Block Diagram Of The Interface Circuitry - Tait TM9100 Service Manual

Figure 3.9

Block diagram of the interface circuitry

+13V8 BATT
AGND
Power
Supply
+3V3
+13V8 SW
AUX GPI2
AUX GPI3
CH ON OFF
ITF IOP GPIO7
AUD ITF SPK+
AUD ITF SPK-
ITF VOL WIP DC
AGND
CODEC
ITF CH MIC AUD
and
CDC RX AUD
Audio ITF RX BEEP IN
CDCAUDTAP OUT
ITF AUD TAP IN
ITF AUX MIC AUD
CDC RSSI
ITF ON OFF
ITF CH RXD
DIG CH TXD
ITF CH HOOK
ITF CH PTT
ITF CH GPI1
DIG CH GPO1
ITF CH SPI DI
DIG CH SPI DO
DIG CH SPI CLK
DIG CH LE
Digital
Board
ITF IOP GPIO1-6
ITF IOP GPIO7
ITF IOP RXD
DIG IOP TXD
ITF AUX RXD
DIG AUX TXD
ITF AUX GPI1
ITF AUX GPI2
ITF AUX GPI3
DGND
ITF AUX GPI4-7
DIG AUX GPO4-7
Debug
AGND
Connector
Frequency
AGND
Synthesizer
Receiver
AGND
and
Transmitter
TM9100 Service Manual
© Tait Electronics Limited August 2005
Interface
PTT and
Hookswitch
Decode
I/O
Combine
+3V3 CL
+3V3
Clamp
I/O
Combine
and
Pull-up
Resistors
+5V
5 V
Regulator
Signal Types:
RF digital
analog asynchronous serial data
synchronous serial data
clock
+13V8 BATT
AGND
SPK+
SPK–
+13V8 BATT
EMC
+3V3
Filters
AGND
DGND
SPK+
EMC
SPK–
Filters
VOL WIP DC
CH MIC AUD
RX AUD
ESD and
EMC
Filters
CH ON OFF
CH RXD
CH TXD
CH PTT
ESD and
EMC
CH GPIO1
Filters
CH SPI DI
CH SPI DO
EMC
CH SPI CLK
Filters
CH LE
RX AUD
RX BEEP IN
AUD TAP OUT
AUD TAP IN
AUX MIC AUD
RSSI
+13V8 SW
IOP GPIO1-6
IOP GPIO7
Clamps
IOP RXD
and
IOP TXD
Pull-up
AGND
Resistors
DGND
AUX RXD
AUX TXD
AUX GPI1
AUX GPI2
AUX GPI3
AGND
+13V8 SW
Clamps,
ESD
Filters,
AUX GPIO4-7
and
EMC
Filters
AUD TAP OUT
AUD TAP IN
AUX MIC AUD
RSSI
Circuit Descriptions
Power
Connector
Control-
Head
Connector
Internal
Options
Connector
Auxiliary
Connector
87