參數(shù)資料
型號: TSB12LV32-EP
英文描述: IC APEX 20KE FPGA 100K 324-FBGA
中文描述: 軍事增強塑料電機及電子學(xué)工程師聯(lián)合會1394-1995和P1394a兼容通用鏈路層控制器
文件頁數(shù): 32/106頁
文件大?。?/td> 605K
代理商: TSB12LV32-EP
2
16
2.2.11
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27
29 30 31
28
A
A
A
G
G
ATFAVAIL
C
ATACK
GRFUSED
The power-up reset value of this register =
6083_0000
h
BIT
NUMBER
BIT NAME
FUNCTION
DIR
DESCRIPTION
0
ATFCLR
ATF clear
R/W
ATF clear. When set to 1 will clear the ATF. This bit clears itself.
1
ATFWBMTY
ATF write
buffer empty
R
ATF write buffer empty. Set when the 4-quadlet FIFO write
buffer is empty.
2
11
ATFAVAIL
ATF space
available
R
Size of ATF available, in quadlets. The power-on value of this
field is 1000001000 (520 quadlets)
12
ATFFULL
ATF full bit
R
When the ATF is full, this bit will be set.
13
GRFCLR
GRF clear bit
R/W
GRF clear bit. Set to 1 to clear the contents of the GRF.
14
RESERVED
Reserved
15
GRFEMPTY
GRF empty
R
GRF empty. GRFEMPTY is set when the four-quadlet GRF
read buffer is empty.
16
CD
Check 33rd bit
(GRF read)
R
This bit is set to 1 when the quadlet pointed to by the GRF read
pointer is the first quadlet or the packet trailer.
17
21
ATACK
ATF
acknowledge
R
The acknowledge received in response to a packet sent via the
ATF.
22
31
GRFUSED
GRF space
used
R
GRF space used, in quadlets. This value is the amount of used
up quadlets in the GRF.
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