PT2264L 데이터 시트보기 (PDF) - Princeton Technology

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PT2264L

Remote Control Encoder IC

Princeton Technology 

Remote Control Encoder IC

CODE WORD

Tel: 886-2-66296288

Fax: 886-2-29174598

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

PT2264

A group of Code Bits is called a Code Word. A Code Word consists of 12 AD bits followed by one Sync

Bit. The 12 AD bits are determined by the corresponding states of A0 ~ A7 and A8/D3 ~ A11/D0 pins at

the time of transmission. When Data Type of PT2264 is used, the address bits will decrease

accordingly.

For example: In the 4 Datas Type where the address has eight (8) bits, the transmitting format is:

8 Address Bits 4 Data Bits Sync. Bit

PT2264 / PT2294 have a maximum of twelve (12) Address Bits, four (4) Address/Data bits. The

following diagram shows the code bits with their corresponding pins.

First bit transmitted

↓

A0 A1 A2 A3 A4 A5 A6 A7 A8/D3 A9/D2 A10/D1 A11/D0 SYNC BIT

One Complete Code Word

0 Data A0 A1 A2 A3 A4 A5 A6 A7 A8 A9 A10 A11 Sync Bit

1 Data A0 A1 A2 A3 A4 A5 A6 A7 A8 A9 A10 D0 Sync Bit

2 Data A0 A1 A2 A3 A4 A5 A6 A7 A8 A9 D1 D0 Sync Bit

3 Data A0 A1 A2 A3 A4 A5 A6 A7 A8 D2 D1 D0 Sync Bit

4 Data A0 A1 A2 A3 A4 A5 A6 A7 D3 D2 D1 D0 Sync Bit

The Code Bits A0 ~ A7 and A8/D3 ~ A11/D0 are determined by the states of A0 ~ A7 and A8/D3 ~

A11/D0 pins. For example, when the A0 (Pin No. 1) is set to “1” (VCC), the Code Bit A0 is synthesized

as “1” bit. In the same manner, when it (A0 Pin) is set to “0” (VSS) or left floating, the Code Bit A0 is

synthesized as a “0” or “f” bit respectively.

PT2264 v1.0

-5-

June, 2004

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