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empia technology proprietary and confidential 1 2/01/2004 empia technolo gy EM2710 usb pc cam device hardware specification
empia technology proprietary and confidential 2 2/1/2004 EM2710 advanced information disclaimer empia technology reserves the right to make changes in the device data identified in this publication without further notice. empia technology advises its customers to obtain the latest version of all device data to verify that any information being relied upon by the customer is current and accurate. empia technology does not assume any liability arising out of or associated with the application or use of any product or integrated circuit or component described herein. empia technology does not convey any license under its patent rights or the patent rights of others described herein. in the absence of a written or prior stated agreement to the contrary, the terms and conditions stated on the back of the empia technology order acknowledgment obtain. empia technology makes no warranty of any kind with regard to this material, including, but not limited to the implied warranties of merchantability and fitness for a particular purpose. empia technology products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other applications intended to support or sustain life, or for any nuclear facility application, or for any other application in which the failure of the empia technology product(s) could create a situation where personal injury or death may occur. empia technology will not knowingly sell its products for use in such applications, and the buyer shall indemnify and hold harm-less empia technology and its officers, employees, subsidiaries, affiliates, representatives, and distributors against all claims, costs, damages, expenses, tort, and attorney fe es arising out of directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that empia technology was negligent regarding the design or manufacture of the part.
empia technology proprietary and confidential 3 2/1/2004 EM2710 advanced information features no external memory required flexible video input port 8-bit video input port programmable video timing generator generate clock, h-sync and v-sync for cmos sensor bayer rgb color processor black clamping gamma correction bayer pattern filtering gain and offset adjustment in rgb space support for auto exposure and white balance defect pixel compensation compressing engine proprietary, high-quality compression programmable compression rate audio interface support ac97 codec software direct access to ac97 codec registers support audio sample rates of 48k, 44.1k, 32k, 22.05k, and 8k. usb port integrated usb 2.0 phy with high-speed and full-speed transceivers second generation usb 2.0 phy with reduced power usb 2.0 and 1.1 compliant support iso-chronous audio pipe up to 0.2 mb/sec support iso-chronous video pipe up to 24 mb/sec support bulk video pipe eeprom interface support 128-byte or 256-byte 2-wire serial eeprom use eeprom to store chip configurations and usb descriptors customized vendor id and product id customized vendor string, product string, and serial number string software may use eeprom to store board configurations software may use eeprom to store defect pixel coordinates miscellaneous 2-wire serial bus to program front-end video/audio devices
empia technology proprietary and confidential 4 2/1/2004 EM2710 advanced information power-down control to front-end video/audio devices 8 general-purposed i/o ports snap shot button input led control output 0.25 micron, 2.5v core, 3.3v i/o cmos process 64-pin lqfp package
empia technology proprietary and confidential 5 2/1/2004 EM2710 advanced information functional block diagram video source video interface serial interface stream buffer video pipeline EM2710 sie usb audio source usb 2.0 phy a udio interface
empia technology proprietary and confidential 6 2/1/2004 EM2710 advanced information general description EM2710 usb video capture device (uvcd) is a highly in tegrated vlsi that provides a cost-effective solution for video capture applications on usb 2.0. typical applications of this device are: ? cmos pc-camera as illustrated in the functional block diagram, an usb video subsystem consists of the uvcd, a video source, and optionally an audio source. the audio source can be an ac97 codec. the usb host configures (programs) the video/audio source via the 2-wire serial bus or the ac97-link. source video stream is transferred to the uvcd via the 8-bit video bus. source audio stream is transferred to the uvcd via the ac97-link. as shown in the functional block diagram, the uvcd consists of 7 main blocks. ? video interface ? video pipeline ? audio interface ? stream buffer ? serial interface engine ? usb 2.0 phy ? 