參數(shù)資料
型號: TSB42AA9IPZT
廠商: Texas Instruments, Inc.
英文描述: STORAGELYNX 1394 LINK-LAYER CONTROLLER FOR ATA/ATAPI STORAGE PRODUCTS
中文描述: STORAGELYNX 1394鏈路層的ATA控制器/ ATAPI儲存產(chǎn)品
文件頁數(shù): 140/183頁
文件大?。?/td> 798K
代理商: TSB42AA9IPZT
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643
0x148 DBSTAT1 – Data Buffer Status 1 (Continued)
BIT
NAME
TYPE
RESET
FUNCTION
2
BUF4LCELLAV
RU
0
Buffer 4 logical cell available – When set to 1, a logical cell has been
received and confirmed into a receive buffer.
1
BUF4FULL
RU
0
Buffer 4 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.
0
BUF4EMPTY
RU
1
Buffer 4 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.
0x14C DBINT0 – Data Buffer Interrupts 0
BIT
NAME
TYPE
RESET
FUNCTION
31
BUFF3CELLCFRM
RCU
0
Buffer 3 cell confirm – This bit is set by hardware to indicate that a
complete logical cell has been confirmed into the associated buffer.
30
BUFF3TSREL
RCU
0
Buffer 3 time stamp release – This bit is set by hardware to indicate
that a time-stamped logical cell in the current buffer is ready to be
released, irrespective of buffer direction.
29
BUF3AGED
RCU
0
Buffer 3 time stamp expired – This bit is set by hardware to indicate
that a time-stamped logical cell in the current buffer has been
flushed because its time stamp expired, irrespective of buffer
direction.
28
BUF3WM1
RCU
0
Buffer 3 watermark 1 This bit is set by hardware to indicate that
DBSTAT0.BUF3WM1 has changed its status from 0 to 1.
27
BUF3WM0
RCU
0
Buffer 3 watermark 0 This bit is set by hardware to indicate that
DBSTAT0.BUF3WM0 has changed its status from 0 to 1.
26
RSVD
R0
0
Reserved – A write to this location has no effect. A read returns 0.
25
BUF3FULL
RCU
0
Buffer 3 full – When set to 1, indicates that there is no space
available in the current buffer.
24
BUF3EMPTY
RCU
0
Buffer 3 empty – When set to 1, indicates that there is no data in the
current buffer.
23
BUF2CELLCFRM
RCU
0
Buffer 2 cell confirm – This bit is set by hardware to indicate that a
complete logical cell has been confirmed into the associated buffer.
22
BUF2TSREL
RCU
0
Buffer 2 time stamp release – This bit is set by hardware to indicate
that a time-stamped logical cell in the current buffer is ready to be
released, irrespective of buffer direction.
21
BUF2AGED
RCU
0
Buffer 2 time stamp expired – This bit is set by hardware to indicate
that a time-stamped logical cell in the current buffer has been
flushed because its time stamp expired, irrespective of buffer
direction.
20
BUF2WM1
RCU
0
Buffer 2 watermark 1 This bit is set by hardware to indicate that
DBSTAT0.BUF2WM1 has changed its status from 0 to 1.
19
BUF2WM0
RCU
0
Buffer 2 watermark 0 This bit is set by hardware to indicate that
DBSTAT0.BUF3WM0 has changed its status from 0 to 1.
18
RSVD
R0
0
Reserved – A write to this location has no effect. A read returns 0.
17
BUF2FULL
RCU
0
Buffer 2 full – When set to 1, indicates that there is no space
available in the current buffer.
16
BUF2EMPTY
RCU
1
Buffer 2 empty – When set to 1, indicates that there is no data in the
current buffer.
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