VSC8151QV 查看數據表（PDF） - Vitesse Semiconductor

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VSC8151QV

2.488Gb/s SONET/SDH STS-48/STM-16 Section Terminator

Vitesse Semiconductor 

VITESSE

SEMICONDUCTOR CORPORATION

2.488Gb/s SONET/SDH

STS-48/STM-16 Section Terminator

Advance Product Information

VSC8151

Figure 10: Transmit Frame Pulse Timing Diagram

Transmitted

Frame bytes

E2

E2

E2

Payload bytes of Row 9

TXFPOUT

TB

TFPW

Table 9: Transmit Frame Pulse Timing

Parameter

TFPW

TB (OC-48)

TB(OC-12)

TB(OC-3)

Description

Transmit Frame Pulse Width

Transmitted Byte Cycle Time

Transmitted Byte Cycle Time

Transmitted Byte Cycle Time

Min

Typ

Max

—

51.2

—

—

3.2

—

—

12.8

—

—

51.2

—

Figure 11: On Chip Register File Access Port Timing Diagram

TXADDR[5:0]

Units

ns

ns

ns

ns

TXOHDATA[7:0]

TXOHWI

TXWRENA

TSU

TWE

TH

TCYC

Table 10: On Chip Register File Access Port Timing

Parameter

TSU

TH

TWE

TCYC

Description

Setup time for data/address

Hold time for data/address

Write enable low

Write cycle time

Min

Typ

50

—

50

—

50

—

375

—

Max

—

—

—

—

Units

ns

ns

ns

ns

Page 16

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G52225-0, Rev. 2.9

12/1/99

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