User Guide

PAMS Technical Documentation System Module
NSB-5
Issue 1 03/01 Nokia Mobile Phones Ltd. Page 11
8 Yes XMIC Analog
audio input
(from
accessory
to phone)
2.0
100
2.2
1
kΩ
Ω
V
p-p
Input AC impedance
Accessory source AC impedance
Maximum signal level
Headset
micro-
phone
input (from
accessory
to phone)
2.0
100
2.5
2.2
600
200
kΩ
kΩ
µA
mV
p-p
Input AC impedance
Headset source AC impedance
Bias current
Maximum signal level
Accessory
mute. Volt-
age com-
pared to
SGND.
(from
phone to
accessory)
2.5
0
1.6 2.0
2.9
1.55
2.4
V
V
V
Not muted
Muted, without headset
Comparator reference in accessory
Headset
detection
(from
accessory
to phone)
(NO TAG)
1.47
0
49
2.9
1.33
V
V
kΩ
No headset (ref SGND)
Headset connected (ref SGND)
Pull-up resistor to VBB in phone
Function
DLR-3
Datacable
Detection
440 733 mV DLR-3 detected (ref SGND)
9 Yes SGND Audio sig-
nal ground.
Separated
from
phone GND
(from
phone to
accessory)
-0.2
-5
47
10
380
100
+0.2
+5
Ω
µF
Ω
kΩ
V
V
Output AC impedance (ref GND)
Series output capacitance
Resistance to phone ground (DC)
(in phone)
Resistance to accessory ground (in
accessory)
DC voltage compared to phone
GND
DC voltage compared to accessory
GND
Table 3: System/IBI connector
Pin
IB-
pin
NAME Function Min Typ Max Unit Description