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LC7874E Schematic ( PDF Datasheet ) - Sanyo Semicon Device

Teilenummer LC7874E
Beschreibung CD Graphics Decorder
Hersteller Sanyo Semicon Device
Logo Sanyo Semicon Device Logo 




Gesamt 22 Seiten
LC7874E Datasheet, Funktion
Ordering number : EN5521
CMOS LSI
LC7874E
CD Graphics Decorder
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
[LC7874E]
SANYO: QIP64E
• 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.
Specifications
Electrical Characteristics at Ta = –30°C to +85°C
Parameter
Power supply voltage
Input voltage
Output voltage
Allowable power dissipation
Operating temperature
Storage temperature
Symbol
VDD
VIN
VOUT
Pd max
Topr
Tstg
Conditions
Ratings
VDD
S1, S2, SFSY, PW, SBSY, CE, DI, CL, MUTE, DB0 to 3,
VSS – 0.3 to VSS + 7.0
CB, CE1, CE2, CE3, LINE, HRESET, VRESET, INIT,
RESET, N/P, SON, XIN1, XIN2
VSS – 0.3 to VDD + 0.3
SBCK, DO, CDGM, WE, RAS, A0 to 7, DB0 to 3, CAS, OE,
ROUT0 to 3, GOUT0 to 3, BOUT0 to 3, HSYNC, CSYNC,
BLANK, YS, 4FSCO, EFLG, FSCO, XOUT1, XOUT2
VSS – 0.3 to VDD +0 .3
Ta = 25°C
500
–30 to +85
–40 to +125
Unit
V
V
V
mW
°C
°C
SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110 JAPAN
13097HA(OT) No. 5521-1/22






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SeitenGesamt 22 Seiten
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