User Guide

NPM-10 (3595)
System Module CC Technical Documentation
Page 8 ©2004 Nokia Corporation Confidential Issue 2 03/2004
Internal Signals and Connections
The following tables describe internal signals. The signal names can be found on the
schematic for the EN9 PWB.
Audio
Table 5: RF Regulators
Signal Min Nom Max Note
VR1A 4.6 V 4.75 V 4.9 V I
max
= 10 mA
VR2 2.70 V
3.20 V
2.78 V
3.3 V
2.86 V
3.40 V
I
max
= 100 mA
VR3 2.70 V 2.78 V 2.86 V I
max
= 20 mA
VR4 2.70 V 2.78 V 2.86 V Not used
VR5 2.70 V 2.78 V 2.86 V I
max
= 50 mA
I
Sleep
= 0.1 mA
VR6 2.70 V 2.78 V 2.86 V I
max
= 50 mA
I
Sleep
= 0.1 mA
VR7 2.70 V 2.78 V 2.86 V I
max
= 45 mA
Table 6: Current sources
Signal Min Nom Max Note
IPA1 and IPA2 0 mA - 5 mA Not used
Table 7: Internal Microphone
Signal Min Nom Max Condition Note
MIC1P (Differential input P) - - 100 mV
pp
G=20 dB 1kΩ to MIC1B
(RC filtered by
470 R/22 uF)
MIC1N (Differential input N) - - 100 mV
pp
G=20 dB 1kΩ to GND
MIC1B (Microphone Bias) 2.0 V 2.1 V 2.25 V DC
External loading of MICB1 - - 600 uA DC