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LC82221 Schematic ( PDF Datasheet ) - Sanyo Semicon Device

Teilenummer LC82221
Beschreibung Motion JPEG Decoder
Hersteller Sanyo Semicon Device
Logo Sanyo Semicon Device Logo 




Gesamt 7 Seiten
LC82221 Datasheet, Funktion
Ordering number : EN *5846
CMOS IC
LC82221L
Motion JPEG Decoder
Preliminary
Overview
The LC82221L is a full-color digital image data expansion
IC that accepts data in formats that essentially conform to
the JPEG standard. With the provision of frame memory,
this IC can input and output image data in standard video
formats. In addition, it also supports a wide range of
image display functions using that frame memory. As
compared to earlier JPEG ICs, this IC features simplified
JPEG functionality and a greater emphasis on display
functions. Thus it supports the creation of excellent cost-
performance ratio systems for applications that require a
display system.
Features
• High image quality image expansion using the JPEG
system
• Superlative cost performance achieved by only
providing decoding functions.
• Two built-in quantization tables.
• High-speed processing achieved by using fixed Huffman
tables. Application do not have to set up these tables.
• Two Huffman tables, one for luminance data and one for
chrominance data, are provided.
• Supports scaling factor parameters that allow the
quantization factor to be changed.
• DRAM for code data buffering and image data playback
can be connected directly.
• Applications can use either 2Mb or 4Mb DRAMs based
on the sizes of the image handled and the structure of the
system. However, 16-bit data path DRAMs must be
used.
• Image data is output in synchronization with an image
display synchronizing signal.
• Color structure of the code data is Y:U:V=4:1:1.
• Dedicated code data input bus provided to avoid loading
the host bus. DMA transfers are also supported.
• Users can select either RGB or YUV for image data
output.
• Built-in YUV to RGB color conversion circuit
• The LC82221L supports image sizes up to 1024 pixels
in the horizontal direction. The range of vertical sizes
handled can be set up arbitrarily, since it is limited by
the size of the DRAM provided.
• 3.3-V single-voltage power supply. Low power.
• The display position and display size can be set.
• SOI and EOI marker support
• Horizontal and vertical scrolling display functions
• Support for overwrite display, in which the next data for
expansion is displayed by overwriting the previously
expanded image data
Package Dimensions
unit: mm
3214-SQFP144
[LC82221L]
SANYO: SQFP144
SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN
62698RM (OT) No. 5846-1/7






LC82221 Datasheet, Funktion
LC82221L
Continued from preceding page.
Pin Number
Pin Name
Type
91 VSS
Ground
92
MD5
I/O
93
MD4
I/O
94
MD3
I/O
Frame memory interface data bus
95
MD2
I/O
96
MD1
I/O
97
MD0
I/O
98 VDD
+3.3-V power supply
99
MA8
O
100
MA7
O
101
MA6
O
102
MA5
O
103
MA4
O Frame memory address signals
104
MA3
O
105
MA2
O
106
MA1
O
107
MA0
O
108 VSS
Ground
109 VDD
+3.3-V power supply
110
DG7
O
111
DG6
O
112
DG5
O
113
DG4
O
Pixel data bus G (U) *
114
DG3
O
115
DG2
O
116
DG1
O
117
DG0
O
118 VSS
Ground
119 VDD
+3.3-V power supply
120
DB7
O
121
DB6
O
122
DB5
O
Pixel data bus B (V) *
123
DB4
O
124
DB3
O
125
DB2
O
126 VDD
+3.3-V power supply
127 VSS
Ground
128
DB1
O
Pixel data bus B (V) *
129
DB0
O
130
DR7
O
131
DR6
O
Pixel data bus R (Y) *
132
DR5
O
133
DR4
O
134 VSS
Ground
Note: * These pins must be pulled up with a resistance of about 10 k.
Description
Continued on next page.
No. 5846-6/7

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