Intermec CK31 - Page 163

Appendix A — Specifications
146 CK31 Handheld Computer User’s Manual
Pin Assignments for the Serial Port
Pin Signal Name
I/O to
Terminal Description
1 GND Ground
2 VCC_EXT (5V) O External 5V @ 500 mA maximum output
3 TXD O RS-232 TXD
4 RTS O RS-232 RTS
5 DTR O RS-232 DTR
6 RXD I RS-232 RXD
7 CD I RS-232 DCD (ActiveSync wakeup)
8 CTS I RS-232 CTS
9 DSR I RS-232 DSR
10 VIDEO I DBP from tethered undecoded scanner
11 SOS I Start of scan from tethered undecoded scanner
12 TETH_SCAN I
Active low input used to indicate an external
scanner connection
13 GND Ground
14 GND Ground
15 TRIGGER I Trigger input from tethered undecoded scanner
16 LASEN O Laser enable output to tethered undecoded scanner
17 BEEP O Beep output to tethered undecoded scanner
18 GOODREAD O Good Read output to tethered undecoded scanner
19 VBUS I USB Wake-up (5V power from USB host)
20 UDC- I/O USB DATA – (Client)
21 UDC+ I/O USB DATA + (Client)
22 TX+ O Ethernet TPETXP
23 TX- O Ethernet TPETXN
24 RX+ I Ethernet TPERXP
25 RX- I Ethernet TPERXN
26 GND Ground