CS8900A
Crystal LAN™ ISA Ethernet Controller
SWITCHING CHARACTERISTICS (Continued)
Parameter
External Boot PROM Access
Address active to MEMR
Symbol
Min
Typ
Max
Unit
tBPROM1
tBPROM2
tBPROM3
20
-
-
-
-
-
ns
ns
ns
MEMR active to CSOUT low
MEMR inactive to CSOUT high
EEPROM
35
40
-
EESK Setup time relative to EECS
EECS/ELCS_b Setup time wrt ↑ EESK
EEDataOut Setup time wrt ↑ EESK
EEDataOut Hold time wrt ↑ EESK
EEDataIn Hold time wrt ↑ EESK
EECS Hold time wrt ↓ EESK
Min EECS Low time during programming
tSKS
tCCS
tDIS
tDIH
tDH
100
250
250
500
10
-
-
-
-
-
-
-
-
-
-
-
-
-
-
ns
ns
ns
ns
ns
ns
ns
tCSH
tCS
100
1000
CS
SA [19:0]
t
BPROM1
MEMR
t
t
BPROM2
BPROM3
CSOUT
External Boot PROM Access
EESK
t
t
CSH
SKS
t
t
CS
EECS
CSS
t
DIH
t
DIS
EEData Out
t
DH
EEData In
(Read)
EEPROM
CIRRUS LOGIC PRODUCT DATA SHEET
DS271PP3
119
CIRRUS [ CIRRUS LOGIC ]
