![](http://datasheet.mmic.net.cn/390000/TSB42AA4I_datasheet_16839080/TSB42AA4I_136.png)
639
0x140 DBCTL – Data Buffer Control (Continued)
BIT
NAME
20
BUF5PKTFLSH
TYPE
R0W
RESET
0
FUNCTION
Buffer 5 packet flush – Writing a 1 to this location causes the packet at
the top of the current buffer to be flushed. A packet flush should not be
performed on an empty buffer.
19
18
17
RSVD
RSVD
BUF4FLSH
R0
R0W
R0W
0
0
0
Reserved – A write to this location has no effect. A read returns 0.
Reserved. Do not write to this bit.
Buffer 4 flush – Writing a 1 to this location causes all contents to be
flushed from the associated buffer. All pointers and related state
machines are synchronously reset when this bit is set.
16
BUF4PKTFLSH
R0W
0
Buffer 4 packet flush – Writing a 1 to this location causes the packet at
the top of the current buffer to be flushed. A packet flush should not be
performed on an empty buffer.
15
14
13
RSVD
RSVD
BUF3FLSH
R0
R0W
R0W
0
0
0
Reserved – A write to this location has no effect. A read returns 0.
Reserved. Do not write to this bit.
Buffer 3 flush – Writing a 1 to this location causes all contents to be
flushed from the associated buffer. All pointers and related state
machines are synchronously reset when this bit is set.
12
BUF3PKTFLSH
R0W
0
Buffer 3 packet flush – Writing a 1 to this location causes the packet at
the top of the current buffer to be flushed. A packet flush should not be
performed on an empty buffer.
11
10
9
RSVD
RSVD
BUF2FLSH
R0
R0W
R0W
0
0
0
Reserved – A write to this location has no effect. A read returns 0.
Reserved. Do not write to this bit.
Buffer 2 flush – Writing a 1 to this location causes all contents to be
flushed from the associated buffer. All pointers and related state
machines are synchronously reset when this bit is set.
8
BUF2PKTFLSH
R0W
0
Buffer 2 packet flush – Writing a 1 to this location causes the packet at
the top of the current buffer to be flushed. A packet flush should not be
performed on an empty buffer.
7
6
5
RSVD
RSVD
BUF1FLSH
R0
R0W
R0W
0
0
0
Reserved – A write to this location has no effect. A read returns 0.
Reserved. Do not write to this bit.
Buffer 1 flush – Writing a 1 to this location causes all contents to be
flushed from the associated buffer. All pointers and related state
machines are synchronously reset when this bit is set.
4
BUF1PKTFLSH
R0W
0
Buffer 1 packet flush – Writing a 1 to this location causes the packet at
the top of the current buffer to be flushed. A packet flush should not be
performed on an empty buffer.
3
2
1
RSVD
RSVD
BUF0FLSH
R0
R0W
R0W
0
0
0
Reserved – A write to this location has no effect. A read returns 0.
Reserved. Do not write to this bit.
Buffer 0 flush – Writing a 1 to this location causes all contents to be
flushed from the associated buffer. All pointers and related state
machines are synchronously reset when this bit is set.
0
BUF0PKTFLSH
R0W
0
Buffer 0 packet flush – Writing a 1 to this location causes the packet at
the top of the current buffer to be flushed. A packet flush should not be
performed on an empty buffer.