VGA & CIF USB PC Camera Controller

ZC0301 VGA & CIF USB PC Camera Controller ZC0301 VGA USB PC Camera Controller Vimicro Corporation Preliminary Data Sheet Vimicro Corporation reserves the right to make changes without further notice to any product herein to improve reliability, function or design. Vimicro does not assume any liability arising out of the application or use of any project, circuit described herein; neither does it convey any license under its patent nor the right of others. This document contains information of a proprietary nature. None of this information shall be divulged to persons other than Vimicro Microelectronics Corporation employee authorized by the nature of their duties to receive such information, or individuals or organizations authorized by Vimicro Corporation. 1 Mar. 2002 ZC0301 VGA & CIF USB PC Camera Controller Contents 1. Features.................................................................................................. 4 2. Architecture ........................................................................................... 5 2.1. 2.2. 2.3. 2.4. 2.5. System Controller.................................................................................................................. 5 Image Signal Processor......................................................................................................... 5 Sub-Sample & Raster ........................................................................................................... 5 JPEG Encoder ....................................................................................................................... 6 USB Device Controller.......................................................................................................... 6 3. Pin Definition ......................................................................................... 7 3.1. 3.2. Pin Assignment...................................................................................................................... 7 Pin Description ...................................................................................................................... 7 4. Electrical Characteristics...................................................................... 9 4.1. 4.2. 4.3. 4.4. 4.5. 4.6. Absolute Maximum Ratings................................................................................................. 9 DC Characteristics ................................................................................................................ 9 USB Transceiver AC Characteristics .................................................................................. 9 RESET Timing AC Characteristics................................................................................... 10 Clock AC Characteristics ................................................................................................... 10 Input Signal AC Characteristics........................................................................................ 11 5. Register Table (Vendor Commands)...................................................11 6. Mechanical Information ..................................................................... 12 Appendix I Sensor Interface Description ................................................ 13 2 Mar. 2002 ZC0301 VGA & CIF USB PC Camera Controller Illustrations FIGURE 1 USB PC CAMERA SYSTEM BLOCK DIAGRAM.......................................................4 FIGURE 2 ZC0301 FUNCTIONAL BLOCK DIAGRAM ..............................................................5 FIGURE 3 28-PIN PLCC PACKAGE........................................................................................7 FIGURE 4 RESET TIMING AC CHARACTERISTICS DIAGRAM ............................................ 10 FIGURE 5 CLOCK TIMING AC CHARACTERISTICS DIAGRAM ............................................. 10 FIGURE 6 INPUT SIGNAL TIMING AC CHARACTERISTICS DIAGRAMS ................................ 11 FIGURE 7 28-PIN PLCC PACKAGE DIAGRAM .................................................................... 12 Tables TABLE 1 SENSOR INTERFACE (15 PINS) ................................................................................7 TABLE 2 USB HOST INTERFACE (2 PINS) .............................................................................8 TABLE 3 CLOCK, RESET, AND MISCELLANEOUS (5 PINS).....................................................8 TABLE 4 POWER AND GROUND (6 PINS)...............................................................................8 TABLE 5 MAXIMUM RATINGS ...............................................................................................9 TABLE 6 DC CHARACTERISTICS ..........................................................................................9 TABLE 7 FULL-SPEED DRIVER ELECTRICAL CHARACTERISTICS ...........................................9 TABLE 8 LOW-SPEED DRIVER ELECTRICAL CHARACTERISTICS............................................9 TABLE 9 RESET SIGNAL AC CHARACTERISTICS ................................................................ 