Tait TP9100 Service Manual page 67

Figure 3.6 Block diagram of the power supply circuitry
3V3
+3V3
SMPS
Power
Supply
PSU
Supervisor
Signal Types:
analog
clock
digital
asynchronous
serial data
synchronous
serial data
TP9100 Service Manual
© Tait Electronics Limited May 2005
5 V 5 V
Regulator Regulator
5 V 5 V
Regulator Regulator
3 V
Regulator
2V5
Regulator
1V8
Regulator
1V5
SMPS
Power-up
Circuitry
+7V5 LINK
+7V5 BATT
+5V TX
+7V5 LINK
+5V AN
+3V3
+2V5 SYN
+3V0 AN
+7V5 LINK
+5V TX
+2V5 CDC
+3V3
+3V0 AN
+1V8
+7V5 SW
+3V0 AN
+3V0 RX
3 V RX
Switch
DIG RX EN
DIG 5V TX EN
DIG 5V AN EN
DIG 3V0 AN EN
+1V8
+1V5
+3V3
DIG WD KICK
PSU SYS RST
DIG PSU LATCH
+3V3
+3V0 AN
+7V5 SW
+3V3
+7V5 BATT
+7V5 LINK
AGND
Circuit Descriptions
Trans-
mitter
Frequency
Synthesizer
CODEC
and
Audio
Receiver
Digital
Debug
Connectors
Interfaces
67