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Nokia 31xx/81xx

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Nokia 31xx/81xx connector

PinSignalDescription
1GNDCharger/System Ground
2V_OUTAccessory Output Supply. (3.4V...10V - 50mA)
3XMICExternal Microphone Input and Accessory Identification
*1,7...2,05 V Headset Adapter Connected
*1,15...1,4 V Compact Handsfree Unit Connected *2.22...2.56 V Infra Red Link Conneceted
4EXT_RFExternal RF Control Input
*0...0.5V External RF in use
*2.4...3.2V Internal Antenna in use
5TXFBUS Transmit
6MBUSSerial Control Bus
*Logic Low Level: 0....0.5V
*Logic High Level:2.4V....3.2V
7BENANot Connected
8SGNDSignal Ground
9XEARExternal Speaker and Mute Control
Mute ON (HF SPEAKER MUTE ):0...0,5 V d.c.
Mute OFF (HF SPEAKER ACTIVE ): 1,0...1,7 V d.c.
10HookHook Signal
*Hook Off (Handset in Use): 0....0.5V
*Hook On (Handset in Use): 2.4V....3.2V
11RXFBUS Receive
12V_INCharging Supply Voltage (Max 16V)


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