AMX TXC16 Plus User Manual download pdf (Page 48)

10 Hook Hook Signal

11 NC Not Connected

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

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)

Nokia 2110

+-----------------------------------------+

| 16 15 14 13 12 11 10 9 |

| ANT o o o o o o o o Charge |

| (O) [ ] (o) |

| o o o o o o o o |

| 8 7 6 5 4 3 2 1 |

+-----------------------------------------+

Pin Name Description

1 GND Digital ground

2 MIC/JCONN

External audio input from accessories or handsfree microphone.

Multiplexed with junction box connection control signal

3 AGND Analogue ground for accessories

4 TDA Transmitted DBUS data to the accessories

5 M2BUS

Serial Bidirectional data and control between the handportable and

accessories

1 ... 47 48 49 ... 81

No comments

AMX TXC16 Plus User Manual Page 48