VSC8140 查看數據表（PDF） - Vitesse Semiconductor

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VSC8140

2.48832Gb/s 16:1 SONET/SDH Transceiver with Integrated Clock Generator

Vitesse Semiconductor 

VITESSE

SEMICONDUCTOR CORPORATION

2.48832Gb/s 16:1 SONET/SDH

Transceiver with Integrated Clock Generator

AC Characteristics

Figure 18: Transmitter Parallel Data Timing Waveforms

TXCLK16I+

Parallel Data Clock Input

TXIN[0:15]+, TXPRTYIN

Parallel Data Inputs

tTXDSU tTXDH

Valid Data 1

Valid Data 2

TXCLK16O+

Parallel Data Clock Output

= don’t care

Data Sheet

VSC8140

Figure 19: Transmitter Serial Data and Clock Phase Timing

tDH

TXOUT+

Differential Serial Data Output

TXCLKO+

Differential Clock Output

D15

D14

MSB

tPD

D13

Time

D1

D0

LSB

NOTE: Bit 15 (MSB) is transmitted first, Bit 0 (LSB) is transmitted last.

Figure 20: Transmitter Parity Timing

TXCLK16I+

Parallel Data Clock Input

PARERR+

Data Valid Output

tD

tDV

tD

Page 14

© VITESSE SEMICONDUCTOR CORPORATION

741 Calle Plano, Camarillo, CA 93012 • 805/388-3700 • FAX: 805/987-5896

G52251-0, Rev. 4.0

9/6/00

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