User's Manual

AC65/AC75 Hardware Interface Description
Confidential / Preliminary
s
AC65/AC75_hd_v00.372 Page 20 of 118 2006-08-03
Feature Implementation
Firmware update Generic update from host application over ASC0, ASC1 or USB.
Over-the-air (OTA) firmware update is possible via SPI interface.
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.
I
2
C I
2
C bus for 7-bit addressing and transmission rates up to 400kbps.
Programmable 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 microphone 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 batteries
Real time clock Timer functions via AT commands