Chapter 6: Omnii Expansion Ports and Connectors
100-Pin Multi-Function Connector
102
Psion Teklogix Omnii HDK User Manual
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.
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:
SAMTEC
Manufacturer Part Number:
CLM-150-020-F-D-K
Mating Connector:
MW-50-03-G-D-150-065
Number of Pins:
100
Current Rating:
1.5 A per pin
Figure 6.14 Diagram of SAMTEC 100-Pin Connector (Top View)
Table 6.14 Expansion Port SPI Pins
Pin Name
(
n
=Expansion Port #)
Description
Expansion Port
1 & 2 Pin
Expansion Port 3 Pin
EXPn_MOSI_GPIO4
Master output/Slave input
17
27
EXPn_MISO_GPIO5
Master input/Slave output
16
25
EXPn_SCLK_GPIO6
Serial clock
15
23
EXPn_CS_N_GPIO7
Chip select
14
21
01
100
02
50.43 mm
1 mm
1 mm
2.54 mm
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