M66332FP Datasheet, PDF (1/43 Pages) Mitsubishi Electric Semiconductor – FACSIMILE IMAGE DATA PROCESSOR

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M663M36623F32PFP
FACFASCIMSIILMEILIMEAIMGAEGDEATDAATPARPORCOECSSEOSSROR
DESCRIPTION
The M66332 is a facsimile image processing controller that
converts analog signals that are photoelectrically converted
by an image sensor into bi-level signals.
It has image processing functions such as peak detection,
uniformity correction, γ correction, MTF compensation, de-
tector of background and object levels, dither control, sepa-
ration of image data area, scale down, and area specification.
This controller has a built-in 5-bit flash type A-D converter
and interface circuits to image sensor, analog signal process-
ing circuit, and CODEC (Coder & Decoder) to simplify control
of the readout mechanism.
FEATURES
0 High Speed Scan (MAX. 2 ms/line, TYP. 5 ms/line)
0 A3 (8 pixels/mm) Line Sensor Attachment
0 Image sensor (CCD,CIS) control signal generation
CCD: SH, CK1, CK2, RS
Contact sensor (CIS): SH, CK1 (or CK2)
0 Analog signal processing circuit control signal generation
CLAMP, S/H, AGC, DSCH
0 Built-in 5-bit Flash Type A-D Converter
0Bi-level data external input/output interface Serial output
(→M66330)
8-bit MPU bus output with external DMA control signal
0 Image data processing
γ correction
Uniformity correction (block correction in units of 8 pixels)
MTF compensation (1 dimension)
Detector of background and object level (programmable)
Dithering control
• Dither method (16 levels using 4 × 4 matrix)
Separation of image data area (1 dimension)
Scale down A3 → B4, A3 → A4, B4 → A4
0 5V Single Power Supply
APPLICATION
Facsimiles
PIN CONFIGURATION (TOP VIEW)
GND 45
VCC 46
CS 47
MPU Interface
RD 48
WR 49
RESET 50
GND 51
GND 52
DMA Interface
DRQ
DAK
53
54
VCC 55
Sensor Interface SH 56
M66332FP
28 TEST Test pin
27 ASIG Analog Signal
26 NC Processing Interface
25 VWL White Basic Supply Voltage
24 VML3 Middle Basic Supply Voltage 3
23 VML2 Middle Basic Supply Voltage 2
22 GND
21 VML1 Middle Basic Supply Voltage 1
20 VBL Black Basic Supply Voltage
19 AGND
18 AVCC
17 DSCH Analog Signal
Processing Interface
Outline 56P6N-A
NC: No Connection
1