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PDF LC82104 Data sheet ( Hoja de datos )

Número de pieza LC82104
Descripción Color Image Processing IC for Fax and Scanner Applications
Fabricantes Sanyo Semicon Device 
Logotipo Sanyo Semicon Device Logotipo



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No Preview Available ! LC82104 Hoja de datos, Descripción, Manual

Ordering number : EN*5685
Preliminary
COMS IC
LC82104
Color Image Processing IC for Fax
and Scanner Applications
Overview
The LC82104 converts analog image signals from a CCD
and contact image sensor to precise multi-valued image
data using a built-in 8-bit A/D converter and internal
image-processing functions. The LC82104 includes a 6-bit
reference potential setting D/A converter for the 8-bit A/D
converter and CDS function, and produces high-quality
multi-valued data by performing shading correction for all
pixels, color balance adjustment, and gamma conversion
with support for arbitrary gamma curves. It also includes a
multi-value data resolution conversion function, and thus
can support input from and output to systems with
different resolutions. Furthermore, it can perform high-
quality conversion to two-valued images from the green
signal. The LC82104 can process up to 5400 pixels by
three lines and requires no external memory whatsoever
for use in distortion correction and other processing. Thus
this IC can implement the image processing required for
color scanners, FAX, copiers, OCRs and similar
applications.
Features
• Number of pixels processed:
2700 pixels × 3 lines
(Both bright and dark correction applied to all pixels)
5400 pixels × 3 lines
(Only bright correction applied to all pixels)
• Processing speed:
1,200 ns/pixel maximum (3-color CCD) (When CLKIN
is 20 MHz)
400 ns/pixel maximum (CIS and black-and-white CCD)
(When CLKIN is 20 MHz)
• 8-bit A/D converter
(Includes a sensor signal timing adjustment function.)
• 6-bit D/A converter for setting the A/D converter
reference potential
• Sensor drive circuit
(Supports all types of CCD and CIS sensors)
• Digital CDS (Correlated double sampling)
• Digital clamp circuit
(Single-point clamping, even field clamping)
• Shading correction
(Bright correction: all-pixel correction, dark correction:
either all-pixel correction or set dark correction
attenuation data)
• Gamma correction
(Supports user-defined curves for each of R, G, and B
using 8-bit data)
• Color balance (Gain control)
• Main scan direction multi-value resolution conversion
(From 2/1 to 1/2, in units of 1/256)
• Binary coding
(Simple binary coding (slicing), and 64-level error
diffusion)
*: The green signal is converted to a binary signal.
• Memory manager
(Image data buffer memory controller)
• Fabricated in a CMOS process for 5-V single-voltage
power supply operation.
Package Dimensions
unit: mm
3181B-SQFP100
[LC82104]
SANYO: SQFP100
SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN
30698RM(OT) No. 5685-1/6

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LC82104 pdf
LC82104
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Pin
GIN
RIN
BIN
ATEST
AVDD
AGND
DVDD
DGND
DA15/GOE
DA14/ROE
DA13/BOE
DA12
DA11
DA10
DA9
DGND
DA8
DA7
DA6
DA5
DA4
DA3
DA2
DA1
DA0
DGND
DVDD
RAS
CAS0
CAS1/MWR1
MWR0
MRD
IOWR
CLAMP/LININT
NC
NC
PD7/SD
PD6/SDCK
DVDD
DGND
PD5/SDE
PD4/PP4
PD3/PP3
PD2/PP2
PD1/PP1
PD0/PP0
PDCK/DACK/PP5
PDE/DREQ/PP6
MTP/PP7
DGND
I/O Function
I Green sensor signal input
I Red sensor signal input
I Blue sensor signal input
O Analog test output (Normally left open.)
P Analog system power supply
P Analog system ground
P Digital system power supply
P Digital system ground
O /Green data valid period signal
O /Red data valid period signal
O /Blue data valid period signal
O External memory address signal outputs
O DA15 is the MSB, DA0 is the LSB.
O
O
P Digital system ground
O
O
O
O External memory address signal outputs
O DA15 is the MSB, DA0 is the LSB.
O
O
O
O
P Digital system ground
P Digital system power supply
O External memory RAS signal output
O External memory CAS signal output
O External memory CAS0 signal output/External memory MWR1 signal
O External memory MWR0 signal output
O External memory MRD signal output
O I/O write signal output
O Clamp point monitor signal output/Line signal output
NC
NC
O DMA output/serial data output
O DMA output/serial data transfer clock
P Digital system power supply
P Digital system ground
O DMA output/Serial data output valid period signal output
B
B
B DMA outputs/general-purpose I/O ports
B
B
B Parallel data transfer clock/DMA data acknowledge signal input/general-purpose I/O port
B Parallel data output valid period signal/DMA data request signal output/general-purpose I/O port
B Motor drive timing signal output/General-purpose I/O port
P Digital system ground
No. 5685-5/6

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