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AC75 Hardware Interface Description
Strictly confidential / Preliminary
Feature
Pulse counter
DAC output
Phonebook
Evaluation kit
DSB75
2.2
AC75 System Overview
Antenna
Interface
USB
1x
9 x
GPIO
GPIO
Pulse
SPI
Counter
USB
SPI
Host
Slave
Slave
AC75_HD_V00.202
Implementation
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.
Digital-to-Analog Converter which can provide a PWM signal.
SIM and phone
DSB75 Evaluation Board designed to test and type approve
Siemens cellular engines and provide a sample configuration for
application engineering.
Antenna
Diagnostic
Application Interface
2
I
C
ASC0
ASC1
SIM
(modem)
UART
2
I
C
User Application
Figure 1: AC75 system overview
Page 19 of 120
AC75
Digital
Analog
Charge
Audio
Audio
Audio
Codec
Headphones
or Headsets
s
DAC
Power
Supply
Charging
circuit
Charger
27.04.2006
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