Overview

The LC72705E is a data demodulation IC for receiving

FM multiplex broadcasts for mobile receivers in the

DARC format. This IC includes a decoder circuit that

performs the required VICS processing, and, in

conjunction with a bandpass filter IC (either the

LV3400M or the LV3403M), can form a compact yet

high-functionality VICS reception system. Note that a

contract with VICS Center is required to evaluate this IC

and to produce end products that support VICS.

Applications

• Receivers for DARC format mobile receiver FM

multiplex broadcasts

Functions

• MSK delay detection circuit based on a 1T delay

• Error correction function based on a 2T delay (in the

MSK detector stage)

• Digital PLL based Clock regeneration circuit

• Shift-register type 1T and 2T delay circuits

• Block and frame synchronization detection circuit

• Function for setting the number of allowable BIC errors,

the number of synchronization protection states

• Error correction using (272, 190) codes

• Layer 4 CRC code checking circuit

• On-chip frame memory and memory control circuit for

vertical correction

• 7.2-MHz crystal oscillator circuit

• VICS decoder circuit

Package Dimensions

unit: mm

3148-QFP44MA

CMOS IC

51198RM (OT) No. 5744-1/14

SANYO: QFP44MA

[LC72705E]

SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters

TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN

FM Multiplex Receiver IC for VICS Systems

LC72705E

Ordering number : EN5744

• CCB is a trademark of SANYO ELECTRIC CO., LTD.

• CCB is SANYO’s original bus format and all the bus

addresses are controlled by SANYO.