AMD Geodeā„¢ SC2200 Processor Data Book 427
Electrical Specifications 32580B
Figure 9-44. Enhanced Parallel Port Timing DiagramTable 9-33. Enhanced Parallel Port Timing Parameters
Symbol Parameter Min Max
EPP
1.7
EPP
1.9 Unit Comments
tWW19a WRITE# active from WAIT# low 45 x ns
tWW19ia WRITE# inactive from WAIT# low 45 x ns
tWST19a DSTRB# or ASTRB# active from
WAIT# lo w
65 x ns
tWEST DSTRB# or ASTRB# active after
WRITE# active
10 x x ns
tWPDH PD[7:0] hold after WRITE#
inactive
0xxns
tWPDS PD[7:0] valid after WRITE#
active
15 x x ns
tEPDW PD[7:0] valid width 80 x x ns
tEPDH PD[7:0] hold after DSTRB# or
ASTRB# inactive
0xxns
WRITE#
DSTRB#
ASTRB#
PD[7:0]
WAIT#
Valid
tWW19ia
tWPDH tEPDH
tEPDW
or
tWW19a
tWST19a
tWPDS
tWEST
tWST19a