Read Panasonic KX-TDA0155CE Service Manual Supplement online
8
KX-TDA0155CE
4.2.1.6.
Power Supply Circuit
PAV3.3V, RF2.5V, 3.2V, 1.8V, RF1.8V, 1.5V and 5.25V are generated in CS.
5.5V is output of DC/DC Convertor. Other power supplies are made from 5.25V.
PAV3.3V and RF2.5V are the power supply for RF block. 3.2V is the power supply for logic circuit.
1.5V is used as the power supply of FPGA internal core. 1.8V, RF1.8V is the power supply for BBIC.
5.5V is output of DC/DC Convertor. Other power supplies are made from 5.25V.
PAV3.3V and RF2.5V are the power supply for RF block. 3.2V is the power supply for logic circuit.
1.5V is used as the power supply of FPGA internal core. 1.8V, RF1.8V is the power supply for BBIC.
4.2.1.6.1.
Input Filter, Diode Bridge
Input filter for noise rejection and diode bridge for misconnection protection.
4.2.1.6.2.
DC/DC Start Up Control Circuit
This circuit controls the DC/DC converter for prompt return from the power interruption start-up.
And when the power supply is low voltage, This circuit controls ON/OFF of the DC/DC converter by DIPSW(SW100)
And when the power supply is low voltage, This circuit controls ON/OFF of the DC/DC converter by DIPSW(SW100)
4.2.1.6.3.
DC/DC Converter Circuit
Generate 5.25V from DC40V power supply.
4.2.1.6.4.
Power Back Up Circuit
All power supply is backed up by the electric double layer capacitor.
4.2.1.7.
Clock Circuit
Two kinds of clock are used in CS.
4.2.1.7.1.
BBIC Clock
10.368MHz crystal oscillator is used.
4.2.1.7.2.
DPITS I/F GA Clock
16.384MHz crystal oscillator is used. It is used for Reference Clock of DPITS I/F GA.
4.2.1.8.
Reset Circuit
It is reset by the signal from Power on Reset or CPU. The reset from Reset IC(IC105) is reset by CPU, and DPITS I/F GA and
FPGA are reset by the port output from CPU.
FPGA are reset by the port output from CPU.
Click on the first or last page to see other KX-TDA0155CE service manuals if exist.