NPL-1
3 - Audio System
PAMS Technical Documentation
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8
XMIC
2.0
2.2
k
Ω
Input AC impedance
1
Vpp
Maximum signal level
0
1.55
V
Mute (output DC level)
2.5
2.9
V
Unmute (output DC level)
100
600
µ
A
Bias current from UEM
2
Vpp
Microphone signal (Gain 0 dB)
Connected to UEM MIC3P + MIC2P input
9
SGND
330
Ω
Resistance to phone ground, return path
for XMIC. When the DLR-3 datacable is
connected, SGND swhiches to be a supply
line for the cable (2.8V)
10
XEAR
47
Ω
Output AC impedance (ref. LGND)
10
µ
F
Series output capacitance
16
300
Ω
Load AC impedance to GND (Headset) pin
#14
4.7
10
k
Ω
Load AC impedance to GND (Accessory)
pin #14
1.0
Vpp
Maximum output level (no load)
6.8
k
Ω
Load DC resistance to GND (Accessory)
pin #14
16
1500
Ω
Load DC resistance to GND (Headset) pin
#14
2.78
2.8
2.86
V
DC voltage (47k pull-up to Vflash1)
HEAR
0
14
220
mV
Earphone signal
Connected to UEM HF output
11
MBUS
0
2.0
0.8
2.8
V
Serial bi-directional control bus.
Baud rate 9600 Bit/s
Phone has 4.7k
Ω
pull up resistor in UEM
12
FBUS_R
X
0
2.0
0.8
2.8
V
Fbus receive. Serial Data
Baud rate 9.6k-230.4kBit/s
Phone has 220k
Ω
pull down resistor
13
FBUS_TX
0.1
1.7
0.8
2.8
V
Fbus transmit. Serial Data
Baud rate 9.6k-230.4kBit/s
Phone has 47k
Ω
pull up resistor in UEM
14
L-GND
0
0
V
Supply ground
7DEOH
System connector pin assignment
Pin
Name
Min
Typ
Max
Unit
Notes
Summary of Contents for 6310I - Cell Phone - GSM
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