CS8900-CQ3 Cirrus Logic, CS8900-CQ3 Datasheet - Page 115

• Manufacturer Part Number: CS8900-CQ3
• Description: Crystal LAN ISA Ethernet Controller
• Manufacturer: Cirrus Logic

DS271PP3
SWITCHING CHARACTERISTICS
CS8900A
Crystal LAN™ ISA Ethernet Controller
DMA Read
DMACKx active to IOR active
AEN active to IOR active
IOR active to Data Valid
IOR inactive to SD 3-state
IOR n-1 high to DMARQx inactive
DMACKx, AEN hold after IOR high
16-Bit I/O Write
Address, AEN, SBHE valid to IOCS16 low
Address, AEN, SBHE valid to IOW low
IOW pulse width
SD hold after IOW high
IOW low to SD valid
IOW inactive to active
Address hold after IOW high
SA [15:0],
AEN, SBHE
IOCS16
IOW
SD [15:0]
DMARQx
DMACKx
SD[15:0]
Parameter
AEN
IOR
CIRRUS LOGIC PRODUCT DATA SHEET
t
IOW2
t
DMA3
t
IOW1
Valid Address
t
IOW5
t
DMA2
t
DMA1
(Continued)
Valid
Data
t
16-Bit DMA Read
IOW3
16-Bit I/O Write
Valid Data In
t
DMA4
IOR
t
IOW7
n-1
Symbol
Valid
Data
t
t
t
t
t
t
DMAR1
DMAR2
DMAR3
DMAR4
DMAR5
DMAR6
t
t
t
t
t
t
t
t
IOW6
IOW1
IOW2
IOW3
IOW4
IOW5
IOW6
IOW7
t
IOW4
t
DMA5
t
DMA6
IOR
Min
110
60
10
20
20
35
n
Valid
Data
0
0
-
-
-
-
-
IN or OUT of chip
DIRECTION:
IN
OUT
IN
IN
IN or OUT of chip
DIRECTION:
Typ
30
-
-
-
-
-
-
-
-
-
-
-
OUT
IN
IN
IN
OUT
Max
135
20
35
10
-
-
-
-
-
-
-
-
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
115