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7.1.2 THE BASE-BAND INTEGRATED CIRCUIT
(BBIC)
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The PMB6723 (IC1) is a CMOS device designed to handle all the audio, signal and data processing
needed in a DECT handset. It contains a "burst mode controller" which takes care of DECT specific
physical layer and radio sectioncontrol. 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 (IC3) via a data/address/control bus. It connects to the
EEPROM (IC2) via a serial interface (SDA and SDC). This serial interface is also used during
manufacture and service to connect toan external computer.
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http://202.224.189.179/view_new/OT/KX-TCD725RUM/SVC/s0701020000.html13.10.2007 10:16:47
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