User Manual

EHS6 Hardware Interface Overview
1.1 Key Features at a Glance
9
EHS6_HIO_v01.441 Page 8 of 38 2013-07-11
Confidential / Preliminary

Interfaces
Module interface Surface mount device with solderable connection pads (SMT application
interface). Land grid array (LGA) technology ensures high solder joint reli-
ability and provides the possibility to use an optional module mounting
socket.
For more information on how to integrate SMT modules see also [3]. This
application note comprises chapters on module mounting and application
layout issues as well as on additional SMT application development equip-
ment.
USB USB 2.0 High Speed (480Mbit/s) device interface, Full Speed (12Mbit/s)
compliant
2 serial interfaces ASC0 (shared with GPIO lines):
• 8-wire modem interface with status and control lines, unbalanced, asyn-
chronous
• Adjustable baud rates: 1,200bps to 921,600bps
• Autobauding: 1,200bps to 230,400bps
• Supports RTS0/CTS0 hardware flow control.
• Multiplex ability according to GSM 07.10 Multiplexer Protocol.
ASC1 (shared with GPIO lines):
• 4-wire, unbalanced asynchronous interface
• Adjustable baud rates: 1,200bps to 921,60bps
• Autobauding: 1,200bps to 230,400bps
• Supports RTS1/CTS1 hardware flow control
Audio 1 digital interface (PCM), shared with GPIO lines
UICC interface Supported SIM/USIM cards: 3V, 1.8V
GPIO interface 14 GPIO lines shared with ASC0 lines, LED signalling, PWM functionality,
fast shutdown and pulse counter
4 GPIO lines shared with PCM interface
4 GPIO lines shared with ASC1, SPI and HSIC interfaces
I
2
C interface Supports I
2
C serial interface
HSIC interface High-Speed Inter-Chip (HSIC) interface for USB chip-to-chip interconnect
including Link Power Management (LPM) lines shared with GPIO lines
SPI interface Serial peripheral interface, shared with GPIO lines
Antenna interface pads 50
Power on/off, Reset
Power on/off Switch-on by hardware signal ON and AUTO_ON
Switch-off by AT command
Switch off by hardware signal FST_SHDN instead of AT command
Automatic switch-off in case of critical temperature and voltage conditions
Reset Orderly shutdown and reset by AT command
Emergency reset by hardware signal EMERG_RST
Special features
Real time clock Timer functions via AT commands
Phonebook SIM and phone
TTY/CTM support Integrated CTM modem
Feature Implementation