Sony Ericsson GM48 manual System Connector Interface, GM47, viewed from underneath

2. System Connector Interface

2.1 Overview

Electrical connections to the module (except the antenna), are made through the System Connector Interface. The system connector is a 60-pin, standard 0.05in (1.27mm) pitch device.

The system connector allows both board-to-board and board-to-cable connections to be made. Use a board-board connector to connect the module directly to a PCB, and a board-cable connector to connect the module via a cable.

Figure 2.1 below shows the numbering of the connector pins.

A ground connection is provided at the mounting hole next to the RF connector on the module as shown below. Connect this ground point to the DGND pins of the module by the shortest, low-impedance path possible. The purpose of this connection is to allow any ESD picked up by the antenna to bypass the module’s internal ground path.

Pin 59 Pin 1

Pin 60 Pin 2

Ground connection

Figure 2.1 GM47, viewed from underneath

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LZT 123 7263 R1C