ZC0302 ETC | Alldatasheet
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Mar. 2002 1 ZC0302 VGA & CIF USB PC Camera Controlle r ZC0302 VGA USB PC Camera Processor Vimicro Corporation 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 Corporation employee authorized by the nature of their duties to receive such information, or individuals or organizations authorized by Vimicro Corporation.
Mar. 2002 4 ZC0302 VGA & CIF USB PC Camera Controlle r 1. Features PC ZC0302 DATA[8:0] Serial Interface VSYNC HSYNC PCLK ENB /i0/i0/i0/i0/i0/i0/i0/i0/i0/i0/i0/i0/i0/i0/i0/i0/i0/i0/i0/i0/i0 /i0 /i0/i0/i0/i0/i0/i0/i0/i0/i0/i0/i0/i0/i0/i0/i0 /i0/i0/i0/i0/i0 /i0 /i0/i0/i0/i0/i0/i0/i0/i0/i0/i0/i0/i0/i0/i0/i0 /i0/i0/i0/i0/i0 /i0/i0/i0/i0/i0/i0/i0/i0/i0/i0/i0/i0/i0/i0/i0/i0/i0/i0/i0/i0/i0 CRYSTAL 48M Hz CMOS IMAGE SENSORS USB CABLE EEPROMESCK ESDA MIC OSCIN OSCOUT FIGURE 1 USB PC CAMERA SYSTEM BLOCK DIAGRAM The ZC0302 chip provides a cost effective single chip solution for the PC camera application. It communicates with PC host via Universal Serial Bus (USB) port. All major image processing functions, such as image signal processing (ISP), image data compression and data transfer units are built in the chip. Meanwhile ZC0302 also provides high quality audio sampling function for sound recording. The audio function complies with USB audio class 1.0. ZC0302 is designed as a cost-effective single-chip device replacing the complex and costly chip sets used in current PC camera designs with embedded USB device controller and transceiver, 48-QFP package, and no external DRAM requirement. Advanced on-chip image signal processor and JPEG encoder produce images with superior quality. 1.1. General Features Low cost, single chip solution for high resolution USB PC camera applications Audio function complying to USB audio device class 1.0 Support up to 15 fps VGA video display without DRAM USB Device Controller compliant with USB protocol 1.1 USB parameter configurable through EEPROM Support 9/8-bit RGB Bayer pattern raw data input from CMOS image sensors Support programmable color correction and gamma correction Support programmable Auto Exposure/Auto White Balance Support Auto Gain Control Support ISO/IEC 10918-1 (JPEG) standard image compression Support 4 quantization tables for programmable image quality Support raw data output for high quality still image 3.3V I/O, 2.5V core No external DRAM required Flexible system level solution support
Mar. 2002 6 ZC0302 VGA & CIF USB PC Camera Controlle r 2.3. USB Features Built-in USB transceiver Suspend and Remote wakeup 3 interface for video, audio and control Programmable OEM USB parameters by EEPROM including: vendor ID, product ID, MaxPower, serial Number, manufacture descriptor, product descriptor and chip revision. 2.4. Image Signal Processing Hardware Dead Pixel Detection/Concealment 8/9-bit RGB raw data input from CMOS image sensor 2-wire/3-wire serial bus interface to CMOS image sensor Programmable white balance, color correction and gamma correction Support automatic Exposure Control, automatic White Balance, automatic CMOS Reset Level Control, automatic Gain Control and auto/manual Histogram Equalization Support programmable AE/AWB windows Support edge enhancement and noise removal Support 2x2 Sub-Sampling 2.5. Raster The output data format is 4:2:2 YCbCr Change the input image data to 8x8 block data format required by the DCT 2.6. Compression Engine Standard JPEG compression engine comply to ISO/IEC 10918-1 (JPEG)
2 AC and 2 DC Huffman code table
