Panasonic KX-TCD715GM Service Manual ▷ View online
25
KX-TCD715GM
26
KX-TCD715GM
27
KX-TCD715GM
6 CIRCUIT OPERATION (BASE UNIT)
BLOCK DIAGRAM BASEBAND SECTION AND LINE INTERFACE (BASE UNIT)
6.1.
THE BASE-BAND SECTION
6.1.1.
INTRODUCTION (SEE Fig. 17)
The base-band section consists of a base-band integrated circuit (BBIC), a Flash PROM and an EEPROM.
6.1.2.
THE BASE-BAND INTEGRATED CIRCUIT (BBIC)
The CICB00001367 (PMB5737 : IC6) is a CMOS device designed to handle all the audio, signal and data processing needed
in a DECT base unit. It contains a "burst mode controller" which takes care of DECT specific physical layer and radio section
control. It also contains an ADPCM codec filter used for speech encoding and decoding in the DSP section, a general purpose
microcontroller, various other ADC´s, DAC´s, timers and power control circuitry.
in a DECT base unit. It contains a "burst mode controller" which takes care of DECT specific physical layer and radio section
control. It also contains an ADPCM codec filter used for speech encoding and decoding in the DSP section, a general purpose
microcontroller, various other ADC´s, DAC´s, timers and power control circuitry.
The BBIC interfaces to its external PROM (IC5) via a data/address/control bus. It connects to the EEPROM (IC9) via a serial
interface, and a second serial interface is used during manufacture and service to connect to an external computer.
interface, and a second serial interface is used during manufacture and service to connect to an external computer.
28
KX-TCD715GM
Click on the first or last page to see other KX-TCD715GM service manuals if exist.