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Sony CMD-J16 specifications Accessory Interface, Connector layout

Models: CMD-J16

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2.8 Accessory Interface

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

Pins

GND Charge GEN

Power

RX

TX

ACC

RS232 RS232

Audio

Audio AGND

 

 

 

 

 

 

 

 

 

I/O

OUT

(IN)

(OUT)

ID

RTS CTS

Out

IN

 

1

2

3

4

5

6

7

8

9

10

11

12

Charger

√

√

 

 

 

 

 

 

 

 

 

 

Connector layout

Connector view from base of phone

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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 1kΩ 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).

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Sony CMD-J16 specifications Accessory Interface, Connector layout
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CMD-J16 specifications

The Sony CMD-J16, released in the late 1990s, exemplifies the innovative spirit of mobile communication technology during that era. This compact mobile phone showcased advanced features for its time, appealing to tech enthusiasts and casual users alike.

One of the standout characteristics of the CMD-J16 is its sleek design. Weighing in at just 113 grams and measuring 135 x 52 x 21 mm, this phone was incredibly portable. The device sported a monochrome display, which supported a resolution of 101 x 32 pixels, offering a simple yet functional interface for users to navigate. Its intuitive button layout made dialing and text input a straightforward process.

In terms of connectivity, the CMD-J16 operated on GSM technology, which was becoming increasingly popular worldwide. This allowed users to enjoy reliable voice calls and text messaging services. The device supported dual-band GSM, which provided increased coverage and versatility for international travelers.

The phone was equipped with several features that made it user-friendly. One such feature was the integrated phonebook, capable of storing up to 250 contacts. Each contact could hold multiple phone numbers and even a fax number, making it easy for users to manage their communication needs. The CMD-J16 also supported SMS messaging, allowing users to send and receive text messages seamlessly.

Another notable aspect of the CMD-J16 is its long-lasting battery life. The phone housed a NiMH battery, which offered up to 100 hours of standby time and up to 4 hours of talk time, ensuring users could stay connected for extended periods without frequent recharging.

The phone also came with a range of personalization options. Users could select from various ringtones, including polyphonic options, to customize their experience. The device allowed for basic games, adding a touch of entertainment during idle moments.

In summary, the Sony CMD-J16 was a remarkable mobile phone that combined practicality with style. Its compact design, user-friendly features, and reliable performance made it a popular choice among consumers in the late 90s. While it may now be considered a relic in the rapidly evolving world of mobile technology, the CMD-J16 remains a testament to Sony’s commitment to innovation and quality in the telecommunications landscape.