CS8900A-CQZ View Datasheet(PDF) - Cirrus Logic

Part Name

Description

Manufacturer

CS8900A-CQZ

Crystal LAN™ Ethernet Controller

Cirrus Logic 

CS8900A

Crystal LAN™ Ethernet Controller

SWITCHING CHARACTERISTICS (Continued)

Parameter

AUI Transmit

DO Pair Rise and Fall Times

DO Pair Jitter at Bit Cell Center

DO Pair Positive Hold Time at Start of Idle

DO Pair Return to ≤ 40 mVp after Last Positive Transition

AUI Receive

DI Pair Rise and Fall Time

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

CI Pair Cycle Time

CI Pair Rise and Fall Times

CI Pair Return to Zero from Last Positive Transition

Collision Assertion Delay

Collision Deassertion Delay

Symbol Min

tATX1

-

tATX2

-

tATX3

200

tATX4

-

tARX1

-

tARX2

-

tARX3

-

tARX4

1

tARX5

150

tACL1

85

tACL2

-

tACL3

160

tACL4

50

tACL5

150

DO±

tATX1

0

0

0

1

tATX1 tATX2

Figure 44. AUI Transmit

Typ

Max Unit

-

5

ns

-

0.5

ns

-

-

ns

-

8.0

µs

-

10

ns

-

±18

ns

240

-

ns

-

2

bits

-

250

ns

100

115

ns

-

10

ns

-

-

ns

-

200

ns

-

300

ns

tATX4

tATX3

D I±

tARX1

tARX1

tARX3

Carrier Sense (Internal)

tARX4

0

1

0

tARX2

1

tARX5

Figure 45. AUI Receive

C I±

t ACL4

Collision (Internal)

DS271F4

t ACL1

t ACL2

tACL2

tACL3

t ACL5

Figure 46. AUI Collision

CIRRUS LOGIC PRODUCT DATASHEET

119

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