LG KG225, Service Manual

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3. TECHNICAL BRIEF
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SKY77328 PAM Pin Configuration-20-Pin
Leadless (Top View)
Figure 6. Typical Case Makings
Table 4. SKY77328 Pin Names and Signal Descriptions
Pin Mame Description
1 BS Band Select
2 VCC1A VCC (to GSM 1st stage, DCS/PCS 1st stages, BiCMOS PAC)
3 DCS/PCS IN RF input 1710-1910 MHz (DCS1800, PCS1900)
4 GND IN RF input 824-915 MHz (GSM850/900)
5 GND RF and DC Ground
6 VCC1B RF and DC Ground
7 GND RF and DC Ground
8 GND RF and DC Ground
9 GND RF and DC Ground
10 GND RF and DC Ground
11 GSM OUT RF Output 824-915 MHz (GSM850/900)
12 GND RF and DC Ground
13 GND RF and DC Ground
14 GND RF and DC Ground
15 DCS/PCS OUT RF Output 1710-1910 MHz (DCS 1800, PCS1900)
17 VBATT Battery input to high side of intemal sense resistor
18 ENABLE BiCMOS Enable
19 RSVD(GND) RF and DC Ground
20 VAPC Power Control Bias Voltage
GMD PAD(21) GND Ground Pad, bottom