Tait TM9100 Service Manual

TM9100 Service Manual Circuit Descriptions 91
© Tait Electronics Limited August 2005
Figure 3.11 Block diagram of the control-head board
On/Off
Keypad
Volume
Potentio-
meter
LCD
LCD Loom
LCD
Connector
Function
Key and
Status LEDs
Keypad
Backlighting
LEDs
Main
Keypad
LED
Lenses
On/Off Key
Function/
Scroll/
Selection
Keys
Contact made
when key
pressed
Light Pipes
Control-
Head
Options
Connector
Microphone
Connector
+13.8V
MIC RXD
MICTXD
MIC GPIO1
MIC PTT
MIC RXAUD
MICAUD IN
Protection
Circuitry
+3V3 +13V8
COL
ROW
BRIGHT
BRIGHT
HEATER
BACKLIGHT
+3V3
Analog/
Digital
Converter
Speaker
Connector
ASYNC UART
JTAG
+3V3
Soldering
Pads
AGND
DGND
Concealed
Microphone
Speaker
MIC–
MIC+
AGND
Power
Supply
+3V3+1V5
+1V5
+3V3
+13V8
CH RXD
CHTXD
CH GPIO1
CH PTT
CH ON OFF
+13V8
SPK+
SPK–
SPK–
SPK+
Speaker Leads
Microphone
Leads
DGND
AGND
CH SPI DO
+3V3 SENSE
+13V8
CH ON OFF
VOLWIP DC
RESET
AGND
AGND
Power
Switches
TEMP SENSOR
CH RXAUD
CH MICAUD
Boot
Flash
BIRDIE
FPGA CLOCK
System
Clock
SRAM
CONTROL
ADDRESS
DATA
Flash
Memory
Control-
Head
Connector
Control-Head Board
DEBUG
FPGA JTAG Signals:
FPGA JTAGTCK
FPGA JTAGTMS
FPGA JTAGTDO
JTAG FPGATDI
RESET
CONTROL
DISPLAY CONTROL
Constant-
Current
Drivers
WATCHDOG TRIGGER
POWER ON/OFF SENSE
BRIGHT
BRIGHT
ENABLE
HEATER
BACKLIGHT
Contact made
when key
pressed
Signal Types:
analog
clock
digital
asynchronous
serial data
synchronous
serial data
FPGA
Microphone
Pre-amplifier
andAudio
Switching

Tait TM9100 Specifications

General

Brand	Tait
Model	TM9100
Category	Radio
Language	English