USB Registers
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16.5.3.32 USB1TDOWN Register (offset = D8h) [reset = 0h]
USB1TDOWN is shown in Figure 16-130 and described in Table 16-140.
Figure 16-130. USB1TDOWN Register
31 30 29 28 27 26 25 24
TX_TDOWN
R/W-0h
23 22 21 20 19 18 17 16
TX_TDOWN Reserved
R/W-0h
15 14 13 12 11 10 9 8
RX_TDOWN
R/W-0h
7 6 5 4 3 2 1 0
RX_TDOWN Reserved
R/W-0h
LEGEND: R/W = Read/Write; R = Read only; W1toCl = Write 1 to clear bit; -n = value after reset
Table 16-140. USB1TDOWN Register Field Descriptions
Bit Field Type Reset Description
31-17 TX_TDOWN R/W 0h Tx Endpoint Teardown.
Write '1' to corresponding bit to set.
Read as '0'.
Bit
31 = Endpoint 15 ...
Bit
17 = Endpoint 1
15-1 RX_TDOWN R/W 0h RX Endpoint Teardown.
Write '1' to corresponding bit to set.
Read as '0'.
Bit
15 = Endpoint 15 ...
Bit
1 = Endpoint 1
1898
Universal Serial Bus (USB) SPRUH73H–October 2011–Revised April 2013
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