ICM532B CIF Color CMOS Sensor with USB Output
Data Sheet, V 1.1 November, 2002
ICM532B
CIF Color CMOS Image Sensor
With USB Output
Data Sheet
V1.1
November, 2002
IC Media Corporation
545 East Brokaw Road
San Jose, CA 95112, U.S.A.
Phone: (408) 451-8838
Fax: (408) 451-8839
Email: Sales@IC-Media.Com
Web Site:
www.ic-media.com
IC Media Technology Corporation
6F, No. 61, ChowTze Street., NeiHu District
Taipei, Taiwan, R.O.C.
Phone: 886-2-2657-7898
Fax: 886-2-2657-8751
Email: Ap.Sales@IC-Media.Com.tw
Web Site: www.ic-media.com.tw
Important notice: This document contains information on a new product. IC Media Corp reserves the right to
make any changes without further notice to any product herein to improve design, function or quality and
reliability. No responsibility is assumed by IC Media Corp for its use, nor for any infringements of patents of
third parties, which may result from its use.
©2000, 2001,2002 IC Media Corporation & IC Media Technology Corp
11/21/2002
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Company Confidential
ICM532B CIF Color CMOS Sensor with USB Output
Data Sheet, V 1.1 November, 2002
Features
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CIF format (352x288) pixels, used with 1/7” optical system.
QVGA format (320x240) pixels, used with 1/7” optical system
QCIF format (176x144) pixels, cropped or subsampled, up to 37.5 fps.
Progressive readout
Output data format: compressed 8-bit raw data
Image processing and decompression supported with proprietary software. Image processing functions
include color interpolation, color correction, auto white balance, auto exposure, auto anti-flickering, and
sharpening.
Proprietary data compression
Input/Output interface: USB 1.1 Full Speed
Electronic exposure control
On-chip 9-bit ADC
Correlated double sampling
Dead pixel and dead column removal
Power down/Suspend mode
8 User Programmable GPIO pins
Optional 3.3V Serial EEPROM register loading during power-up (24C02/04/08/16)
Automatic optical black compensation
Mirror image
Single 3.3 V power supply
Key Parameters
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Number of Active Pixels: up to 352x288
Number of Physical Pixels: 362x298
Frame Rate: up to 30 fps ( 35 fps QCIF )
Pixel Size: 6.0
µm
x 6.0
µm
Sensor Area: 2.2 mm x 1.8 mm
Single Crystal Frequency: 6 MHz
Exposure Time: 125
µs
(@ 25 fps, 1 line) ~ 8 s (@ 12 fps)
Sensitivity: 1.0 V/lux-sec (555 nm)
Quantum Efficiency: 38 % (555 nm)
Dynamic Range: 53 dB (analog), 48 dB (digital)
Fill Factor: 36%
S/N Ratio: 45 dB @ 75% full signal level
Sensitive to infrared illumination source
Digital Gain: 1 ~ 64 x @ 2
N
for all pixels
RGB Gain: 1/256 ~ 64 x for individual Bayer pattern pixels
Power Supply: 3.3 V
Power consumption: 130mW typ.
Packages: SPLCC48
©2000, 2001,2002 IC Media Corporation & IC Media Technology Corp
11/21/2002
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Company Confidential
ICM532B CIF Color CMOS Sensor with USB Output
Data Sheet, V 1.1 November, 2002
General Description
ICM-532B is a single-chip, CIF resolution, digital color PC camera with integrated data compression, line
buffer and Full Speed USB 1.1 interface. All the image processing functions (color interpolation, color
correction, auto white balance, auto exposure, auto anti-flickering, sharpening) are performed by software in
the host computer. It incorporates a 352x288 sensor array operating at 6 ~ 30 frames per second in
progressive manner. Each pixel is covered by a color filter, which forms a “Bayer pattern.” Correlated
double sampling is performed by the internal ADC and timing circuitry. The raw data can be adjusted with
digital gain. The raw data is compressed using a proprietary compression scheme. The compression allows
video out in 8-bit compressed data format through USB 1.1 with 30 frames per second video capability. For
higher frame-rates, sub-sampled or cropped QCIF (176x144) modes are available that support 35 frames per
second.
8 Pins are supplied that can be programmed by the driver as general purpose I/O pins, with individually
selectable output enables. During power-up, the internal control registers can be loaded from an external
serial EEPROM. This allows customization of Vendor ID and Product ID, as well as initialization of other
device parameters.
The 48 MHz clock required for the ICM-532B is provided by an on-chip phase-lock loop that is driven by an
external 6 MHz crystal oscillator. Using a PLL reduces power dissipation, electrical noise and the cost of the
crystal. It also reduces the need for EMI shielding that would be required if a 48 MHz oscillator were used.
The highest frequency external signal is the 12Mbps on the differential USB data pins.
