VSC837UG 查看數據表（PDF） - Vitesse Semiconductor

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VSC837UG

3.2Gb/s 68x68 Crosspoint Switch

Vitesse Semiconductor 

VITESSE

SEMICONDUCTOR CORPORATION

Preliminary Data Sheet

VSC837

3.2Gb/s

68x68 Crosspoint Switch

Figure 4: Serial Mode (leave ALE_SCN pin LOW during programming)

INCHAN0_SDIN

INCHAN1_SCLK

SDOUT

LOAD

CSB

CONFIG

SERIAL

O6 O5 O4 O3 O2 O1 O0 I6 I5 I4 I3 I2 I1 I0

tsSDIN

thSDIN

tperSCLK

tsLOAD

tdsDOUT

O6 O5 O4 O3

thLOAD

tsCSB

thCSB

tpwCFG

tsSERIAL

O(n) = Output Address Bit (n), I(n) = Input Address Bit (n)

ALE_SCN

thSCAN

INCHAN1_SCLK

SDOUT

SERIAL

tsSERIAL

Figure 5: Serial Read-Back

tsSCAN

tperSCLK

tdsDOUT

68 68 68 68 68 68 68 67 67 67 67 67 67 67 66

B6 B5 B4 B3 B2 B1 B0 B6 B5 B4 B3 B2 B1 B0 B6

MSB of program memory for output 68

Read-back shift register (483 bits long) is loaded here

on rising edge of INCHAN1_SCLK with SERIAL HIGH

and ALE_SCN LOW

G52309-0, Rev 3.0

02/16/01

© VITESSE SEMICONDUCTOR CORPORATION • 741 Calle Plano • Camarillo, CA 93012

Tel: (800) VITESSE • FAX: (805) 987-5896 • Email: prodinfo@vitesse.com

Internet: www.vitesse.com

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