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12 pin cell phone proprietary connector layout
12 pin cell phone proprietary connector
for data/flash cable only
PINS

1

GND

2

Charge

3

GEN I/O

4

PWR OUT

5

RX (IN)

6

TX (OUT)

7

ACC ID

8

RS232 RTS

9

RS232 CTS

10

Audio Out

11

Audio IN

12

AGND

CHARGER X X                    

Pinout may be reversed.

 

Audio

Audio In, Audio Out and Audio GND:

Audio IN:

Is a single ended input with a maximum sensitivity of 365 mVrms.

Audio OUT:

The single ended output delivers 0.8Vpp into a 1kÙ load.

These two signals are referred to as AGND.

 

RS232 Interface

5-pin interface: RX, TX, RTS(RFR), CTS and Gen I/O(DTR or DCD):

This is the communication interface to the Data cable “QN-3RS/USB”.

Pin 3 is connected to a general IO pin on the baseband digital chip. The functionality can be assigned on an

accessory by accessory basis to be input, output or interrupt.

 

Charge

The Charge pin represents the positive contact for the charging funtionality.

 

GND

The Ground pin represents the digital interface and charger return current.

 

ID

This pin shows the presence of an accessory and is also an analog ID for the accessory. Accessories which

provide charger functionality only do not support this pin and their presence is detected with a valid charger

voltage.

 

Power Out

Power-out has a different functionality with different accessories.

In the car-kit environment the ext. Vbat indicates that a phone call is accepted/in progress. This information is used

by the car-kit to power up the audio section of the car-kit, mute the car stereo and keep the car-kit powered up

even when the ignition is switched off.

Due to the fact that the ID of the accessory is detected first, the ACC power is not current limited (protected).

According to 8 reports in our database (1 positive and 4 negative) this pinout may be incorrect.

Is this pinout
Source(s) of this and additional information: , http://www.eserviceinfo.com/downloadsm/2139/Sony_CMD-J5%20J16.html, Sony J7
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