Specifications

AC65/AC75 Hardware Interface Description

2.1 Key Features at a Glance

AC65_AC75_HD_v01.002 Page 22 of 117 2006-10-30

Confidential / Released

Interfaces

2 serial interfaces ASC0:

8-wire modem interface with status and control lines, unbalanced,

asynchronous

Fixed bit rates: 300 bps to 460,800 bps

Autobauding: 1,200 bps to 460,800 bps

RTS0/CTS0 and XON/XOFF flow control.

Multiplex ability according to GSM 07.10 Multiplexer Protocol.

ASC1:

4-wire, unbalanced asynchronous interface

Fixed bit rates: 300 bps to 460,800 bps

RTS1/CTS1 and software XON/XOFF flow control

USB Supports a USB 2.0 Full Speed (12Mbit/s) slave interface.

C bus for 7-bit addressing and transmission rates up to 400kbps. Programma-

ble with AT^SSPI command.

Alternatively, all pins of the I²C interface are configurable as SPI.

SPI Serial Peripheral Interface for transmission rates up to 6.5 Mbps.

Programmable with AT^SSPI command.

If the SPI is active the I²C interface is not available.

Audio 2 analog interfaces (2 microphone inputs and 2 headphone outputs with micro-

phone power supply)

1 digital interface (PCM)

SIM interface Supported SIM cards: 3V, 1.8V

Antenna • 50Ohms. External antenna can be connected via antenna connector.

• Antenna diagnostic

Module interface 80-pin board-to-board connector

Power on/off, Reset

Power on/off Switch-on by hardware pin IGT

Switch-off by AT command (AT^SMSO)

Automatic switch-off in case of critical temperature and voltage conditions.

Reset Orderly shutdown and reset by AT command

Emergency reset by hardware pin EMERG_RST and IGT.

Special features

Charging Supports management of rechargeable Lithium Ion and Lithium Polymer batter-

ies

Real time clock Timer functions via AT commands

GPIO 10 I/O pins of the application interface programmable as GPIO.

Programming is done via AT commands.

Alternatively, GPIO pin10 is configurable as pulse counter.

Pulse counter Pulse counter for measuring pulse rates from 0 to 1000 pulses per second.

If the pulse counter is active the GPIO10 pin is not available.

Feature Implementation