Nokia Mobile Phones NSE-5 Series Service Manual page 57

PAMS
Technical Documentation
Name
62 MIC2N
63 MIC2P
64 MIC1N
Pin Symbol
1 RSSI
2 ICHAR
3 MODE_SEL
4 VR3/RAM_bck O
5 CNTVR3
6 CNTVR2
7 CNTVR5
8 VBAT
9 VR2
10 GROUND
11 VR5
12 VBAT
13 VREF
14 GROUND
15 VR4
16 VBAT
17 CNTVR4
18 TXPWR
19 VR7BASE
20 VR7
Issue 1 07/99
Table 11. COBBA_GJP pin list
Type
I Second negative high impedance input for micro-
phone.
I Second positive high impedance input for micro-
phone.
I Negative high impedance input for microphone.
Table 12. CCONT 3V Pin assignment
Type State In Reset
I
I
I High Z / GND
0V/2.8V
I High Z
I High Z
I High Z
P
O High Z
P
O High Z
P
O 1.244/1.5V
P
O High Z
P
I High Z
I High Z
O High Z
O High Z
System Module
(continued)
Description
Description
Receive Signal Strength Indica-
tor
V(ICHAR) Voltage input
Mode select High Z=normal
mode
GND=RAM_Bck
VR3 regulator output/RAM
backup
Control VR3 regulator
Control VR2 regulator
Control VR5 regulator
Unregulated supply voltage
(RF)
VR2 regulator output
(RF)
VR5 regulator output
Unregulated supply voltage
(RF)
Reference voltage output
(RF)
VR4 regulator output
Unregulated supply voltage
(RF)
Control VR4 regulator
Control VR7 regulator
(CNTVR7)
VR7 regulator base current
VR7 regulator output
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NSE–5