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Chapter 6: Omnii Expansion Ports and Connectors
100-Pin Multi-Function Connector
6.4.5.4 SPI (Serial Peripheral Interface)
The SPI (Serial Peripheral Interface) function of the expansion ports is not available on Omnii
XT10, but will be included in later models. Information is included here for future reference.
Table 6.14 Expansion Port SPI Pins
Pin Name
(n=Expansion Port #)
EXPn_MOSI_GPIO4
EXPn_MISO_GPIO5
EXPn_SCLK_GPIO6
EXPn_CS_N_GPIO7
These pins can be configured for two different functions: GPIO or SPI. To configure these pins for
SPI serial communication, configure the PinFunctions registry entry for the expansion device
accordingly (see Section 4.4.1: "Registry Settings for Expansion Devices")
6.5
100-Pin Multi-Function Connector
The 100-pin multi-function connector on the Omnii XT10 main logic board exposes an interface
for GPS modules. Future Omnii models will include interfaces for WWAN radios and other
expansion devices on this connector as well. In addition, standard expansion port 3 occupies some
of the pins on this connector – see Section 6.4.4 on page 98 for details on using this expansion
port.
Connector Details
Manufacturer:
Manufacturer Part Number:
Mating Connector:
Number of Pins:
Current Rating:
Figure 6.14 Diagram of SAMTEC 100-Pin Connector (Top View)
100
1 mm
102
Psion Teklogix Omnii HDK User Manual
Description
Master output/Slave input
Master input/Slave output
Serial clock
Chip select
1 mm
Expansion Port
1 & 2 Pin
17
16
15
14
SAMTEC
CLM-150-020-F-D-K
MW-50-03-G-D-150-065
100
1.5 A per pin
50.43 mm
Expansion Port 3 Pin
27
25
23
21
02
2.54 mm
01
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