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Block Diagram
The following is the block diagram of the evaluation board:
The interconnections of all major components, switches, connectors, LED's and other
important parts of the board are presented here.
J120
RS232 Connector
DATA RS232
Level Shifter
U123
DATA TTL
Registration
Status
MMCX Antenna
Connector
iO1500R
J121
USB
Connector
USB DATA
DATA MONITORING
Data Pins 24-30
RED LED pin 6
GREEN LED pin 7
J1
30 Pin
ZIF
Connector
Page 6 of 8
3.8 VDC
S8
SB9600
3.8VDC
S1
Ignition
Ignition pin 14
S6 MOD
MOD pin13
Opt Sel_1, pin18
Opt Sel_1, pin17
Audio Out pin 19
Audio
Amplifier
S9
Audio Volume
Attenuation
Amplifier
Mic In pin 21
P1
DC Power
Connector
Fuse F1
Power Supply
Direct
U
: 6 to 16.5 VDC
in
U
: 3.8 VDC
out
Jumper P60
S3
PTT
Fuse F2
S4
Power SW
S5
Mode select
3.8VDC
P61
Speaker
Connector
J80
Headset
Mic
J122
Mic In
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