10 TABLE 10 CLOCK SIGNAL AC CHARACTERISTICS ............................................................. 10 TABLE 11 INPUT SIGNAL AC CHARACTERISTICS............................................................... 11 TABLE 12 SYSTEM CONTROL REGISTER ............................................................................ 11 TABLE 13 ZC0301 PACKAGE DIMENSION ......................................................................... 12 3 Mar. 2002 ZC0301 VGA & CIF USB PC Camera Controller 1. Features VSYNC HSYNC DATA[7:0] PCLK ENB Serial Interface MCLK (48MHZ) CRYSTAL OSCILLATOR ZC0301 USB CABLE PC HYUNDAI CMOS IMAGE SENSORS Figure 1 USB PC Camera System Block Diagram With a miniature 28-Pin PLCC package and without external DRAM, ZC0301 provides a cost effective single chip solution for PC camera application. All major image processing functions, image data compression, and data transfer units are built in the chip. The ZC0301 chip communicates with PC host via Universal Serial Bus (USB) port. • • • • • • • • • • • • • • • • • • • Provide most cost effective PC camera solution with 28-pin package Support VGA CMOS sensors from Hyundai Support up to 15 fps VGA video display without DRAM USB Device Controller compliant with USB Protocol 1.1 Support pan function based on 8x8 pixels unit Support 8-bit RGB Bayer pattern raw data input from CMOS image sensors Support 2-wire control interface to CMOS image sensor Support programmable color correction and gamma correction Support AE/AWB and programmable AE/AWB windows Support automatic CMOS sensor Reset Level Control Support automatic Gain Control Support auto/manual Histogram Equalization Support 2x2 Sub-Sampling Support ISO/IEC 10918-1 (JPEG) standard image compression Support JPEG File Interchange Format (JFIF) compressed image data output Support 2 AC and 2 DC Huffman code table Support 4 quantization tables for programmable image quality Adjustable compression ratio Support Custom-ID option 4 Mar. 2002 ZC0301 VGA & CIF USB PC Camera Controller 2. Architecture ISP CMOS image sensor Subsample & Raster JPEG Encoder USB Device Controller PC host System Controller ZC0301 Figure 2 ZC0301 Functional Block Diagram The ZC0301 consists of five major function blocks, System Controller, Image Signal Processor, Sub-Sample & Raster, JPEG Encoder, and USB Device Controller, as illustrated in Figure 1. These blocks provide the following functions. 2.1. System Controller • • • • Providing the control to ISP, JPEG, and USB blocks Configuring the control registers Chip clock generation Error control for the data block through USB interface 2.2. Image Signal Processor • • • • • • • • • • • • Dedicated sensor control and signal processing module. Serial-Bus interface for CMOS Image Sensor 8 bit Bayer format image input 3x3 Interpolation Color Correction Gamma Correction Automatic Exposure Control Automatic White Balance Control Programmable AE windows Automatic Reset Level Control RGB to YCrCb Color Space Convert Histogram Equalization Logic 2.3. Sub-Sample & Raster • The input data format is 4:4:4 for Y component, Cb component and Cr component. The three components for a pixel are input simultaneously. 5 Mar. 2002 ZC0301 VGA & CIF USB PC Camera Controller • • • The output data format is in 4:2:2 for the three components. The output sequence is Y,Y,Cb,Cr for the three components. When scale option is deserted, the output pixel number is the same as the input pixel number; when scale option is asserted, the output pixel number is 1/4 of the pixel number of input image. Change input image data format to 8x8 block data format required by DCT module. 2.4. JPEG Encoder • • Providing register control for image size, compression rate and the image quantity. Compliant with ISO/IEC 10918-1 standard. 2.5. USB Device Controller • • • • • • • • Compliant with USB protocol 1.1 Support full speed USB device Clock and data recovery from USB Bit stripping/stuffing and NRZI decoder/encoder Check all possible error conditions, including CRC error, bit stuffing error, PID error, as well as synchronization error Support all standard request and vendor/class request Configuration can be changed easily to support different applications Support suspend mode 6 Mar. 2002 ZC0301 VGA & CIF USB PC Camera Controller 3. Pin Definition 3.1. Pin Assignment 25 24 23 22 21 20 CLKXIN CLKXOUT OVSS CS_CLK OVDD CS_D[3] CS_D[4] 19 PWUP_RST# CS_D[2] CS_D[1] CS_D[0] TEST SDA SCK 26 27 28 1 2 3 4 18 17 16 SNAPB DVDD VDD_USB D− D+ VSS_USB DVSS ZC0301 15 14 13 12 10 HSYNC CS_D[6] CD_D[5] CS_D[7] CS_RESET# Figure 3 28-Pin PLCC Package 3.2. Pin Description Table 1 Sensor Interface (15 Pins) CS_ENB VSYNC 11 5 6 7 8 9 Signal CS_D[5] CS_D[6] CS_D[7] CS_RESET# CS_ENB HSYNC VSYNC CS_