on the
transaction-enabled time during high-speed
communication.
This bit should be set to 0 when the function
controller function is selected.
7 0 R Reserved
This bit is always read as 0. The write value should
always be 0.
6 BRDYM 0 R/W BRDY Interrupt Status Clear Timing for each Pipe
Specifies the timing for clearing the BRDY interrupt
status for each pipe.
Set the BRDYM bit during the initial settings of the
USB 2.0 host/function module (before performing
data communication). Do not change the setting of
the BRDYM bit after data communication starts.
0: Writing 0 clears the status.
1: This module automatically clears the status when
data has been read from the FIFO buffer or data
has been written to the FIFO buffer.
5 to 0 All 0 R Reserved
These bits are always read as 0. The write value
should always be 0.