4 quantization tables for different image quality Adjustable compression rate by Bit Rate Control (BRC) engine Simplified JPEG header for better performance are programmable VGA @ 15fps, CIF/SIF up to 30 fps Adjustable frame rate for efficient bandwidth usage 2.7. Audio Interface Built-in 16-bit mono audio ADC for audio recording through microphone Sampling rate @ 8K/16K Hz USB audio device class 1.0 compliance 2.8. System Controller Providing the control to ISP, JPEG, and USB blocks Configuring the control registers Chip clock generation
Mar. 2002 7 ZC0302 VGA & CIF USB PC Camera Controlle r Error detection and handling through USB interface
Mar. 2002 8 ZC0302 VGA & CIF USB PC Camera Controlle r 3. Pin Definition 3.1. Pin Assignment ZSMC ZC0302 – 48 LQFP
3 CS_D[6]
4 CS_D[5]
1 CS_D[8]
2 CS_D[7]
8 CS_D[3]
9 CS_D[2]
7 CS_D[4]
11 CS_D[0]
12 PWUP_RST
10 CS_D[1]
VSS_USB 16 DP 17 DM 18 VDD_USB 19 SUSPENDB 21 DVDD 22 SNAPB 23 GND_A 24 NC 20
32 PIO[0]
31 TEST
29 VCM
28 VREFOUT
27 GND_REF
26 MIC
25 VDD_A
35 ESCK
34 PIO[2]
33 PIO[1]
36 PIO[3]
40 HSYNC
41 OVSS
42 CS_CLK
43 OVDD
45 SCK
46 SDA
47 CS_EN
48 CS_RSTB
37 ESDA
38 CS_PWDB
39 VSYNC
FIGURE 3 48-PIN LQFP PACKAGE 3.2. Pin Description Pin Type Function
48 Pin
CS_D[8] I, PD Sensor data 1 CS_D[7] I, PD Sensor data 2 CS_D[6] I, PD Sensor data 3 CS_D[5] I, PD Sensor data 4
Mar. 2002 9 ZC0302 VGA & CIF USB PC Camera Controlle r Pin Type Function CS_D[4] I, PD Sensor data 7 CS_D[3] I, PD Sensor data 8 CS_D[2] I, PD Sensor data 9 CS_D[1] I, PD Sensor data 10 CS_D[0] I, PD Sensor data 11 PWUP_RST I, Schmitt Power on reset, active low 12 CLKXIN I Crystal input 13 CLKXOUT O Crystal output 14 DVSS P Core ground 15 VSS_USB P USB transceiver ground 16 DP I/O USB data 17 DM I/O USB data 18 VDD_USB P USB transceiver power 19 SUSPENDB O Active-low suspend 21 DVDD P Core power 22 SNAPB I, PU Snapshot and remote wake up, active low 23 GND_A P IADC analog ground 24 VDD_A P IADC analog power 25 MIC A IADC microphone input 26 GND_REF A IADC input ground reference 27 VREFOUT A IADC reference voltage 28 VCM A IADC common-mode voltage 29 TEST I, PD Manufacturing test mode 31 PIO[0] I/O, PD General purpose I/O 32 PIO[1] I/O, PD General purpose I/O 33 PIO[2] I/O, PD General purpose I/O 34 ESCK O SEEPROM clock 35 PIO[3] I/O, PD General purpose I/O 36 ESDA I/O, Schmitt EEPRPOM data 37 CS_PWDB O Power-down pin controlling DC/DC regulator 38 VSYNC I/O, PD Vertical synchronous signal 39 HSYNC I/O, PD Horizontal synchronous signal 40 OVSS P I/O ground 41 OVSS P I/O ground 41 CS_CLK O Sensor clock 42 OVDD P I/O power 43 SCK / SICLK O, PD Serial interface clock 45 SDA / SIVAL I/O, Schmitt Serial interface data 46 CS_ENB / SI_EN O, PD Sensor power enable / Serial interface enable 47 CS_RSTB / AECNT O, PD Sensor reset / auto exposure for TASC VGA sensor 48 TABLE 3.1 ZC0302 PIN DESCRIPTIONS
Mar. 2002 10 ZC0302 VGA & CIF USB PC Camera Controlle r 4. Electrical Characteristics 4.1. Absolute Maximum Ratings Ambient temperature 0oC to 70oC Storage temperature -40oC to 125oC DC supply voltage 3.0V to 3.6V I/O pin voltage with respect to VSS -0.3V to VDD + 0.3V TABLE 4.1 ABSOLUTE MAXIMUM RATINGS 4.2. DC Characteristics Symbol Parameter Conditions Min Max Unit VDD3V 3.3V Power Supply 3.0 3.6 V VDD2V 2.5V Power Supply 2.25 2.75 V Vil Input Low voltage -0.5 1.0 V Vih Input High voltage 2.3 5.5 V Vol Output Low Voltage - 0.4 V Voh Output High Voltage 2.4 - V Ipd Suspend current - 500 uA Ido Active current - 80 mA TABLE 4.2 DC CHARACTERISTICS 4.3. USB Transceiver AC Characteristics Symbol Parameter Conditions Min Typ Max Unit TFR Rise time CL=50p 4 20 ns TFF Fall time CL=50p 4 20 ns TFRFF Rise and fall time matching TLRLF=TLR/TLF 90 111.11 TABLE 4.3 FULL-SPEED DRIVER ELECTRICAL CHARACTERISTICS Symbol Parameter Conditions Min Typ Max Unit TLR Rise time CL=50p CL=600p 300 ns TLF Fall time CL=50p CL=600p 300 ns