User Guide

Pin #/ Signal
name
Signal
description
Spectral range Voltage/
Current levels
Max or
nominal serial
impedance
Notes
14 / HEAR R P Audio out 20-20k 1Vpp 22Ω Not conn. in
mono
VOUT electrical characteristics
Description Parameter Min Max Typical Unit Notes
Vout
regulator
for
external
accessories
VOUT 2.43 2.57 2.5 V Max load
90mA
USB/FBUS connections and electrical characteristics
The USB operates in the low-power bus-mode only. The USB host provides VBUS voltage (5V, 100mA at
maximum) to USB device.
Audio signal electrical characteristics
Description Parameter Typ Unit Notes
XMIC N Audio in 1 V
pp
DC Offset 2.5-2.78V
XMIC P Audio in 1 V
pp
DC Offset 2.5-2.78V
HSEAR N Audio out 1 V
pp
22Ω nominal serial
impedance
HSEAR P Audio out 1 V
pp
22Ω nominal serial
impedance
HSEAR R N Audio out 1 V
pp
22Ω nominal serial
impedance
Not connected in
mono
HSEAR R P Audio out 1 V
pp
22Ω nominal serial
impedance
Not connected in
mono
RM-198
System Module Nokia Customer Care
Issue 1 COMPANY CONFIDENTIAL Page 8 –19
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