Nokia RM-497 User Manual

Figure 47 D2800 Baseband ASIC (BCM21351) Keypad Interface Pins
Electrical Interface Between Baseband and Backlight and Illumination
Introduction
The D2800 JUNO (BCM21351) BB ASIC uses its’ GPIO and GPEN pins to control the backlight and illumination.
GPIO17 is used to enable the N2301 LED driver and GPEN9 is used to enable the keypad light.
RM-497
System Module
Page 5 – 34 COMPANY CONFIDENTIAL Issue 1
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Nokia RM-497 Specifications

General

Brand	Nokia
Model	RM-497
Category	Handhelds
Language	English