Psion Teklogix OMNii HDK XT10, Руководство пользователя

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Chapter 7: Docking Stations
Docking Station Expansion Module (X-Mod) Connector
110 Psion Teklogix Omnii HDK User Manual
7.2.4 Docking Station Expansion Module (X-Mod) Connector
Theory of Operation
The ST4002 and ST4003 desktop docking stations have an expansion module (X-Mod) connector
concealed under a plate in the bottom of the unit. In the ST4003 model, this connector is occupied
by an expansion module that provides the RS-232 and Ethernet ports. This module can be
removed and replaced with a custom expansion module if desired, but typically it is more sensible
to simply add the custom module to the ST4002 model.
A custom-built expansion module installed in the X-Mod connector should have an 845R resistor
connected to pin 20 on the header. This identifies the expansion module as a developer-created
device to the hand-held computer.
X-Mod Connector Details
For details on the X-Mod connector socket, and the specifications for designing a matching
header, see the files
114-24004-2011 2x10 connector on Xmod PCA (header).pdf and 124-21022-
201 2x10 connector on Main PCA (socket).pdf , included with the HDK.
Pinout
The 20-pin X-Mod connector has the following pinout:
Table 7.5 Pinout of 20-pin X-Mod Connector
Pin Signal Function I/O Type Voltage
(V ±5%)
1, 4, 5, 8,
9, 11, 12,
15, 16, 19 Digital Ground Ground Ground
2, 3 VIN_12V Power. 500 mA maximum Power 12.0
6, 7 VDD_5V Power. Turned on when the hand-held compu-
ter is connected. 500 mA maximum Power 5.0
10 VDDChargeMicro Power. Reference voltage. 10 mA maximum Power 3.3
13 USB_H1_D- USB Host port 1 D- I/O
14 U USB Host port 1 D+ I/O
17 USB_H2_D- USB Host port 2 D- I/O
18 U USB Host port 2 D+ I/O
20 XModDetect Connect to ground through 845R resistor on
expansion module PCB assembly. Identifies
module as custom-built to hand-held computer.