Pinout
+-----------------------------------------+
| 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
|
| 6 |
HOOK/RXD2 |
Hook indication. HP has a 100KE pull-up resistor
|
| 7 |
PHFS/TXD2 |
Handsfree device power on/off, data to flash programming device
|
| 8 |
VCHAR |
Battery charging voltage
|
| 9 |
GND |
Digital ground
|
| 10 |
EAR/HFPWR |
External Audio output to accessories or handsfree speaker
|
| 11 |
DSYNC |
DBUS data bit sync clock
|
| 12 |
RDA |
DBUS recieved data from the accessories
|
| 13 |
BENA |
Power supply to headset adapter
|
| 14 |
VF |
Programming voltage for FLASH
|
| 15 |
DCLK |
DBUS data clock
|
| 16 |
VCHAR |
Battery charging voltage
|
Contributions
Sources