The LC72717PW is a data demodulation LSI for receiving FM multiplex broadcasts for mobile reception in the DARC format. This LSI includes an on-chip bandpass filter for extracting the DARC signal from the FM baseband signal. It also supports ITU-R recommended FM multiplex frame structures (methods A, A’, B, and C) and can implement a compact, multifunction DARC reception system. The LC72717PW’s package, pin assignment and electrical characteristics are same as the LC72715PW (VICS-LSI). Functionally, the LC72717PW is a product that VICS function is removed from the LC72715PW. The LC72717PW is also control-compatible with the LC72711LW. Note that a contract with the NHK Engineering System, Inc. may be required to produce DARC compatible products in case, please contact with the NHK Engineering System, Inc.
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Features |
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Adjustment-free 76 kHz SCF bandpass filter
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Supports all FM multiplex frame structures under CPU control.
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MSK delay detection system based on a 1T delay.
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Error correction function based on a 2T delay (in the MSK detection stage)
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Digital PLL based clock regeneration function
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Shift-register 1T and 2T delay circuits
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Block and frame synchronization detection circuits
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Functions for setting the number of allowable BIC errors and the number of synchronization protection operations.
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Error correction using (272, 190) codes
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Built-in layer 4 CRC code checking circuit
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On-chip frame memory and memory control circuit for vertical correction
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7.2 MHz crystal oscillator circuit
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Two power saving modes : STNBY and EC STOP
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Applications can use either a parallel CPU interface (DMA) or a 'computer control bus' serial interface.
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Supply voltage : 2.7 V to 3.6 V
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