User`s manual

ENDAT-D2550 USERS MANUAL

UNICORN COMPUTER CORP.

CN8, CN2, CN6: COM4 ~COM6 port Box Headers (2x5 with 2.54mm)

Pin No. Function Pin No. Function

1 DCD 6 DSR

2 RXD 7 RTS

3 TXD 8 CTS

4 DTR 9 RI

5 GND 10 N.C.

LPT1, LTP2: Printer Port Box Header (2x13 with 2.0mm)

Pin No. Description Pin No. Description

1 STB# 10 ACK#

2 PD0 11 BUSY

3 PD1 12 PE

4 PD2 13 SLCT

5 PD3 14 AFD#

6 PD4 15 ERR#

7 PD5 16 INIT#

8 PD6 17 SLIN#

9 PD7 18-25 GND

J1: PS/2 Keyboard / Mouse Header (2x5 with 2.54mm)

Pin No. Signal (KB) Pin No. Signal (MS)

1 KB Data 2 MS Data

3 KEY 4 KEY

5 GND 6 GND

7 +5V(DC) 8 +5V(DC)

9 KB_CLK 10 MS_CLK

JKBMS1: External PS/2 Device Header (2x7 with 2.0mm)

Pin No. Signal (KB) Pin No. Signal (MS)

1 MS Data Out 2 KB Data Out

3 MS Data In 4 KB Data In

5 MS CLK Out 6 KB CLK Out

7 MS CLK In 8 KB CLK In

9 KEY 10 KEY

11 +5V(DC) 12 +5V(DC)

13 GND 14 GND