CX93610 DIFT JPEG Encoder SmartVideo Product Brief Low-Power HD Camera Encoder for Wireless and Battery-Operated Cameras Product Overview Key Features The CX93610 is a monolithic mixed signal ASSP designed for low cost and low power motion detection surveillance camera applications, as well as home monitoring/remote monitoring applications. Used with an external CMOS image sensor, the CX93610 offers a variety of specialized JPEG encoding techniques to highly compress and save image data in an internal 512KB/ 256KB frame buffer. An optional 2:1 and 4:1 scaler is available for image re-sizing. In addition, a 4:2:0 subsampling conversion is available to further reduce image file sizes. With a microphone input and programmable allocated buffering, a 2-bit or 4-bit ADPCM audio session can be recorded simultaneously during image captures. The stored images and audio data are then passed on to an external microprocessor for uploading to a preferred medium. • The CX93610 is controlled through a simple register set through the microprocessor interface, and the variety of available interfaces (SPI, UART, and I2C) allow for wide flexibility in microprocessor selection. With both digital and analog photocell sensor inputs available, the CX93610 can facilitate the measurement of ambient light and use an on-chip LED driver to control an external infrared LED array during low-light conditions. With low cost, low power, and high image compression capability, the CX93610 is ideally suited for security and monitoring applications. Applications • • • • • PIR sensor with video Video intercom/door phone Baby monitor applications Remote home monitoring Low-end surveillance camera Conexant Confidential • www.conexant.com • 014PBR00 • • • • • • • • • • • • Integrated mixed-signal design for analog-to-digital image processing On-chip 512KB/256KB frame buffer Supports enhanced JPEG compression techniques and >1MP CMOS sensors, and processes both color and black and white images DIFT-encoded JPEG reduces file sizes by up to 99% Low sleep mode power –10nA, and low operating power (<15mA) Frame-by-frame motion detection with programmable thresholds Integrated analog components (ADCs, LCD driver) I2C, SPI, and UART interfaces for flexible connectivity Register-driven device Optional microphone input records audio session simultaneously during image captures Visual verification of intruder through an image sensor interface Privacy mode—Blurs out image details Frame-by-frame motion detection with programmable thresholds System Block Diagram CMOS Sensor SoC 6 5 6 Scaler JPEG Frame Buffer 512K/ 256K I2Cs SPI UART I2C m SCCB 54/48 MHz Crystal/Clock Xtal CLK Microphone MIC In Analog Photo Sensor ADC In 1 Host Processor Motion Sensor CX93610 Registers PD Mem PD VBAT Optional DC/DC Conversion Sensor Host DC-DC (VDD/ I/0 I/O VRR/VCORE) VBAT_IO VBAT_DIG VB A T 1V LDO (AVDD) VBAT_ANA LED Out IR LEDs I2C m Digital Photocell G P IO s Sensor Host/Status CX93610 DIFT JPEG Encoder | SmartVideo Product Brief Additional Features • Operating Modes • • • • • • • • • • • • • SXGA 1.3MP (1280x1024) and HD (1280x720)—Black and white or color up to 15fps (512KB option only) D1 (720x480) and VGA (640x480)—Black and white or color up to 30fps Up to 5MP (2592x1944)—Black and white or color, JPEG still captures (512KB option only) Resolution scaling of ½ or ¼ (available for input resolutions of 1280x1024 or lower) 4:2:2 to 4:2:0 sub-sampling conversion (available for input resolutions of 1280x1024 or lower) JPEG and MJPEG image compression (ISO/IEC 10918-1/2) Programmable difference threshold encoded JPEG mode (DIFT) Differential-encoded JPEG mode (DIFF) Programmable DCT tables for ultimate flexibility in compression and image quality (two pre-defined tables) Light detection through luminance measurements with auto IR LED control Continuous streaming and variable image modes 512KB/256KB frame buffer for compressed images (no external memory) with programmable audio buffer allocation • • • Interface to external mP though SPI, UART, or I2C Variable IR illumination control port A/D for photocell sensor, battery voltage monitor, and microphone inputs Sleep mode—SoC off, except the frame buffer in retention mode Integrated DC-DC converter for reduced power consumption • • • • 56-Pin eMLF/QFN • Interfaces • Sensor i/f: – 8-b 4:2:2 YCbCr with BT-656 embedded timing codes, or frame/line sync support up to 54 MHz, progressive mode – Resolutions of 5MP (2592x1944), 1.3MP SXGA (1280x1024), (VGA (640x480), and QVGA (320x240) – 54MHz or 48MHz clock output with divide-by-two option for 27MHz or 24MHz output – Crystal/clock input allowing 54MHz, 48MHz, 27MHz, or 24MHz. Supports fundamental and third overtone crystals – • • • 2/3 wire control i/f—I2C master port or SCCB Four-wire I2C/SPI/UART slave port to external mP Eight GPIOs (five dedicated pins and three shared pins) IR illumination with variable DAC control Microphone input, microphone boost 0dB–36dB in 6dB steps, 2-bit and 4-bit ADPCM DC measurement battery monitor Photocell sensor input—Analog or I2C (shared with the GPIO) Support for battery operation— 3.6V to 1.8V • • –40oC to 85oC ambient, 100oC junction <15mA in operational mode <10nA in sleep mode Benefits • • • • • • • • • • No external components required for image conversion No external RAM required Provides excellent image processing up to 30fps Faster transfer time and longer battery life Longer battery life and energyefficient design generates less heat Enhances monitoring by alerting host of activity No analog components required Allows for wide selection of microprocessors Simple operation; no internal CPU Provides complete A/V solution with flexible frame buffer for audio and video data storage www.conexant.com Headquarters: 1901 Main Street, Suite 300 Irvine, CA,92614 General Information: U.S. and Canada: 888-855-4562 | International: 1 + 949-483-3000 © 2014 Conexant Systems, Inc. All rights reserved. 014PBR00