Appendix A: Port Pinouts
Snap Modules Connectors
Psion Omnii Hand-Held Computer User Manual
A-4
A.2
Snap Modules Connectors
•
Model ST4000
(Charger only variant): power and charge.
•
Model ST4001
(USB Host/Client variant): power, charge, communications via USB 1.1/2.0 Host and
USB 2.0 Client connectors, DC IN port.
•
Model ST4005
(DE9M Serial variant): powered DE9M serial connector, power, charge, serial communi-
cations. Pin 9 is reserved for 5V 1A max power out and is defaulted to
off
.
The following are the pin assignments of the interfaces.
Table A.2
Snap Modules Connectors Pinout
ST4001
ST4005
USB Micro B Connector
USB Type A Connector
DE9M Serial Connector
Pin #
Signal
Pin #
Signal
Pin #
Signal
1
VBus 1
VBus 1
DCD
2
D-
2
D-
2
RXD
3
D+
3
D+
3
TXD
4
ID
4
GROUND
4
DTR
5
GROUND
5
SHIELD
5
GROUND
6
SHIELD
6
DSR
7
RTS
8
CTS
9
5Vdc 1A power out
ST4001
ST4005
USB Type A connector
USB Micro B connector
(USB host)
(USB device/ActiveSync)
Powered DE9M serial port
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