ADNS-7050

ADNS-7050 Laser Mouse Sensor Data Sheet Description Features The Avago Technologies ADNS-7050 sensor along with the ADNS-6120 or ADNS-6130-001 lens, ADNS-6130-001 clip and ADNV-6340 VCSEL form a complete and laser mouse tracking system. It is the laser illuminated system enabled for cordless application. Powered by Avago Technologies LaserStreamTM technology, it can operate on many surface that proved difficult for traditional LEDbased optical navigation. It’s low power architecture is capable of sensing mouse motion while prolonging battery life, two performance areas essential in demanding cordless applications. x Low power architecture There is no moving part, in the complete assembly for ADNS-7050 laser mouse system, thus it is high reliability and less maintenance for the end user. In addition, precision optical alignment is not required, facilitating high volume assembly. x Selectable 400 and 800 cpi resolution Theory of Operation x New LaserStream™ technology x Self-adjusting power-saving modes for longest battery life x Speed motion detection up to 20 ips and 8g x Enhanced SmartSpeed self-adjusting frame rate for optimum performance x Motion detect pin output x Internal oscillator – no clock input needed x Wide operating voltage: 2.7 V-3.6 V nominal x Four wire serial port x Minimal number of passive components x Laser fault detect circuitry on-chip for Eye Safety Compliance The ADNS-7050 is based on LaserStream™ Technology, which measures changes in position by optically acquiring sequential surface images (frames) and mathematically determining the direction and magnitude of movement. Applications The ADNS-7050 contains an Image Acquisition System (IAS), a Digital Signal Processor (DSP), and a four wire serial port. The IAS acquires microscopic surface images via the lens and illumination system. These images are processed by the DSP to determine the direction and distance of motion. The DSP calculates the ∆x and ∆y relative displacement values. An external microcontroller reads the ∆x and ∆y information from the sensor serial port. The microcontroller then translates the data into PS2, USB, or RF signals before sending them to the host PC or game console. x Battery-powered input devices x Laser mice x Optical trackballs x Integrated input devices Pinout of ADNS-7050 Optical Mouse Sensor Pin Name Description 1 NCS Chip Select (Active Low Input) 2 MISO Serial Data Output (Master In/Slave Out) 3 SCLK Serial Clock Input 4 MOSI Serial Data Input (Master Out/Slave In) 5 MOTION Motion Detect (Active Low Output) 6 LASER_NEN LASER Enable (Active LOW) 7 GND Ground 8 XY_LASER LASER Control 9 AGND Analog Ground 10 AVDD Analog Supply Voltage 11 AGND Analog Ground 12 GND Ground 13 GND 14 NC No Connection 15 GND Ground 16 VDD Supply Voltage 17 NC No Connection 18 NC No Connection 2 Ground 18 NC 1 NCS 17 NC 2 MISO 3 SCLK A7050 XYYWWZ 16 VDD 15 GND 4 MOSI 14 NC 5 MOTION 13 GND 6 LASER_NEN 12 GND 7 GND 11 AGND 8 XY_LASER 10 AVDD 9 AGND Figure 1. Package outline drawing (top view). A70 50 Figure 2. Package outline drawing. CAUTION: It is advised that normal static precautions be taken in handling and assembly of this component to prevent damage and/or degradation which may be induced by ESD. 3 Overview of Laser Mouse Sensor Assembly 31.17 (1.227) A7050 XYYWWZ 16.00 (0.630) BASE PLATE TOP OF PCB TO BOTTOM OF SENSOR 3.20 (0.126) VCSEL PCB CLIP SENSOR 3.75 (0.148) TOP OF PCB TO TOP OF LENS FLANGE 2.40 (0.094) BOTTOM OF LENS FLANGE TO SURFACE PCB 20.49 (0.807) SURFACE Figure 3. 2D Assembly drawing of ADNS-7050 (top and cross-sectional view). 4 15.37 (0.605) SURFACE TO VCSEL BODY 2D Assembly Drawing of ADNS-7050, PCBs and Base Plate ADNS-7050 (SENSOR) CUSTOMER SUPPLIED VCSEL PCB ADNV-6340 (VCSEL) USTOMER SUPPLIED PCB ADNS-6230-001 (CLIP) ADNS-6130-001 (LENS)* R SUPPLIED BASE PLATE OMMENDED FEATURES DRAWING S-6120 FOR ROUND LENS Figure 4. Exploded view drawing. Shown with ADNS-6130-001 Laser Mouse Lens, ADNS6230-001 VCSEL Assembly Clip and ADNV-6340 VCSEL. The components interlock as they are mounted onto defined features on the base plate. The ADNS-7050 laser mouse sensor is designed for mounting on a through hole PCB, looking down. There is an aperture stop and features on the package that align to the lens. The ADNV-6340 VCSEL is recommended for illumination, provides a laser diode with a single longitudinal and a single transverse mode. It is particularly suited as lower power consumption and highly coherent replacement of LEDs. It also provides wider operation range while