Ethernet Subsystem Registers
14.5.2.3 TX_TEARDOWN Register (offset = 8h) [reset = 0h]
TX_TEARDOWN is shown in
and described in
.
CPDMA_REGS TX TEARDOWN REGISTER
Figure 14-31. TX_TEARDOWN Register
31
30
29
28
27
26
25
24
TX_TDN_RDY
Reserved
R-0h
R-0h
23
22
21
20
19
18
17
16
Reserved
R-0h
15
14
13
12
11
10
9
8
Reserved
R-0h
7
6
5
4
3
2
1
0
Reserved
TX_TDN_CH
R-0h
R/W-0h
LEGEND: R/W = Read/Write; R = Read only; W1toCl = Write 1 to clear bit; -n = value after reset
Table 14-42. TX_TEARDOWN Register Field Descriptions
Bit
Field
Type
Reset
Description
31
TX_TDN_RDY
R
0h
Tx Teardown Ready - read as zero, but is always assumed to be
one (unused).
30-3
Reserved
R
0h
2-0
TX_TDN_CH
R/W
0h
Tx Teardown Channel - Transmit channel teardown is commanded
by writing the encoded value of the transmit channel to be torn
down.
The teardown register is read as zero.
000 - teardown transmit channel 0 ...
111 - teardown transmit channel 7
1260
Ethernet Subsystem
SPRUH73H – October 2011 – Revised April 2013
Copyright © 2011–2013, Texas Instruments Incorporated