PI74LPT646R Просмотр технического описания (PDF) - Pericom Semiconductor

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PI74LPT646R

Fast CMOS 3.3V 8-bit registered transceiver

Pericom Semiconductor 

PI74LPT646

PI74LPT652

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REAL-TIME TRANSFER

BUS B TO A

REAL-TIME TRANSFER

BUS A TO B

BUS

A

BUS

B

BUS

A

BUS

B

LPT646 DIR G CPAB CPBA SAB SBA

LL X

X

X

L

LPT652 GAB GBA CPAB CPBA SAB SBA

LL X

X

X

L

STORAGE FROM

A AND/OR B

BUS

A

BUS

B

LPT646 DIR G CPAB CPBA SAB SBA

HL X

X

L

X

LPT652 GAB GBA CPAB CPBA SAB SBA

HH X

X

L

X

TRANSFER STORES

DATA TO A AND/OR B

BUS

A

BUS

B

LPT646 DIR G CPAB CPBA SAB SBA

HL ↑

X

X

X

LL X

↑

X

X

XH ↑

↑

X

X

LPT652 GAB GBA CPAB CPBA SAB SBA

XH ↑

X

X

X

LX X

↑

X

X

LH ↑

↑

X

X

LPT646(1) DIR G CPAB CPBA SAB SBA

L L X H or L X

H

H L H or L X

H

X

LPT652 GAB GBA CPAB CPBA SAB SBA

H L H or L H or L H

H

1. Note: The LPT646 cannot transfer data to

A bus and B bus simultaneously.

3

PS2064A 01/15/97

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