LC7874E datasheet(1/22 Pages) SANYO

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CMOS LSI

Ordering number : EN5521

13097HA(OT) No. 5521-1/22

SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters

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

CD Graphics Decorder

LC7874E

Overview

The LC7874E is a CMOS LSI that provides the signal

processing needed for compact disc graphics (CD-G) on a

single chip. The LC7874E accepts subcode R to W

signals output from a CD player DSP LC786X Series,

LC7862XE Series, or LC7863XE Series device, and

performs de-interleaving, error detection and correction,

graphic instruction processing, and image processing.

Features

• A CD-G decoder can be configured using a three-chip

combination of this LSI—the LC7874E—with external

RAM (64K

× 4 bits) and an LC78010E digital RGB

encoder.

• Performs insertion and protection of CD subcode R to

W sync signals and detection of R to W signal de-

interleave error signals.

• Has two crystal oscillators, for NTSC and PAL, with

simple switchover by means of a control pin.

Connecting a crystal resonator of 14.31818 MHz for

NTSC and 17.734476 MHz for PAL enables the

standard clock and other necessary timings to be

generated internally.

• Performs CD graphics instruction processing and

drawing functions, and controls image display.

• Has microcomputer interface functions, allowing set

upgrading.

• Provides superimposition support.

• Has a color bar signal output function.

• DRAM interface and RGB output and sync signal output

are 3-state outputs.

Package Dimensions

unit: mm

3159-QFP64E

SANYO: QIP64E

[LC7874E]

• 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.

Parameter

Symbol

Conditions

Ratings

Unit

Power supply voltage

VDD

VSS – 0.3 to VSS + 7.0

V

S1, S2, SFSY, PW, SBSY, CE, DI, CL, MUTE, DB0 to 3,

Input voltage

VIN

CB, CE1, CE2, CE3, LINE, HRESET, VRESET, INIT,

VSS – 0.3 to VDD + 0.3

V

RESET, N/P, SON, XIN1, XIN2

SBCK, DO, CDGM, WE, RAS, A0 to 7, DB0 to 3, CAS, OE,

Output voltage

VOUT

ROUT0 to 3, GOUT0 to 3, BOUT0 to 3, HSYNC, CSYNC,

VSS – 0.3 to VDD +0 .3

V

BLANK, YS, 4FSCO, EFLG, FSCO, XOUT1, XOUT2

Allowable power dissipation

Pd max

Ta = 25°C

500

mW

Operating temperature

Topr

–30 to +85

°C

Storage temperature

Tstg

–40 to +125

°C

Specifications

Electrical Characteristics at Ta = –30°C to +85°C

Số phần tương tự - LC7874E

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