CS8900A
Crystal LAN™ ISA Ethernet Controller
SWITCHING CHARACTERISTICS (Continued)
Parameter
AUI Transmit
Symbol
Min
Typ
Max
Unit
DO Pair Rise and Fall Times
tATX1
tATX2
tATX3
tATX4
-
-
-
-
-
5
0.5
-
ns
ns
ns
µs
DO Pair Jitter at Bit Cell Center
DO Pair Postitive Hold Time at Start of Idle
DO Pair Return to ≤ 40 mVp affter Last Positive Transition
AUI Receive
-
200
-
8.0
DI Pair Rise and Fall Time
tARX1
tARX2
tARX3
tARX4
tARX5
-
-
10
±18
-
ns
ns
Allowable Bit Cell Center and Boundary Jitter in Data
Carrier Sense Assertion Delay
Invalid Preamble Bits after Carrier Sense Asserts
Carrier Sense Deassertion Delay
AUI Collision
-
-
-
240
ns
1
-
-
2
bits
ns
150
250
CI Pair Cycle Time
tACL1
tACL2
tACL3
tACL4
tACL5
85
-
100
115
10
ns
ns
ns
ns
ns
CI Pair Rise and Fall Times
-
-
-
-
CI Pair Return to Zero from Last Positive Transition
Collision Assertion Delay
160
50
-
200
300
Collision Deassertion Delay
150
0
0
0
1
t
ATX4
DO±
t
t
t
t
ATX2
ATX3
ATX1
ATX1
AUI Transmit
0
1
0
1
DI±
t
t
ARX1
ARX2
t
ARX1
t
t
t
ARX3
ARX4
ARX5
Carrier Sense (Internal)
AUI Receive
CI±
t
ACL3
t
ACL1
t
t
ACL2
ACL2
t
ACL4
t
ACL5
Collision (Internal)
AUI Collision
CIRRUS LOGIC PRODUCT DATA SHEET
118
DS271PP3
CIRRUS [ CIRRUS LOGIC ]
