
AMD Geode™ SC2200 Processor Data Book
427
Electrical Specifications
32580B
Figure 9-44. Enhanced Parallel Port Timing Diagram
Table 9-33. Enhanced Parallel Port Timing Parameters
Symbol
Parameter
Min
Max
EPP
1.7
EPP
1.9
Unit
Comments
t
WW19a
WRITE# active from WAIT# low
45
x
ns
t
WW19ia
WRITE# inactive from WAIT# low
45
x
ns
t
WST19a
DSTRB# or ASTRB# active from
WAIT# low
65
x
ns
t
WEST
DSTRB# or ASTRB# active after
WRITE# active
10
x
x
ns
t
WPDH
PD[7:0] hold after WRITE#
inactive
0
x
x
ns
t
WPDS
PD[7:0] valid after WRITE#
active
15
x
x
ns
t
EPDW
PD[7:0] valid width
80
x
x
ns
t
EPDH
PD[7:0] hold after DSTRB# or
ASTRB# inactive
0
x
x
ns
WRITE#
DSTRB#
ASTRB#
PD[7:0]
WAIT#
Valid
t
WW19ia
t
WPDH
t
EPDH
t
EPDW
or
t
WW19a
t
WST19a
t
WPDS
t
WEST
t
WST19a
Содержание Geode SC2200
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