
Hardware
Rev 2 Jun.16
19
4118903
The CF3 GPIO configuration can be modified as described in
Figure 2-7: GPIO Configuration
Note: CF3 pin 43 (EXT_GPS_LNA_EN) is not currently available for use by IoT Expansion Card #2.
Table 2-4: CF3 GPIO Interface Configuration Changes
Change type
Change effect
Method
Change duration
Jumper
•
Off—Connect
GPIO2 to GPIO
expander NINT
signal
•
Off—Not connected
Install a jumper on CN900 to
connect GPIO2 to NINT
Remains in effect until
jumper is added or removed.
Debug Connector (CN601)
Debug Connector (CN601)
Debug Connector (CN601)
Debug Connector (CN601)
Debug Connector (CN601)
Debug Connector (CN602)
Debug Connector (CN602)
Debug Connector (CN602)
Debug Connector (CN602)
Debug Connector (CN602)
Debug Connector (CN602)
Debug Connector (CN602)
Debug Connector (CN602)
Main CF3
GPIO2
GPIO42
GPIO33
GPIO13
GPIO8
GPI25
GPIO7
GPIO22
GPIO24
GPIO23
GPIO21
EXT_GPS_LNA_EN
GPIO32
IoT Connector #0
(CN1000, slot IOT0)
IoT Connector #1
(CN1001, slot IOT1)
IoT Connector #2
(CN1002, slot IOT2)
GPIO1
GPIO2
GPIO3
GPIO4
GPIO1
GPIO2
GPIO3
GPIO4
GPIO1
GPIO2
GPIO3
GPIO4
GPIO Expander
(U906)
CN900
NINT