Baseband External And Internal Signals And Connections; Internal Signals And Connections - Nokia NSB-9 Service Manual

CCS Technical Documentation

Baseband External and Internal Signals and Connections

This section describes the external and internal electrical connection and interface levels
on the baseband. Electrical interface specifications are collected into tables that covers a
connector or a defined interface.

Internal Signals and Connections

FM Radio
BB Signal
Signal
VFLASH2 VCC
VDIG
GenIO(3) FMClk
GenIO(8) FMWrEn
GenIO(11) FMCtrlClk
GenIO(12) FMCtrlDa
FMANT f
FM(ant)
FM_RADIO R VAFR
FM_RADIO L VAFL
Issue 1 04/03
Table 6: FM Radio Interface
Min Nom Max
2.7V 2.78 V 2.86V
6.0mA 8.4mA 10.5mA
3uA 6uA
2.7V 2.78V 2.86V
2.1mA 3.0mA 3.9mA
11uA 19uA 26uA
1.4V 1.8V 1.88V
0 0.4V
32kHz
1.4V 1.8V 1.88V
0V 0.4V
1.4V 1.8V 1.88V
0 0.4V
1.4V 1.8V 1.88V
0 0.4V
76MHz 108MHz
720mV 850mV 940mV
720mV 850mV 940mV
Nokia Corporation
System Module and User Interface
Condition Note
Analog supply voltage
Operational
Stand by
Digital supply voltage
Operational
Stand by
(bus enable
LOW)
High Reference clock for
Low FM radio module
Also 6.5MHz or
13MHz can be used
Frequency
High Write Enable
Low
High max. 1MHz
Low
High Bidirectional
Low
FM input frequency.
Headset used as an
antenna.
f =98MHz, FM-radio output sig-
RF
nal (right) to amplifier
V =1mV
RF
input
f =98MHz, FM-radio output sig-
RF
nal (left) to amplifier
V =1mV
RF
input
NSB-9
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