JMB311 Datasheet PDF - JMicron


Part Number JMB311
Description USB2.0 UVC WebCam Controller
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JMB311 USB2.0 UVC WebCam Controller
JMB311 is a low power USB2.0 PC/NB camera controller. It incorporates a high speed USB2.0
transceiver, a CMOS sensor interface, a SPI serial interface and a low-power 8051 CPU.
JMB311 is fully compliant with USB Video Class (UVC) 1.1. With the flexible and programmable
CMOS sensor interface, it can support a variety of sensor sources, like Omnivision, Micron/Aptina and
others, up to UXGA(1600*1200).
JMB311 also provides real-time VGA-size preview mode up to 30 frames per second on different
resolutions. In addition, a built-in 5V/3.3V voltage regulator could reduce the system BOM cost.
3.3V single power, 1.8V core power from internal regulator.
Built-in regulator from 5V to 3.3V
Lower power consumption (Operation < 55mA, Standby < 45mA & Suspend < 300uA)
Built-in DP8051 (16KB code SRAM for easy update)
Built-in JTAG interface for easy debug
GPIO for LED indicator, shutter button, module flip detection, sensor power-down control,
sensor reset, I2C(SCL & SDA) and SPI I/F (CS, SCLK, SI & SO).
Built-in watchdog timer
46-pin LQFN (4.5mm*6.5mm)
Sensor Interface
Support CMOS sensor (OmniVision & Micron)
Support YUY2 (8 bit), RGB(565) and RGB Bayer pattern (8 bit).
Down-sampling frames for flow control
Video streaming up to 30 fps@VGA, 9fps@SXGA and 6fps@UXGA at high-speed operation
VGA Preview mode 30fps for SXGA & UXGA.
Output max.60MHz sensor clock.
Support clock divider (%2, %4,…) for 30fps series(30, 15, 7.5…fps) and 25fps series(25,12.5,
USB 2.0
USB Video Class 1.1 compliant
Remote wake-up
Support 3 Endpoints: Control *1, Isochronous*1/ Bulk*1 and Interrupt*1
Copyright © 2011 JMicron Inc. All rights reserved.
Product Brief
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Built-in UVC Camera Terminal Control
Auto-Exposure Mode Control
Auto-Exposure Priority Control
Exposure Control
Privacy Control
PanTilt Control
Built-in UVC Color Processing Control
Backlight Compensation Control
Brightness Control
Contrast Control
Gain Control
Power Line Control
Hue Control
Gamma Control
White Balance Control
Debug Interface
Built-in JTAG interface in 100-pin LQFP
UART debug interface to access sensor registers
Easy download program with Xmodem
Support Atmel(AT25F512A), MXIC(MX25L512), pFlash(PM25LV512A) & SST(SST25VF512A)
serial flash
Windows XP 32/ 64 bits, Windows Vista 32/ 64 bits.
MAC OS 10.4.8 later
Linux 2.6.18 later
Copyright © 2011 JMicron Inc. All rights reserved.
Product Brief
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Block Diagram
Supporting Documents
Product Brief
Data Sheet
Hardware Design Guide
Application Schematic
Contact Information
Tech. Support
Copyright © 2011 JMicron Inc. All rights reserved.
Product Brief
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