2-wire serial interface video interface the video interface block receives video data from external video source. video clock (vclk) and reference signals (vref, href) from the video source are used to strobe incoming video data. ccir-656 with embedded fid, vref and href is also supported. from the incoming video, a rectangular video sub-block is selected for feeding the next block, video pipeline. the video interface block also includes a video timing generator that generates href and vref for slave- mode cmos sensor. video pipeline the video pipeline block performs the following operations. ? black clamping ? gamma correction ? rgb gain and offset ? defect pixel compensation ? up-sampling 8-bit bayer to 24-bit rgb, ? color space conversion to yuv, ? pixel accumulation for ae and awb ? down scaling ? sharpness enhancement ? contrast, brightness, and saturation adjustments ? uv offset adjustments ? output formatting ? image compression
empia technology proprietary and confidential 7 2/1/2004 EM2710 advanced information after the above operations, the compressed video is stored into the stream buffer. audio interface the audio interface block contains an ac97 controller. enabled by configuration settings in eeprom or cfg3. the ac97 controller interfaces with an external ac97 codec via 4-wire ac97-link. supported audio sample rates are 48k, 44.1k, 32k, 22.05k, and 8k. the audio interface block converts the serial audio input to pcm16 format and stores into the stream buffer. stream buffer the stream buffer stores the final audio and video data and delivers the data to the sie upon request. the stream buffer is designed to sustain 24 mb/sec iso-chronous video transfer and 0.2 mb/sec iso-chronous audio transfer. serial interface engine the serial interface engine can be divided into 2 sub-blocks: the sie controller on the front end and the endpoint logic on the back end. the sie contro ller manages usb packets and transactions. the endpoint logic implements endpoint specific logic required for video capture application. the sie communicates with the usb 2.0 phy via utmi bus. the uvcd complies with usb power management standard. when the usb bus stays idle for 3 mini seconds, the chip enters suspend mode and shuts down all internal clocks. the chip also sends out a power-down signal to external devices. usb 2.0 phy the usb 2.0 phy includes 12-mhz full-speed transceiver s, 480-mhz high-speed transceivers, a pll, and an utmi controller. the transceivers are compliant to the usb 2.0 electrical specification. the pll supplies clocks to the entire chip. the utmi controller communicates with the sie. the phy has been optimized for low power. furthermore, the phy can be suspended by the sie to conserve power. serial port and general i/o port the uvcd uses a two-wire serial bus to communicate with cmos sensor or ntsc decoder. the serial port consists of scl (clock) and sda (data). both are open-col lector bi-directional ports. external pull-up resistors are required on both lines. there are 8 general i/o ports. all general i/o ports are o pen-collector bi-directional pins. if a port is intended for output, it must be tied to external pull-up resistors.
empia technology proprietary and confidential 8 2/1/2004 EM2710 advanced information pin assignments 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 agnd rpu dmrs dprs avcc3 agnd avcc3 gnd vid0 vcc2 vid1 vid2 vid3 gnd vid4 vid5 pw_down led snap rn fid pio7 vcc2 pio6 gnd pio5 gnd pio4 sdo sync bclk gnd vcc3 sdi pio3 pio2 pio1 pio0 gnd sda scl vref href xclk vclk vid7 vcc3 vid6 gnd wsel testmode extphy vcc3 clkint uclki vcc2 gnd xsci xsco vcc3 agnd rref dm dp EM2710 empia
empia technology proprietary and confidential 9 2/1/2004 EM2710 advanced information pin descriptions video interface symbol pin no. type description xclk 21 o video synchronous clock output vclk 20 i video reference clock from video source vref 23 b vertical reference (sync) signal from video source in input mode. video timing generator vertical reference output in output mode. href 22 b horizontal reference (sync) signal from video source in input mode. video timing generator horizontal reference output in output mode. fid 44 i field id from video source vid7 19 i video input data, bit 7 vid6 17 i video input data, bit 6 vid5 16 i video input data, bit 5 vid4 15 i video input data, bit 4 vid3 13 i video input data, bit 3 vid2 12 i video input data, bit 2 vid1 11 i video input data, bit 1 vid0 9 i video input data, bit 0 audio interface symbol pin no. type description bclk 34 i ac97 bit clock sdi 31 i ac97 serial data input sync 35 o ac97 48 khz fixed rate sample sync sdo 36 o ac97 serial data output wsel 50 i reserve usb interface symbol pin no. type description dp 64 b usb high-speed differential data positive dm 63 b usb high-speed differential data negative dprs 4 b usb full-speed differential data positive, connected to external serial resistor (39 ohm, 1%). dmrs 3 b usb full-speed differential data negative, connected to external serial resistor (39 ohm, 1%). rref 62 analog connect external reference resistor (12.1 kohm, 1%) to analog ground rpu 2 analog connect external resistor (1.5 kohm, 1%) to 3.3v analog power xsci 58 analog crystal oscillator input 12 mhz xsco 59 analog crystal oscillator output 12 mhz
