
DSB75 Development Support Board Rev. B1 Hardware Description
Strictly confidential / Released
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DSB75_hd_v08 Page 16 of 94 29.09.2005
2.2 System Overview
Antenna
or GSM
tester
ASC0
2 LEDs
for I2C
COM1COM2
PC
COM2 (RS-232C)
COM1 (RS-232C)
Lab
Power
Supply
9V...15V
I2C device
Measurement
equipment
Ignition
Emergency
restart
Handset
SIM
card
Plug-in
charger
LED
DSB On
Battery
ASC1
Power supply
Battery connector
Lumberg
RF
RF
RF cable
Audio
interface 1
Audio interface 2
or charging interface
DSB75
SMA
RF
DAI
interface
Digital audio
measurement
equipment
or codec
X100
S421
S420
X101,X102
X511
X505
X506
X503
X502
V430
X602
X400
X401
X202
X703
X700
or X701
V503, V504
X201
B2B
+
-
ASC2
COM3
COM3 (RS-232C)
X205
Debug interface
X110
USB B
USB A
USB device
Card
holder
SD
card
X301
Card
holder
LED
module On
V431
or
SPI1/2 device
X510
I2C
EEPROM
8 LEDs
for GPIOs
V242 - V243,
V450 - V455
80 Test points
GSM
module
Relay box
COM4
Remote control
RF
Flex
cable
(option)
GSM
module
alternative module connection
RF cable
D500
X120, X121, X203,
X405, X410, X411,
X420, X421, X500,
X710
Jumper
I2C
SPI
X501
ORGA
SIM test
SIM test
12 LEDs
for ASC0,
ASC1
V230 - V241
Figure 1: System overview
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