CS8952(2001) Просмотр технического описания (PDF) - Cirrus Logic

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производитель

CS8952
(Rev.:2001)

CrystalLAN™ 100BASE-X and 10BASE-T Transceiver

Cirrus Logic 

CS8952

10BASE-T MII TRANSMIT TIMING

Parameter

Symbol

Min

Typ

Max

Unit

TXD[3:0] Setup to TX_CLK High

tSU1

10

-

-

ns

TX_ER Setup to TX_CLK High

tSU2

10

-

-

ns

TX_EN Setup to TX_CLK High

tSU3

10

-

-

ns

TXD[3:0] Hold after TX_CLK High

tHD1

0

-

-

ns

TX_ER Hold after TX_CLK High

tHD2

0

-

-

ns

TX_EN Hold after TX_CLK High

tHD3

0

-

-

ns

TX_EN “high” to CRS asserted latency

tCRS1

0

-

4

BT

TX_EN “low” to CRS de-asserted latency

tCRS2

0

-

16

BT

TX_EN “high” to TX+/- output (TX Latency)

tLAT

6

-

14

BT

SQE Timing

COL (SQE) Delay after CRS de-asserted

COL (SQE) Pulse Duration

tCOL

0.65

0.9

tCOLP

0.65

1.0

1.6

µs

1.6

µs

TX_CLK

tSU3

TX_EN

tSU2

TX_ER

tSU1

TXD[3:0]

CRS

TX+/-

10BASE-T Transmit Timing

tHD3

tHD2

tHD1

tCRS1

tLAT

Valid

Data

TX_CLK

SQE Timing

COL

tSQE

tSQEP

tCRS2

Input/Output

Input

Input

Input

Output

Output

Input/Output

Output

14

CrystalLAN™ 100BASE-X and 10BASE-T Transceiver

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