Tait TP9100 - Page 69

TP9100 Service Manual Circuit Descriptions 69
© Tait Electronics Limited May 2005
Figure 3.7 Block diagram of the interfaces circuitry
Power
Supply
+7V5 BATT
AGND
+7V5 SW
+3V0 AN
+3V3
CODEC
and
Audio
Digital
FPI CDC TEMP
FPI CDC MANDOWN
ACC AUD TAP IN
CDC AUD TAP OUT
ACC MIC AUD
ACC CDC PTT
DIG FPI LE
DIG FPI CD
DIG FPI COL1-4
DIG FPI ROW1-4
DIG MUX ADC
ACC DIG RXD
DIG ACC TXD
SUI DIG 16POSN1-4
SUI DIG 3POSN1-2
SUI DIG PTT
SUI DIG EMERG
SUI DIG FUNC1
RF
Signal Types:
analog
clock
digital
asynchronous serial data
synchronous serial data
Battery
Pins
Accessory
Connector
Front-
Panel
Interface
Connector
BATT DATA
+7V5 BATT
+3V3
+7V5 LINK
Current-
Limited
Supply
CDC SUI SPK+
CDC SUI SPK–
Internal
Speaker
Pins
CDC ACC SPK+
CDC ACC SPK–
ACC+SPKR
ACC–SPKR
PTT Key
Emergency
Key
Function
Key 1
SUI DIG FUNC2
16-Posn.
Switch
3-Posn.
Switch
ACC PWR
ESD
Filters
EMC/
ESD
Filters
AUD TAP IN
AUD TAP OUT
ACC MIC
ACC PTT
ESD
Filters
ACC DIG GPI1-2
DIG ACC GPO1-2
I/O
Combine
ACC GPIO1-2
ACC RXD
ACC TXD
FPI CDC MANDOWN
FPI CDC TEMP
EMC
Filters
DIG FPI SPI CLK
DIG FPI SPI DO
DIG FPI SPI CLK
DIG FPI SPI DO
DIG FPI LE
DIG FPI CD
DIG FPI COL1-4
DIG FPI ROW1-4
DIG MUX ADC
DIG FPI BL
FPI BL+
LED 1
(red)
LED 2
(green)
LED 1
(red)
DIG SUI LED1
ESD/
EMC
Filters
DIG BATT DATA
DIG SUI LED2
Volume
Pot
On/Off
Switch
SUI VOL DC
Function
Key 2
AGND
DIG DSP SYS RST
DIG DSP SYS RST
Interfaces