CS22220 datasheet(28/34 Pages) CIRRUS

28 / 34 page

CS22220 Wireless PCMCIA Controller

28 of 34

DS557PP2

Rev. 3.0

www.cirrus.com

Table 10. Attribute Memory ‘Read’ Timing Specification

600 ns

Speed Version

Item

Symbol

Min

Max

Read Cycle Time

tcR

600

Address Accesss Time

ta (A)

600

Card Enable Access Time

ta (CE)

600

Output Enable Access Time

ta (OE)

300

Output Disable Time from PC_NOE

tdis (OE)

150

Output Enable Time from PC_NCE

ten (OE)

Data Valid from Address Change

tv (A)

Address Setup Time

tsu (A)

100

Address Hold Time

th (A)

Card Enable Setup Time

tsu (CE)

Card Enable Hold Time

th (CE)

PC_NWAIT Valid from PC_NOE

tv (WT-OE)

100

PC_NWAIT Pulse Width

tw (WT)

12 us

Data Setup for PC_NWAIT Released

tv (WT)

Figure 9. Memory ‘Write’ Timing Diagram

PC_A[25:0], PC_NREG

PC_NCE

PC_NOE

PC_NWAIT

PC_D[15:0](Din)

c(W)

su(CE-WEH)

su(CE)

su(A-WEH)

su(A)

su(OE-WE)

w(WE)

PC_NWE

PC_D[15:0](Dout)

Valid Data Input

v(WT-WE)

v(WT)

w(WT)

su(D-WEH)

dis(WE)

dis(OE)

en(WE)

h(CE)

rec(WE)

h(D)

h(OE-WE)

en(OE)

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