PT2257 查看數據表（PDF） - Princeton Technology

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PT2257

Electronic Volume Controller IC

Princeton Technology 

Tel: 886-2-66296288

Fax: 886-2-29174598

URL: http://www.princeton.com.tw

Electronic Volume Controller IC

PT2257

INTERFACE PROTOCOL

The interface protocol consists of the following:

• A Start bit

• A Chip Address Byte=88H

• ACK=Acknowledge bit

• A Data byte

• A Stop bit

Please refer to the diagram below:

PT2257 Address

MSB First Byte

LSB MSB

LSB MSB

LSB

START 1 0 0 0 1 0 0 0 ACK

DATA

ACK

DATA

ACK

DATA TRANSMITTED (N-BYTES+ACKNOWLEDGE)

STOP

Notes:

1. ACK=ACKNOWLEDGE

2. MAX. CLOCK SPEED=100K BITS/S

PT2257 V1.4

-6-

May, 2008

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