NSB-5
System Module
PAMS Technical Documentation
Page 42
Nokia Mobile Phones Ltd.
Issue 1 03/01
C2
VSA5
P
-
Negative analog power supply for
PCM ADC
AGND
D2
EARN
O
Float
Negative ear-piece output
To internal speaker
E2
VSA4
P
-
Negative analog power supply for
PCM DAC
AGND
F2
VREF
I
-
Reference voltage input (1.5V)
VREF from CCONT
G2
AFCOut
O
Float
Automatic frequency control out-
put
To 13MHz clock oscillator
H2
TxIOutN
O
Float
Negative in-phase transmit out-
put
To SUMMA
A3
MIC2N
I
Inp
Second negative high impedance
input for microphone
Analog input from slide micro-
phone
B3
MIC2P
I
Inp
Second positive high impedance
input for microphone
Analog input from slide micro-
phone
C3
VDA5
P
_
Positive analog power supply for
PCM ADC
VCOBBA from CCONT
D3
HFCM
O
Float
Common mode output for phone
external audio circuitry
Not used (floating)
E3
VDA4
P
-
Positive analog power supply for
PCM DAC
VCOBBA from CCONT
F3
TxQOutP
O
Float
Positive quadrature transmit out-
put
To SUMMA
G3
TxQOutN
O
Float
Negative quadrature transmit
output
To SUMMA
H3
TxIOutP
O
Float
Positive in-phase transmit output
To SUMMA
A4
MBIAS
O
Float
Bias output for microphone 2.1V
Bias output for microphone
2.1V
B4
VDD1
P
-
AudioCodec positive digital
power supply
VBB
C4
VSS1
P
-
AudioCodec negative digital
power supply
GND
D4
AUXOUT
O
Float
Auxiliary audio output or ABIAS
2.1V
Auxiliary audio output or ABIAS
2.1V
E4
VDA3
P
-
Positive analog power supply
VCOBBA from CCONT
F4
TxCOut
O
Float
Transmit power control output
Transmit power control output
– to SUMMA
G4
TxIPhsP
O
Float
Positive in-phase PHS transmit
output
Not used (floating)
H4
TxIPhsN
O
Float
Negative in-phase PHS transmit
output
Not used (floating)
A5
TEST
I
Inp
Test pin
GND