Tait TM8100 mobiles Service Manual page 86

Figure 3.9 Block diagram of the power supply circuitry
SMPS
Power Supply
OR Gate
PSU
Super-
visor
Signal Types:
RF
analog
clock
digital
asynchronous serial data
synchronous serial data
86 Circuit Descriptions
+9V0
9 V
Regulator
3 V
+3V3
Regulator
2V5
Regulator
6V0
Regulator
IOP PWR SENSE
IGNITION SENSE
EMERGENCY
Hardware
Links
13V8 PWR
SENSE
13V8 Switch
Reverse
Polarity
Protection
+13V8 BATT
+9V0 TX
9 V Tx Switch
+9V0
+3V0 AN
+6V0
+13V8 BATT
+3V0 AN
+9V0
+3V3
+2V5 CDC
+3V0 AN
+3V0 RX
3 V Rx
Switch
DIG RX EN
DIG TX EN
DIG SLP EN
+3V3
DIG PSU LATCH
DIG WD KICK
PSU SYS RST
+3V3
AGND
CH ON OFF
ITF IOP GPIO7
AUX GPI3
AUX GPI2
+3V3
+13V8 SW
+13V8 BATT
TM8100/TM8200 Service Manual
© Tait Electronics Limited November 2007
Trans-
mitter
Frequency
Synthesizer
CODEC
and
Audio
Receiver
Digital
Board
Debug
Connector
Interface