CS8900-CQ3 Cirrus Logic, CS8900-CQ3 Datasheet - Page 114
CS8900-CQ3
Manufacturer Part Number
CS8900-CQ3
Description
Crystal LAN ISA Ethernet Controller
Manufacturer
Cirrus Logic
Datasheet
1.CS8900-CQ3.pdf
(128 pages)
- Current page: 114 of 128
- Download datasheet (2Mb)
SWITCHING CHARACTERISTICS
16-Bit Memory Read, IOCHRDY Not Used
SA [19:0], SBHE, CHIPSEL, active to MEMCS16 low
Address, SBHE, CHIPSEL active to MEMR active
MEMR low to SD valid
Address, SBHE, CHIPSEL hold after MEMR inactive
MEMR inactive to SD 3-state
MEMR inactive to active
16-Bit Memory Read, With IOCHRDY
MEMR low to IOCHRDY inactive
IOCHRDY low pulse width
IOCHRDY active to SD valid
114
SA [19:0],
SBHE,
CHIPSEL
SA [19:0],
SBHE,
CHIPSEL
IOCHRDY
MEMCS16
MEMR
SD [15:0]
MEMCS16
MEMR
SD [15:0]
Parameter
CIRRUS LOGIC PRODUCT DATA SHEET
t
MEMR1
t
16-Bit Memory Read, IOCHRDY not used
MEMR2
16-Bit Memory Read, with IOCHRDY
t
MEMR8
Valid Address
Valid Address
t
MEMR7
t
MEMR3
(Continued)
t
MEMR9
Valid Data
t
MEMR4
Valid Data
Symbol
t
t
t
t
t
t
t
t
t
MEMR1
MEMR2
MEMR3
MEMR4
MEMR5
MEMR6
MEMR7
MEMR8
MEMR9
t
MEMR6
t
Crystal LAN™ ISA Ethernet Controller
MEMR5
Min
125
10
35
0
-
-
-
-
-
IN or OUT of chip
IN or OUT of chip
DIRECTION:
DIRECTION:
IN
OUT
IN
OUT
OUT
IN
OUT
IN
OUT
Typ
30
35
-
-
-
-
-
-
-
Max
135
175
30
0
-
-
-
-
-
CS8900A
DS271PP3
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
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