CS8900-CQ3 Cirrus Logic, CS8900-CQ3 Datasheet - Page 116

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

SWITCHING CHARACTERISTICS
16-Bit Memory Write
Address, SBHE, CHIPSEL valid to MEMCS16 low
Address, SBHE, CHIPSEL valid to MEMW low
MEMW pulse width
MEMW low to SD valid
SD hold after MEMW high
Address hold after MEMW inactive
MEMW inactive to active
10BASE-T Transmit
TXD Pair Jitter into 100
TXD Pair Return to
TXD Pair Positive Hold Time at End of Packet
116
TXD±
SA [19:0],
SBHE,
CHIPSEL
MEMCS16
MEMW
SD [15:0]
50 mV after Last Positive Transition
Parameter
Load
CIRRUS LOGIC PRODUCT DATA SHEET
t
MEMW2
t TTX1
t
MEMW1
t
Valid Address
MEMW4
10BASE-T Transmit
16-Bit Memory Write
(Continued)
t
MEMW3
Valid Data In
Symbol
t
t
t
t
t
t
t
MEMW1
MEMW2
MEMW3
MEMW4
MEMW5
MEMW6
MEMW7
t
t
t
TTX1
TTX2
TTX3
t
MEMW7
Crystal LAN™ ISA Ethernet Controller
t
t
MEMW5
MEMW6
Min
250
110
20
35
0
0
-
-
-
-
IN or OUT of chip
DIRECTION:
t TTX3
Typ
IN
OUT
IN
IN
-
-
-
-
-
-
-
-
-
-
t TTX2
Max
4.5
30
40
8
-
-
-
-
-
-
CS8900A
DS271PP3
Unit
ns
ns
ns
ns
ns
ns
ns
ns
µs
ns