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Developer Board and Interfaces Description
3.5.5
AC Adapter Detection Circuit
The g20 charger module includes a detection logic circuit for detecting charger presence and type. The detection circuit is inter-
nal to the g20 module. However, the Developer Board does contain the necessary routing from the g20 UUT to the AC adapter
connector.
Two g20 signals are used for this detection:
• CHRG_TYP: ADC signal for charger type detection
• CHRG_SW: Charger rate control
These detection signals are present to provide compatibility with the phone. They may be removed in future versions.
34
Table 26. Keypad Functions (Continued)
Pad Reference
Function
S817
8
S811
9
S809
0
S810
Star (*)
S815
Pound (#)
S814
Send
S813
End
S819
Menu
S822
Right
S823
Left
S818
Up
S816
Down
S812
Soft Right
S808
Soft Left
Alternate
TUV
WXYZ
+
On/Off
98-08901C67-O
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