USB Registers
16.5.5.36 TXGCR8 Register (offset = 900h) [reset = 0h]
TXGCR8 is shown in
and described in
Figure 16-187. TXGCR8 Register
31
30
29
28
27
26
25
24
TX_ENABLE
TX_TEARDOWN
Reserved
R/W-0h
R/W-0h
23
22
21
20
19
18
17
16
Reserved
15
14
13
12
11
10
9
8
Reserved
TX_DEFAULT_QMGR
TX_DEFAULT_QNUM
W-0h
W-0h
7
6
5
4
3
2
1
0
TX_DEFAULT_QNUM
W-0h
LEGEND: R/W = Read/Write; R = Read only; W1toCl = Write 1 to clear bit; -n = value after reset
Table 16-199. TXGCR8 Register Field Descriptions
Bit
Field
Type
Reset
Description
31
TX_ENABLE
R/W
0h
This field enables or disables the channel
0 = channel is disabled
1 = channel is enabled This field will be cleared after a channel
teardown is complete.
30
TX_TEARDOWN
R/W
0h
Setting this bit will request the channel to be torn down.
This field will remain set after a channel teardown is complete.
13-12
TX_DEFAULT_QMGR
W
0h
This field controls the default queue manager number that will be
used to queue teardown descriptors back to the host.
11-0
TX_DEFAULT_QNUM
W
0h
This field controls the default queue number within the selected
queue manager onto which teardown descriptors will be queued
back to the host.
Table
98 -Tx Channel N Global Configuration Registers
1972
Universal Serial Bus (USB)
SPRUH73H – October 2011 – Revised April 2013
Copyright © 2011–2013, Texas Instruments Incorporated