empia technology proprietary and confidential 10 2/1/2004 EM2710 advanced information serial bus and programmable i/o symbol pin no. typ description scl 24 b serial bus clock, open-drain, require external pull-up resistor. sda 25 b serial data, open-drain, require external pull-up resistor. pio7 43 b general i/o port 0, require external pull-up resistor in output mode. pio6 41 b general i/o port 1, require external pull-up resistor in output mode. pio5 39 b general i/o port 2, require external pull-up resistor in output mode. pio4 37 b general i/o port 3, require external pull-up resistor in output mode. pio3 30 b general i/o port 4, require external pull-up resistor in output mode. pio2 29 b general i/o port 5, require external pull-up resistor in output mode. pio1 28 b general i/o port 6, require external pull-up resistor in output mode. pio0 27 b general i/o port 7, require external pull-up resistor in output mode. miscellaneous symbol pin no. typ description rn 45 i chip reset input. active low. connect to power-up rc circuit. snap 46 i connect to snapshot button led 47 o connect to led pw_dow 48 o power down external devices. testmo 51 i put the chip in test mode. normally tie to gnd extphy 52 i select and use external phy. normally tie to gnd clkint 54 i select and use internal pll. normally tie to 3.3v vcc uclki 55 i chip clock input when clkint=0. normally tie to gnd power and ground symbol pin no. type description avcc3 5,7 power 3.3v analog power agnd 1, 6, 61 ground analog ground vcc3 18, 32, 53, 60 power 3.3v digital power vcc2 10, 42, 56 power 2.5v digital power gnd 8, 14,26,33 38,40,49,57 ground digital ground
empia technology proprietary and confidential 11 2/1/2004 EM2710 advanced information eeprom data structure eeprom contains hardware configuration information. after reset by rn, the uvcd reads the eeprom and uses the information to configure the chip. the first fo ur bytes of the eeprom are key to the eeprom. if the eeprom is absent or the key is invalid, the uvcd is configured with a set of default values. addr. data definition default 00h key byte 0 = 1ah - 01h key byte 1 = ebh - 02h key byte 2 = 67h - 03h key byte 3 = 95h - 04h usb vendor id low byte 1ah 05h usb vendor id high byte ebh 06h usb product id low byte * 07h usb product id high byte * 08h chip configuration low byte d[7:6] reserved. set to 0. d[5:4] audio configuration 00 ? no audio on board. 01 ? ac97 audio on board with 5 sample rates: 48k, 44.1k, 32k, 22.05k, and 8k. 10 ? reserved. 11 ? reserved. d[3] usb remote wakeup capable when set to 1 d[2] usb self power capable when set to 1. if the chip is configured to be self power capable, pio7 becomes self power status input. d[1:0] usb max power select 00 ? usb max power 500 ma 01 ? usb max power 400 ma 10 ? usb max power 300 ma 11 ? usb max power 200 ma ** 09h chip configuration high byte reserved. set to 0. 00h 0ah board configuration low byte to be defined by software architect 00h 0bh board configuration high byte to be defined by software architect 00h 0ch string 1 descriptor pointer starting address of string 1 descriptor in the eeprom 00h 0dh string 1 descriptor length number of bytes of string 1 descriptor in the eeprom 00h 0eh string 2 descriptor pointer starting address of string 2 descriptor in the eeprom 00h 0fh string 2 descriptor length number of bytes of string 2 descriptor in the eeprom 00h 10h string 3 descriptor pointer starting address of string 3 descriptor in the eeprom 00h 11h string 3 descriptor length number of bytes of string 3 descriptor in the eeprom 00h 12h string index table d[7:6] reserved. set to 0. d[5:4] serial number string descriptor index d[3:2] product string descriptor index d[1:0] vendor string descriptor index 00h
empia technology proprietary and confidential 12 2/1/2004 EM2710 advanced information note: * default product id is listed below: chip type product id (w.o. audio) product id (w. audio) EM2710 2710h 2711h ** default chip configuration low byte = 00h if pio7 is pulled down with a resistor. default chip configuration low byte = 10h if pio7 is pulled up with a resistor.