Software Support
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Computer & OS requirements: 750 MHz, 64M memory for 30 fps; 300 MHz, 64M memory for 12 fps.
Windows 98, Windows ME, Windows 2000
Macintosh OS 9.
Driver support
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WDM USB driver
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TWAIN
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DirectShow
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VFW extension driver
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Proprietary DirectShow decoder
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Installation software
Applications
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PC camera
Embedded Solutions (Notebooks, LCD monitors)
©2000, 2001,2002 IC Media Corporation & IC Media Technology Corp
11/21/2002
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Company Confidential
ICM532B CIF Color CMOS Sensor with USB Output
Data Sheet, V 1.1 November, 2002
1. Pin Assignments
Pin #
36
37
40
39
3,5,34
44
2
1
16
8
15
46
47
48
10
11
12
13
14
7,27,31
9,28,30
19
17
4,26,33,
38,41,43
6,29,32,
35,42,45
18
Name
DN
DP
XIN
XOUT
Reserved
Test
Clock_S
Data_S
RSET
RSTN
RAMP
GPIO 0
GPIO 1
GPIO 2
GPIO 3
GPIO 4
GPIO 5
GPIO 6
GPIO 7
VDDA
GNDA
VDDD
GNDD
VDDK
GNDK
GNDS
Class
B,IO
B,IO
A,I
A,O
D,O
D, I, N
D, IO
D, IO
A,I
D,SI,U
A,O
D,IO
D,IO
D,IO
D,IO
D,IO
D,IO
D,IO
D,IO
P
P
P
P
P
P
P
Function
USB D- connection
USB D+ connection
6 MHz Crystal Input
6 MHz Crystal Output
Leave Unconnected
Leave Unconnected
Serial clock, for external serial EEPROM
Serial data, for external serial EEPROM
Resistor to Ground = 75
ΚΩ
Chip Reset, active low
Analog Test Output
User Programmable I/O, Requires External Pull-up
User Programmable I/O, Requires External Resistor
User Programmable I/O, Requires External Pull-up
User Programmable I/O
User Programmable I/O
User Programmable I/O
User Programmable I/O
User Programmable I/O
Sensor & PLL Analog Power
Sensor & PLL Analog Ground
Sensor Digital Power
Sensor Digital Ground
Digital Power
Digital Ground
Substrate Ground
Class Code: A – Analog signal, D – Digital signal, I – Input, SI – Schmitt Input, O – Output, IO – Bidirectional, P – Power or
ground, U – Internal pull-up, N – Internal pull-down, B – USB Pad
2. Functional Description
ICM-532B is a single-chip USB digital color imaging device. It includes a 352x288 sensor array, 352
column–level ADC, and correlated double sampling circuitry. All the programmable parameters are set
by writing through the USB interface which can address the register file consisting of 8-bit registers.
The internal CIF image sensor is based upon the ICM-102B. The output format is USB 1.1 compatible
compressed video data using a single ISOCHRONOUS channel. Dead pixels and dead columns are
©2000, 2001,2002 IC Media Corporation & IC Media Technology Corp
11/21/2002
page
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Company Confidential
ICM532B CIF Color CMOS Sensor with USB Output
Data Sheet, V 1.1 November, 2002
removed, to generate a high quality image.
5X Proprietary
1/7”
lens
ICM-102B
CIF Image
Compression
USB
Line Buffer
USB Enabled
Computer
Sensor
Figure 1. Block Diagram
2.1. Image Array
The image array consists of 352x288 pixels. Each pixel has a light sensitive photo diode and a set of
control and transfer transistors. At the beginning of the cycle, a row of pixels is pre-charged to its
maximum value. Then they are exposed to light for several lines worth of time and sampled by the
ADC. Correlated double sampling (CDS) is performed by subtracting the reset value (sampled right
before sampling the signal) from the signal value. The purpose of CDS is to eliminate the point-wise
fixed pattern noise (FPN). The output of CDS is approximately proportional to the amount of received
light, ranging from 0 to 255.
2.2. Color Filter
Each pixel is covered by a color filter. They form the Bayer Pattern as shown in Figure 2. (Row 0,
Column 0) is covered by a Red filter, (Row 0, Column 1) and (Row 1, Column 0) by Green filters, and
(Row 1, Column 1) by a Blue filter. Since each pixel only gets part of the frequency band, the data
needs further processing (i.e., color interpolation and color correction) in order to approximate the full
visible spectrum.
R
G
R
G
G
B
G
B
R
G
R
G
G
B
G
B
R
G
R
G
G
B
G
B
R
G
R
G
G
B
G
B
Figure 2. Color filter Bayer pattern
2.3. Exposure and Gain Control
The brightness of the scene may change by a great amount that renders the captured image either
©2000, 2001,2002 IC Media Corporation & IC Media Technology Corp
11/21/2002
page
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Company Confidential
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