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12 pin Nokia 8110 cell phone proprietary of Nokia 16xx, 3110, 8110 cell phones cable connector connector layout
12 pin Nokia 8110 cell phone proprietary connector
at the cellular phone
Pinout compatibility:
  • Nokia 1600
  • Nokia 3110
  • Nokia 8110
full pinout
Pin Name Description
1 GND Charger/System Ground
2 V_OUT Accessory Output Supply. (3.4V...10V - 50mA)
3 XMIC External Microphone Input and Accessory Identification
4 EXT_RF External RF Control Input
5 TX FBUS Transmit (N/C in 1610?)
6 MBUS Serial Control Bus
7 BENA Not Connected
8 SGND Signal Ground
9 XEAR External Speaker and Mute Control
10 Hook Hook Signal
11 RX FBUS Receive (N/C in 1610?)
12 V_IN Charging Supply Voltage (Max 16V)

XMIC: External Microphone Input and Accessory Identification

U low U high Description
1.15 V 1.4 V Compact Handsfree Unit Connected
1.7 V 2.05 Headset Adapter Connected
2.22 V 2.56 V Infra Red Link Conneceted

EXT_RF: External RF Control Input

U low U high Description
0.0 V 0.5 V External RF in use
2.4 V 3.2 V Internal Antenna in use

MBUS: Serial Control Bus

U low U high Description
0.0 V 0.5 V Logic Low Level
2.4 V 3.2 V Logic High Level

XEAR: External Speaker and Mute Control

U low U high Description
0.0 V 0.5 V Mute ON (HF Speaker Mute)
1.0 V 1.7 V Mute OFF (HF Speaker Active)

Hook: Hook Signal

U low U high Description
0.0 V 0.5 V Hook Off (Handset in Use)
2.4 V 3.2 V Hook On (Handset in Use)
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