User's Manual

PHS8-US Hardware Interface Overview
2.2 PHS8-US System Overview
18
PHS8-US_HIO_v01.000 Page 18 of 40 2012-01-06
Confidential / Released
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2.2 PHS8-US System Overview
Figure 1: PHS8-US system overview
USB
Serial
ASC0
UICC
Analog
audio
Power
supply
RTC
IGT,
Emergency Off
Net state/
status
SIM
Card
Host Application
Controller
On/Off
Module
Application
PSU
or
UMTS
diversity antenna
Power for Application
(VEXT)
Power Indication
(PWR_IND)
Modem Interface
Digital
audio
PCM or I2S
Codec
GSM/UMTS
GPS
GPS antenna
LCI
Low current
indication
GSM/UMTS-
antenna
Wake-
up
Host Wakeup
GPS
active antenna supply,
current limiter
Power
Supply
Application