System Connector X

Nokia Premicell Tfe Rs232

Technical Documentation System Module

Accessory Connector

Pin: Name: Description:

1

RS_RX

Serial RX (Receive data for serial communication)

• "1"; min/max 2.4...3.2 V

2

RS_TX

Serial TX (Transmit data for serial communication)

• "1"; min/max 2.4...3.2 V

3

SCK_RTS

Serial Clock (Serial Clock for synchronous communication /RS RTS)

• "1"; min/max 2.4...3.2 V

4

WDDIS

• "0"; min/max 0...0.6 V Watchdog disable, Flash mode

• "1"; min/max 2.4...7.15 V, Normal mode

5

PCMDCLK

Audio Clock (512 kHz) clock for audio data

• "1"; min/max 2.4...3.2 V

6

MBUS

Serial control bus (General Purpose Control and Test Control Bus)

• "1"; min/max 2.4...3.2 V

7

VPP

Programming Voltage (Programming voltage is applied before entering the programming state)

• inactive; min/max 0...3.2 V

8

DBUS_RXD

DBUS Interface (Receive data for DAI)

• "1"; min/max 2.4...3.2 V

9

DBUS_TXD

DBUS Interface (Transmit data for DAI)

• "1"; min/max 2.4...3.2 V

10

PCMSCLK

Audio Clock (8 kHz slot clock for audio data)

• "1"; min/max 2.4...3.2 V

11

VL

Logic Supply Voltage (3 V Logic voltage) • typical; 3.2 V

12

• "1"; min/max 2.4...3.2 V

13

• Pull-up on base band "1"; min/max 2.4...3.2 V

System Module Technical Documentation

14 /

VBATT

Battery supply voltage • min/max 6.45...7.15 V

15

DGND

Digital ground

16

RS_CTS

RS232 (Handshake signal for RS-232 serial interface)

17

• inactive; min/max 2.4...3.2 V

18

AGND

Analog ground

19

XMIC_ID

External Microphone Input (Audio in e.g. service handset)

• typical 200 mV

20

XEAR_DSR

External Speaker (Audio out e.g. service handset)

+1 0

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