Display And Keyboard; Camera; Introduction - Nokia RH-27 Series Technical Documentation Manual

CCS Technical Documentation
microphone; MIC2 input is used for headsets (HDB-4). MIC3 input is used for the Univer-
sal Headset. Every microphone input can have either a differential or single ended AC
connection to UEM circuit. In RH-27, the internal microphone MIC1 and external micro-
phone MIC2 for Tomahawk accessory detection are both differential. However, the Uni-
versal Headset interface is single-ended. The microphone signals from different sources
are connected to separate inputs at UEM. Inputs for the microphone signals are differen-
tial type. Also, MICB1 is used for MIC1 and MICB2 is used for MIC2 and MIC3 (Universal
Headset).

Display and Keyboard

LEDs are used for LCD and keypad illumination in RH-27. There are three LEDs for the
LCD and eight LEDs for the keypad. The signal use to drive the LED driver for the LCD and
keyboard is KLIGHT.
Color LCD is used in RH-27. Interface is using 9-bit data transfer. The interface is quite
similar to DCT3-type interface, except Command/Data information is transferred
together with the data. D/C bit set during each transmitted byte.

Camera

Introduction

This section describes the tests of the camera module part of baseband. All the other
tests are described in Lancelot BaseBand Test Specification.
Issue 1 11/2003 Confidential
©2003 Nokia Corporation
Troubleshooting - Baseband
RH-27
Page 21