Instruction Manual

130 DS271F5
CS8900A
Crystal LAN™ Ethernet Controller
CIRRUS LOGIC PRODUCT DATASHEET
SWITCHING CHARACTERISTICS (Continued)
Parameter Symbol Min Typ Max Unit
AUI Transmit
DO Pair Rise and Fall Times t
ATX1
-4-ns
DO Pair Jitter at Bit Cell Center t
ATX2
-0.4-ns
DO Pair Positive Hold Time at Start of Idle t
ATX3
-250-ns
DO Pair Return to ≤ 40 mVp after Last Positive Transition t
ATX4
-6.0-µs
AUI Receive
DI Pair Rise and Fall Time t
ARX1
-8-ns
Allowable Bit Cell Center and Boundary Jitter in Data t
ARX2
-±14-ns
Carrier Sense Assertion Delay t
ARX3
-240-ns
Invalid Preamble Bits after Carrier Sense Asserts t
ARX4
-2-bits
Carrier Sense Deassertion Delay t
ARX5
-200-ns
AUI Collision
CI Pair Cycle Time t
ACL1
-100-ns
CI Pair Rise and Fall Times t
ACL2
-8-ns
CI Pair Return to Zero from Last Positive Transition t
ACL3
-200-ns
Collision Assertion Delay t
ACL4
-125-ns
Collision Deassertion Delay t
ACL5
-225-ns
DO±
t
ATX1
t
ATX1
t
ATX2
t
ATX4
t
ATX3
1 0 00
Figure 59. AUI Transmit
DI±
t
ARX1
t
ARX2
1 0 10
t
ARX3
t
ARX4
t
ARX5
t
ARX1
Carrier Sense (Internal)
Figure 60. AUI Receive
t
ACL1
CI±
t
ACL4
t
ACL5
Collision (Internal)
t
ACL2
t
ACL2
t
ACL3
Figure 61. AUI Collision