參數(shù)資料
型號(hào): W9966CF
文件頁(yè)數(shù): 38/44頁(yè)
文件大小: 278K
代理商: W9966CF
Prel i m nary -38- November 1997
W9966CF/TF
Video Camera Interface Controller with Compression
tWP
Write Pulse Width
0.4 tWC
0.6 tWC
ns
tWR
Write Recovery Time (SCS0/1#, SWE#)
1
ns
tDW
Data Valid to End of Write
tRC -5
ns
tDH
Data Hold Time from End of Write
2
ns
9.3.5 Standard Parallel Port (SPP) Timing Specifications
NSTB#
BUSY
PD[7:0],
NAFD#
NACK#
t
SU
t
H
t
RPY
t
STB
t
RDY
t
BUSY
t
ACK
t
ATB
FIGURE 9.6 STANDARD PARALLEL PORT (SPP) TIMING
TABLE 9.8 STANDARD PARALLEL PORT (SPP) TIMING PARAMETERS
Symbol
Parameter
Min
Typ
Max
Unit
tSU
Data Setup Time
500
ns
tSTB
Strobe Pulse Width
500
ns
tH
Data Hold Time
500
ns
tRDY
Busy Inactive to Strobe Active
0
ns
tBUSY
Strobe Active to Bust Active
500
ns
tRPY
Strobe Inactive to Ack Active
0
ns
tACK
Ack Pulse Width
500
10000
ns
tATB
Ack Inactive to Busy Inactive
0
ns
9.3.6 Enhanced Parallel Port (EPP) Timing Specifications
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