91C100FDREVB Datasheet, PDF (64/68 Pages) SMSC Corporation – FEAST FAST ETHERNET CONTROLLER WITH FULL DUPLEX CAPABILITY

RA2-RA16
nRWE0-nRWE3
nROE
RD0-RD31
RA2-RA16
nRWE0-nRWE3
nROE
RD0-RD31
RA2-RA16
nRWE0-nRWE3
nROE
RD0-RD31
t34
t35
t38
t51
t39
t36
t37
WRITE CYCLE
t38
t51
READ CYCLE
t51
t38
t38
READ CYCLE
t34
t35
t39
t36
t37
WRITE CYCLE
t51
t38
t51
t38
MULTIPLE READ CYCLES
FIGURE 24 - SRAM INTERFACE
PARAMETER
t34 Write – RA2-RA16 Setup to nRWE0-nRWE3 Falling
t35 Write – RA2-RA16 Hold after nRWE0-nRWE3 Rising
t36 Write – RD0-RD31 Setup to nRWE0-nRWE3 Rising
t37 Write – RD0-RD31 Hold after nRWE0-nRWE3 Rising
t39 Write – nRWE0-nRWE3 Pulse Width
t38 Read – RA2-RA16 Valid to RD0-RD31 Valid
t51 Read – RD0-RD31 Hold after RA2-RA16 Change
MIN TYP MAX
0
0
12
0
15
25
12
UNITS
ns
ns
ns
ns
ns
ns
ns
SMSC DS – LAN91C100FD REV. B
Page 64
Rev. 05/31/2000