Sony CMD-J5/J16 Benutzerhandbuch

 

 
 

2.8 Accessory Interface  

 

The table explains what kind of pins the phone supplies to the different accessories. 
 

Pins 

 GND 

 

Charge 

 

GEN 

I/O 

Power 

OUT 

RX 

(IN) 

TX 

(OUT) 

ACC 

ID 

RS232 

RTS 

RS232 

CTS 

Audio  

Out 

Audio 

 IN 

AGND 

 

Charger 

√ 

√ 

 

 

 

 

 

 

 

 

 

 

 
 

 

 
 
 
 
 
 
 

The connector comprises the following pins: 

 
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 1k

Ω 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). 

Connector view from base of phone 

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