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參數(shù)資料
| 型號： | LC7874E |
| 廠商： | Sanyo Electric Co.,Ltd. |
| 英文描述： | CD Graphics Decorder |
| 中文描述： | 光盤圖形解碼器 |
| 文件頁數(shù)： | 1/22頁 |
| 文件大?。?/td> | 241K |
| 代理商： | LC7874E |
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
V
DD
V
DD
S1, S2, SFSY, PW, SBSY, CE, DI, CL, MUTE, DB0 to 3,
V
SS
– 0.3 to V
SS
+ 7.0
V
Input voltage
V
IN
CB, CE1, CE2, CE3, LINE, HRESET, VRESET, INIT,
V
SS
– 0.3 to V
DD
+ 0.3
V
RESET, N/P, SON, XIN1, XIN2
SBCK, DO, CDGM, WE, RAS, A0 to 7, DB0 to 3, CAS, OE,
Output voltage
V
OUT
ROUT0 to 3, GOUT0 to 3, BOUT0 to 3, HSYNC, CSYNC,
V
SS
– 0.3 to V
DD
+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
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