AMX TXC16 Plus User Manual download pdf (Page 50)

50

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)

Nokia 5110/6110

(at the cellular phone)

NOKIA SPECIAL at the cellular phone.

Pin Description

1 VIN CHARGER INPUT VOLTAGE 8.4V 0.8A

2 CHRG CTRL CHARGER CONTROL PWM 32Khz

3 XMIC MIC INPUT 60mV - 1V

4 SGND SIGNAL GROUND

5 XEAR EAR OUTPUT 80mV - 1V

6 MBUS 9600 B/S

7 FBUS_RX 9.6 - 230.4 KB/S

8 FBUS_TX 9.6 - 230.4 KB/S

9 L_GND CHARGER / LOGIC GND

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