Nokia Mobile Phones NSE-5 Series Service Manual page 22

NSE–5
System Module
Table 2. Mic signals of the system connector
MICN 0
NA
mouted
in slide
NA MICP 0
mounted
in slide
Pin IB- Name Function
pin
10 Yes XEAR Analog
audio out- aud
put
(from (from
phone to
accessory accessory
Accessory
de ec detection
(fom ac- (f
cessory to
phone) phone)
Page 2 – 8
2 12.5 mV
2 12.5 mV
Table 3. System/IBI connector
Min Typ Max
47
u
10
16 300
4.7 10
1.0
100
0.5
6.8
0 0.2
16 1500
2.8
47
Technical Documentation
Connected to COBBA_GJP MIC2N
input. The maximum value corre-
sponds to1 kHz, 0 dBmO network
level with input amplifier gain set to
32 dB. typical value is maximum
value – 16 dB.
Connected to COBBA_GJP MIC2P
input. The maximum value corre-
sponds to1 kHz, 0 dBmO network
level with input amplifier gain set to
32 dB. typical value is maximum
value – 16 dB.
Unit Description
Output AC impedance (ref.
GND) resistor tol. is 5%
mF
Series output capacitance
Load AC impedance to GND:
Headset
k Load AC impedance to
SGND: External accessory.
V Max. output level. No load
p–p
k Resistance to accessory
ground (in accessory)
V DC Voltage (ref. SGND). Ex-
ternal accessory
k Load DC resistance to
SGND. External accessory
V DC Voltage (ref. SGND).
Headset with closed switch
Load DC resistance to
SGND. Headset with closed
switch
V DC Voltage (ref. SGND). No
accessory, or headset with
open switch
k Pull–up resistor to VBB in
phone
PAMS
Issue 1 07/99