1. RS-232 Introduction H.C. Tsou 10/31/2003

2. BENQ Confidential (yyyy/mm/dd)  2003, BENQ Corporation

3. Serial Communication Synchronous –I2C SCL (Clock), SDA(Data) Asynchronous –RS-232 TXD(Transmit Data), RXD(Receive Data)

4. Hardware

5. BENQ Confidential (yyyy/mm/dd)  2003, BENQ Corporation W/PS2 Cable (I) 50.J0510.5D1(Except PB7 Series)

6. BENQ Confidential (yyyy/mm/dd)  2003, BENQ Corporation W/PS2 Cable (II) 50.J5019.501 (PB7 Series)

7. BENQ Confidential (yyyy/mm/dd)  2003, BENQ Corporation W/ D-Sub Cable Download Board (PB2 & PB6100)

8. BENQ Confidential (yyyy/mm/dd)  2003, BENQ Corporation Accessory W/ PS2 connector –PS2 Male to D-SUB 9 Pin Male Cable W/ D-SUB Connector –PS2 Male to D-SUB 9 Pin Male Cable x1 –D-SUB Male to D-SUB Male Cable x2 –Download Board (12V to 3.3V)

9. Protocol

10. BENQ Confidential (yyyy/mm/dd)  2003, BENQ Corporation RS232 Format Data Format –Communicate Rate: 115200,19200…bps –Bit Length:8 –Parity bit :none –Stop Bit :1

11. BENQ Confidential (yyyy/mm/dd)  2003, BENQ Corporation Function About RS232 Download Firmware –Baud Rate:115200bps –Pixelworks Download Program Software OSD Control –Baud Rate:19200bps –VB Interface Program