Nokia 16xx, 3110, 8110 mobile phones connector

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full pinout

12 pin NOKIA mobile special connector pin-out & layout

12 pin NOKIA mobile special connector  at the cellular phone

PinNameDescription
1GNDCharger/System Ground
2V_OUTAccessory Output Supply. (3.4V...10V - 50mA)
3XMICExternal Microphone Input and Accessory Identification
4EXT_RFExternal RF Control Input
5TXFBUS Transmit (N/C in 1610?)
6MBUSSerial Control Bus
7BENANot Connected
8SGNDSignal Ground
9XEARExternal Speaker and Mute Control
10HookHook Signal
11RXFBUS Receive (N/C in 1610?)
12V_INCharging Supply Voltage (Max 16V)

XMIC: External Microphone Input and Accessory Identification

U lowU highDescription
1.15 V1.4 VCompact Handsfree Unit Connected
1.7 V2.05Headset Adapter Connected
2.22 V2.56 VInfra Red Link Conneceted

EXT_RF: External RF Control Input

U lowU highDescription
0.0 V0.5 VExternal RF in use
2.4 V3.2 VInternal Antenna in use

MBUS: Serial Control Bus

U lowU highDescription
0.0 V0.5 VLogic Low Level
2.4 V3.2 VLogic High Level

XEAR: External Speaker and Mute Control

U lowU highDescription
0.0 V0.5 VMute ON (HF Speaker Mute)
1.0 V1.7 VMute OFF (HF Speaker Active)

Hook: Hook Signal

U lowU highDescription
0.0 V0.5 VHook Off (Handset in Use)
2.4 V3.2 VHook On (Handset in Use)

Nokia 1100, 2300, 2600 connector

Nokia 2100, 3610, 5210, 8210, 8250, 8290, 8850, 8855, 8890 mobile phones connector