Tait TB7100 - Page 34

34 Functional Description TB7100 Installation and Operation Manual
© Tait Electronics Limited December 2005
Figure 3.6 UI board block diagram
Receiver
Module
+13V8
+3V3
SpeakerAudio
Volume Level (DC)
Rx SPI Data
Rx Prog Data
Receiver
SPI Shift
Registers
+13V8
+3V3
Transmitter
SPI Shift
Registers
Transmitter
Module
Electronic
Switching
Rx SPI Data
Rx Prog Data
Speaker
Function
Keys and
LEDs
Volume
Control
Power
LED
Busy
LED
Tx
LED
LCD
Tx/Rx
Switch
Prog/Mic
Connector
Fan
Connector
+13V8
PTT
MicAudio
Fan Power
Board
Fan Power
+3V3
UI Board