User's Manual

EHS5-E/EHS5-US Hardware Interface Overview
1.2 EHS5-E/EHS5-US System Overview
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EHS5_HIO_v01.000 Page 9 of 35 2012-11-14
Confidential / Preliminary
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1.2 EHS5-E/EHS5-US System Overview
Figure 1: EHS5-E/EHS5-US system overview
GPIO
interface
I2C
USB
ASC0
ASC1
CONTROL
RTC
POWER
ANTENNA
(GSM/UMTS
dual band)
Module
SIM interface
(with SIM detection)
SIM card
Application
Power supply
Backup supply
Emergency reset
ON, ON2
Serial interface
Serial modem
interface
I2C
GPIO
3
8
4
5
2
1
2
1
1
2
USB
Antenna
1
PCM
Digital audio
(PCM)
4
Status LED / GPIO
1
DAC (PWM) PWM / GPIO
2
Fast shutdown
Fast shutdown
1
1
ADC
ADC
1