User guide

WA_DEV_FEX20_UGD_002 Rev 004 March 08, 2011 66
Fastrack Xtend User Guide
Expansion Card
7.4.2.2. Mechanical Characteristics
Table 49. Mechanical Characteristics
PCB Dimensions
58mm x 35.7mm x 1mm
Overall Dimension
59.5 x 35.7 x 10.01mm (including connectors)
Weight
< 10 grams
Figure 37. 16-Way IO Expander Socket
Table 50. 16-Way IO Expander Description
Pin #
Pin Description
Pin #
Pin Description
1
Not Connected
9
GPIO26
2
Not Connected
10
AUX-DAC
3
Not Connected
11
AUX-ADC
4
Not Connected
12
SPI1-IO
5
Not Connected
13
SPI1-I
6
GPS Status Indicator
14
SPI1-CLK
7
GPIO27
15
SPI1-CS
8
Not Connected
16
GND
7.4.2.3. General Purpose Input/Output
The IO+GPS Expansion Card provide a total of 6 General Purpose I/Os and is only available if the
multiplexed counterpart is not used. These GPIOs can be used to control any external device such as
GPS, Bluetooth, LCD or other external customer applications.
Table 51. GPIOs Pin Description
Pin #
Signal
I/O
I/O Type
Reset State
Multiplexed With
7
GPIO27
I/O
Open Drain
Z
SDA
9
GPIO26
I/O
Open Drain
Z
SCL
12
GPIO29
I/O
2V8
Z
SPI1-IO
13
GPIO30
I/O
2V8
Z
SP1-I
14
GPIO28
I/O
2V8
Z
SPI1-CLK
15
GPIO31
I/O
2V8
Z
~SPI1-CS