Baseband Section; Power Section; Diagram Of Power Section - Hytera PT580 Service Manual

Cartesian IC, TX VCO, RX VCO, pre-amplifier and other RX parts respectively. The V_PA is supplied by
the battery directly. The SYN control signal is open while the portable terminal is operating.

2. Baseband Section

2.1 Power Section

BATTERY
The 3V3D, 1V6D, 1V8D and 3V_TXCO are the necessary voltages for the MCU to start up. The MCU
may not start if any of the four voltages becomes invalid.
The 3V3D, 2V5D, 1V2D and 3V_TXCO are the necessary voltages for the FPGA to start up. The FPGA
may not start if any of the four voltages becomes invalid.
No. Network
1 VBAT
2 3V3D
3 1V8D
4 1V6D
5 2V5D
6 3V_TXCO
7 1V2D
TO RF PART
VBAT
U6001
V_PA
ON/OFF
Figure 7 Diagram of Power Section
Reference Voltage during Start-up (V)
Test Point
(while running Bootloader)
L6004_2
TP6001
TP6002
TP6003
TP6004
TP6005
TP6006
1V8D
1V6D
PMU
2V5D
3V_TXCO
Farad Battery
3.6～4.2
3.3
1.8
1.6
2.5
3
1.2
11
Service Manual
3V3D
3.3V_RF
TO RF PART
1V2D
LDO
Reference Voltage
after Start-up (V)
3.6～4.2
3.15
1.8
1.35
2.5
3
1.2