Network Card User Manual

www.ti.com Ethernet Media Access Controller (EMAC) Registers
5.3 Transmit Teardown Register (TXTEARDOWN)
The transmit teardown register (TXTEARDOWN) is shown in Figure 42 and described in Table 40.
Figure 42. Transmit Teardown Register (TXTEARDOWN)
31 16
Reserved
R-0
15 3 2 0
Reserved TXTDNCH
R-0 R/W-0
LEGEND: R = Read only; R/W = Read/Write; -n = value after reset
Table 40. Transmit Teardown Register (TXTEARDOWN) Field Descriptions
Bit Field Value Description
31-3 Reserved 0 Reserved
2-0 TXTDNCH 0-7h Transmit teardown channel. The transmit channel teardown is commanded by writing the encoded
value of the transmit channel to be torn down. The teardown register is read as 0.
0 Teardown transmit channel 0
1h Teardown transmit channel 1
2h Teardown transmit channel 2
3h Teardown transmit channel 3
4h Teardown transmit channel 4
5h Teardown transmit channel 5
6h Teardown transmit channel 6
7h Teardown transmit channel 7
87
SPRUFI5B–March 2009–Revised December 2010 Ethernet Media Access Controller (EMAC)/Management Data Input/Output
(MDIO)
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