![](http://datasheet.mmic.net.cn/390000/TSB42AA4I_datasheet_16839080/TSB42AA4I_139.png)
642
0x148 DBSTAT1 – Data Buffer Status 1 (continued)
BIT
NAME
TYPE
RESET
FUNCTION
24
BUF7EMPTY
RU
1
Buffer 7 empty – When set to 1, indicates that there is no data in the
current buffer. Software cannot read from this buffer when this bit is set
to 1.
23:21
RSVD
R0
0
Reserved – A write to this location has no effect. A read returns 0s.
20
BUF6WM1
RU
0
Buffer 6 watermark 1 This bit is set by hardware to indicate that the
number of quadlets in the associated buffer has risen above or fallen
below the value in DB6CFG3.WATERMARK1, depending on the
setting of DB6CFG0.WM1CTL.
19
BUF6WM0
RU
1
Buffer 6 watermark 0 This bit is set by hardware to indicate that the
number of quadlets in the associated buffer has risen above or fallen
below the value in DB6CFG3.WATERMARK0, depending on the
setting of DB6CFG0.WM0CTL.
18
BUF6LCELLAV
RU
0
Buffer 6 logical cell available – When set to 1, a logical cell has been
received and confirmed into a receive buffer.
17
BUF6FULL
RU
0
Buffer 6 full – When set to 1, indicates that there is no space available
in the current buffer. Software cannot write to this buffer when this bit is
set to 1.
16
BUF6EMPTY
RU
1
Buffer 6 empty – When set to 1, indicates that there is no data in the
current buffer. Software cannot read from this buffer when this bit is set
to 1.
15:13
RSVD
R0
0
Reserved – A write to this location has no effect. A read returns 0s.
12
BUF5WM1
RU
0
Buffer 5 watermark 1 This bit is set by hardware to indicate that the
number of quadlets in the associated buffer has risen above or fallen
below the value in DB5CFG3.WATERMARK1, depending on the
setting of DB5CFG0.WM1CTL.
11
BUF5WM0
RU
1
Buffer 5 watermark 0 This bit is set by hardware to indicate that the
number of quadlets in the associated buffer has risen above or fallen
below the value in DB5CFG3.WATERMARK0, depending on the
setting of DB5CFG0.WM0CTL.
10
BUF5LCELLAV
RU
0
Buffer 5 logical cell available – When set to 1, a logical cell has been
received and confirmed into a receive buffer.
9
BUF5FULL
RU
0
Buffer 5 full – When set to 1, indicates that there is no space available
in the current buffer. Software cannot write to this buffer when this bit is
set to 1.
8
BUF5EMPTY
RU
1
Buffer 5 empty – When set to 1, indicates that there is no data in the
current buffer. Software cannot read from this buffer when this bit is set
to 1.
7:5
RSVD
R0
0
Reserved – A write to this location has no effect. A read returns 0s.
4
BUF4WM1
RU
0
Buffer 4 watermark 1 This bit is set by hardware to indicate that the
number of quadlets in the associated buffer has risen above or fallen
below the value in DB4CFG3.WATERMARK1, depending on the
setting of DB4CFG0.WM1CTL.
3
BUF4WM0
RU
1
Buffer 4 watermark 0 This bit is set by hardware to indicate that the
number of quadlets in the associated buffer has risen above or fallen
below the value in DB4CFG3.WATERMARK0, depending on the
setting of DB4CFG0.WM0CTL.