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Developer Board and Interfaces Description
3.4.5
Ignition
The Developer Board contains an on/off Dip switch, labeled IGN, that is connected to the g20 UUT ignition circuit. You can
use this Dip switch to turn on and off the g20.
3.4.6
Wakeup
The Developer Board includes a wakeup Dip switch, labeled WAKEUP, that toggles the g20 WAKEUP_IN_N signal.
Generally, your application wakes up the g20. In cases where the application is not ready for integration, you can force wakeup
of the g20 by turning on this Dip switch.
3.4.7
LEDs Logic and Control
The Developer Board includes LED indicators for critical signals. A 3.0V regulator powers the LEDs.
A Dip switch enables you to turn off all the LEDs on the Developer Board, for example, to reduce power consumption. The
Developer Board power on/off LED and the g20 on/off LED are always active and cannot be disabled.
3.4.8
SIM Card
The SIM card connector (J100) is external to the UUT, but is connected directly to it, similar to an internal SIM. The UUT can
accept 1.8V and 3V SIM cards.
Use the SIM card detect logic jumper (P110) to choose active-high or active-low detection configurations.
24
Table 18. SIM Connector Pinout (J100)
Pin
Description
1
Ground
2
Presence detect
3
Clock
4
Reset
5
VCC
6
Serial data I/O
7
VPP
8
Ground
Table 19. SIM Card Detect Logic Jumper (P110)
P110 Jumper
Position
1
2
3
•
•
Active-low
•
•
Active-high
Not active
Selected Mode
98-08901C67-O
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