empia technology proprietary and confidential 13 2/1/2004 EM2710 advanced information electrical specifications absolute maximum ratings parameter min max unit power supply voltage -0.3 v cc +0.3 v voltage on any input -0.3 5.5 v operating temperature (ambient) 0 70 o c storage temperature -40 150 o c note: 1. stress beyond those listed may cause permanent damage to the device. 2. input pins are 5v tolerant. dc characteristics symbol parameter conditions min typ max unit v cc2 core supply voltage 2.25 2.5 2.75 v v cc3 i/o supply voltage 3.0 3.3 3.6 v v cca analog supply voltage 3.0 3.3 3.6 v v ih input high voltage v cc3 = 3.3v 2.0 v v il input low voltage v cc3 = 3.3v 0.8 v v oh output high voltage 2.4 v v ol output low voltage 0.4 v i cc operating supply current 120 ma i ccs suspend supply current 250 a c in input capacitance 3.5 pf c out output capacitance 3.5 pf ac characteristics symbol parameter min typ max unit f xtal crystal frequency at xsci, xsco 12 mhz
empia technology proprietary and confidential 14 2/1/2004 EM2710 advanced information serial bus timing conditions: 100 khz scl; 4.7 kohm pull up; 100 pf load; symbol parameter min typ max unit f scl scl frequency 100 khz t scl_low scl low pulse width 4.7 s t scl_high scl high pulse width 4.0 s t osc sda to scl output delay at start and stop 4.0 7.0 s t osd scl to sda output delay at start and stop 4.0 7.0 s t sda_od sda output delay 4.0 7.0 s t sda_su sda input setup time 0 ns t sda_hd sda input hold time 100 ns t sda_hd t sda_su t sda_od scl sda in sda out t osc t osd t scl_low t scl_high start stop sda serial write cycle start msb device address lsb write ack one or more register addr one or more write data ack ack stop sda serial read cycle start msb device address lsb write ack one or more register addr one or more read data ack or nack ack stop start msb device address lsb read ack nack the last read data and ack all others
empia technology proprietary and confidential 15 2/1/2004 EM2710 advanced information video interface timing conditions: 50 pf load symbol parameter min typ max unit f vclk vclk frequency 29 mhz t vc_low vclk low pulse width 15 ns t vc_high vclk high pulse width 15 ns t v_od video output delay 0 10 ns t v_su video input setup time 10 ns t v_hd video input hold time 10 ns t v_hd t v_su t v_od vclk vid[7:0], fid vref in href in t vc_low t vc_high vref out href out
empia technology proprietary and confidential 16 2/1/2004 EM2710 advanced information ac97-link timing conditions: 50 pf load symbol parameter min typ max unit f bclk bclk frequency 12.288 mhz f sync sync frequency 48 khz t bc_low bclk low pulse width 36 45 ns t bc_high bclk high pulse width 36 45 ns t a_od ac97 data output delay 0 15 ns t a_su ac97 data input setup time 10 ns t a_hd ac97 data input hold time 10 ns t a_hd t a_su t a_od bclk sdi t bc_low t bc_high sync, sdo
empia technology proprietary and confidential 17 2/1/2004 EM2710 advanced information packaging information 64-pin lqfp mechanical drawing

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