Dc Connector; Slide Microphone; Slide Connector; Roller Interface - Nokia Mobile Phones NSE-5 Series Service Manual

PAMS
Technical Documentation
Pin Name
12 FBUS_RX
13 FBUS_TX
14 L_GND

DC Connector

The electrical specifications in NO TAG shows the idle voltage produced
by the acceptable chargers at the DC connector input. The absolute
maximum input voltage is 18V due to the transient suppressor that is
protecting the charger input.

Slide Microphone

The microphone is connected to the slide by means of springs it has a
microphone input level specified in NO TAG. The microphone requires
bias current to operate which is generated by the COBBA_GJP ASIC.

Slide Connector

An Interrupt signal to MAD2PR1 determines whether the slide is in an
open or closed position.

Roller Interface

A mechanical solution is implemented and three interrupts are fed to the
MAD2PR1

Keys and Keymatrix

0–9, *, #, send, end, soft_1, soft_2, power_on_off, roller_push,

Headset Connector

The external headset device is connected to the system connector, from
which the signals are routed to COBBA_GJP microphone inputs and
earphone outputs.
Issue 1 07/99
Table 1. System connector signals.
(continued)
Function
Bottom & IBI connectors Serial data in.
Bottom & IBI connectors Serial data out.
Bottom charger contacts Logic and charging ground.
NSE–5
System Module
Description
Page 2 – 7