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CS22220 Datasheet, PDF (28/34 Pages) Cirrus Logic – WIRELESS PCI/USB CONTROLLER
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Table 10. Attribute Memory ‘Read’ Timing Specification
Speed Version
Symbol
Item
Min
Read Cycle Time
tcR
600
Address Accesss Time
ta (A)
Card Enable Access Time
ta (CE)
Output Enable Access Time
ta (OE)
Output Disable Time from PC_NOE
tdis (OE)
Output Enable Time from PC_NCE
ten (OE)
5
Data Valid from Address Change
tv (A)
0
Address Setup Time
tsu (A)
100
Address Hold Time
th (A)
35
Card Enable Setup Time
tsu (CE)
0
Card Enable Hold Time
th (CE)
35
PC_NWAIT Valid from PC_NOE
tv (WT-OE)
PC_NWAIT Pulse Width
tw (WT)
Data Setup for PC_NWAIT Released
tv (WT)
0
600 ns
Max
600
600
300
150
100
12 us
PC_A[25:0], PC_NREG
PC_NCE
PC_NOE
PC_NWE
PC_NWAIT
PC_D[15:0](Din)
PC_D[15:0](Dout)
tc(W)
tsu(CE)
tsu(CE-WEH)
tsu(A-WEH)
tsu(A)
tw(WE)
th(CE)
trec(WE)
tsu(OE-WE)
tdis(OE)
tv(WT-WE)
tw(WT)
tsu(D-WEH)
tv(WT)
th(OE-WE)
th(D)
Valid Data Input
tdis(WE)
ten(WE)
ten(OE)
Figure 9. Memory ‘Write’ Timing Diagram
CS22220 Wireless PCMCIA Controller
28 of 34
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