Sony CMD-Z28 service manual Accessory Interface, Connector comprises the following pins, Languages

2-6 Accessory Interface

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

GND

Charge

ACC_

Audio

Audio

ACC

ACC

TX

RX

AGND

RF

RF

Pins

power

IN

Out

ID

Detect

(OUT)

(IN)

GND

OUT

18

1/2

3

14

13

11

6

9

10

12

19/22

20

Travel charger

√

√

(QN-2TC)

I/O connector layout

Connector view from base of phone

1

17

2

18

The connector comprises the following pins:

Detection:

The detection of accessory is done by the charge pin and the detect pin.

Any accessory with an active charge will wake up the phone, indicating the battery icon but can not be operated.

The insertion and removal of the charger (Cigar Lighter Charger, Desktop-Charger, AC-Charger) is detected via polling. To reduce the power consumption the polling can take up to 5 sec.

The insertion and removal of other accessory is detected via an Interrupt. This detection is only possible when the phone is powered up.

ID:

The ID pin indicates what kind of accessory is connected.

2-7 RF Antenna Connector / Antenna Switch

To connect an external antenna for accessory use, the CMD-Z28 contains a stable RF connector with an integrated mechanical switch. This connector is placed on the I/O connector. The integrated mechanical switch switches between the helix antenna and the external RF antenna connection. The switching criterium is mechanical pressure from the RF accessory connector.

2-8 Languages

The CMD-Z28 supports the following languages:

•English

•Chinese (Simplified)

•Chinese (Traditional)

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