Block Diagram (Base Unit); Circuit Operation (Base Unit); Outline - Panasonic KX-TC2100BXB Service Manual

KX-TC2100BXB / KX-TC2100BXS / KX-TC2100BXT / KX-TC2100BXW

14 CIRCUIT OPERATION (BASE UNIT)

14.1. Outline

Base unit consists of the following ICs as shown in BLOCK DIAGRAM (BASE UNIT) (P.31).
• CPU: IC201
− Controlling the whole system
− Forming/analyzing all data signals (ACK, CMD signal etc.)
− All interfaces (ex: LED, Detector Circuit (Charge/ Power Down))
• RF IC: IC401
− PLL Oscillator
− Detection
− Compress/ Expander
− 1st/2nd mixer
− Amplifier for transmission and reception
− DC 5.5V regulator
− Reset Circuit
• Additionally,
− Power Supply Circuit
− Charge Circuit
− Telephone Line Interface Circuit
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