still remaining within single-mode, reliable operating conditions. The ADNS-6120 or ADNS-6130-001 Laser Mouse Lens is designed for use with ADNS-7050 sensor and the illumination subsystem provided by the assembly clip and 5 the VCSEL. Together with the VCSEL, the lens provides the directed illumination and optical imaging necessary for proper operation of the Laser Mouse Sensor. ADNS6120 and ADNS-6130-001 are precision molded optical components and should be handled with care to avoid scratching of the optical surfaces. ADNS-6120 also has a large round flange to provide a long creepage path for any ESD events that occur at the opening of the base plate. The ADNS-6230-001 VCSEL Assembly Clip is designed to provide mechanical coupling of the ADNV-6340 VCSEL to the ADNS-6120 or ADNS-6130-001 lens. This coupling is essential to achieve the proper illumination alignment required for the sensor to operate on a wide variety of surfaces. Avago Technologies provides an IGES file drawing describing the base plate molding features for lens and PCB alignment. 0.89 (0.035) 18X ∅ 0.75 RECOMMENDED (0.030) 0.2 (0.008) 6X R 0.75 MAX. (0.030) OPTICAL NAVIGATION CENTER 22.6 (0.890) 12.6 (0.496) 11.0 (0.433) 12.6 (0.496) 6.3 (0.248) 0 (0.000) 0 10.0 (0.394) 1.6 (0.063) PIN 1 HOLE 0 1.78 (0.070) 14.84 (0.584) 15.15 (0.596) 2 mm MAX. COMPONENT HEIGHT CLEAR ZONE 2 mm MAX. COMPONENT HEIGHT RECOMMENDED FINGER CLEARANCE ZONE (BOTH SIDES) 25.0 (0.984) 36.0 (1.417) DIMENSIONS IN MILLIMETERS (INCHES). Figure 5. Recommended PCB mechanical cutouts and spacing. Assembly Recommendation x Insert the sensor and all other electrical components into the application PCB (main PCB board and VCSEL PCB board). x Wave-solder the entire assembly in a no-wash solder process utilizing a solder fixture. The solder fixture is needed to protect the sensor during the solder process. It also sets the correct sensor-to -PCB distance, as the lead shoulders do not normally rest on the PCB surface. The fixture should be designed to expose the sensor leads to solder while shielding the optical aperture from direct solder contact. x Place the lens onto the base plate. x Remove the protective kapton tape from the optical aperture of the sensor. Care must be taken to keep contaminants from entering the aperture. x Insert the PCB assembly over the lens onto the base plate. The sensor aperture ring should self-align to the lens. The optical position reference for the PCB is set by the base plate and lens. Note that the PCB motion due to button presses must be minimized to maintain optical alignment. x Remove the protective cap from the VCSEL. x Insert the VCSEL assembly into the lens. 6 x Slide the clip in place until it latches. This locks the VCSEL and lens together. x Tune the laser output power from the VCSEL to meet the Eye Safe Class I Standard as detailed in the LASER Power Adjustment Procedure. x Install the mouse top case. There must be a feature in the top case (or other area) to press down onto the sensor to ensure the sensor and lens are interlocked to the correct vertical height. Design Considerations for Improving ESD Performance For improved electrostatic discharge performance, typical creepage and clearance distance are shown in the table below. Assumption: base plate construction as per the Avago Technologies supplied IGES file and ADNS6130-001 trim lens (or ADNS-6120 round lens). Typical Distance Millimeters Creepage 12.0 Clearance 2.1 Note that the lens material is polycarbonate and therefore, cyanoacrylate based adhesives or other adhesives that may damage the lens should NOT be used. VCSEL PCB VCSEL SENSOR CLIP LENS BASE PLATE PCB SURFACE Figure 6. Sectional view of PCB assembly highlighting optical mouse components. Key Mode Selection VCC R1 LD2 CPI_LED R1 100K 5 Key Not Mounted Mounted 3 Key V3.3 CPI 1 R9 10K VCC Z1 Z Encoder U1 2 3 1 XT1 Z Axis 2 6MHz 3 4 ZA 5 ZB 6 NCS 7 MISO 8 SCLK 9 MOSI R2 100K R3 10ohm 10 VDD VC XI DP_CK XO DM_DA VSS PC0 PA6 PA0 PA7 PA1 PB0 PA2 PB1 PA3 PB2 PA4 PB3 PA5 LD2 Flash Freq 2Hz 600 CPI R8 330 ohm C2 10uF Buttons Not Mounted CPI-LED VCC C1 0.1uF R2 Mounted V3.3 VCC 800 CPI 6Hz 1200 CPI 12Hz 20 JP1 19 GND VCC GND 18 17 16 KEY_EPROMCS 15 LB * C4 VCC *C5 100pF S1 SWL 1 2 3 4 5 + C3 4.7uF C6 0.1uF 100pF USB/PS2 Connector S2 SWR 14 RB 13 MB 12 B4_UP S3 SWM 11 S4 B4 S5 B5 B5_DN SPCP825A-20 Pin OTP 4th/5th Buttons by Straps Optional SPCP18A-016A Mask VCC S6 V3.3 LB RB Laser PWR ISS-BT 1 V3.3 Dig ital PWR ISS-SW (Optional) Analog PWR C8 0.1uF 3 C7 4.7uF 2 2N3 906 Q1 + SPY0029A TO-89 3 Vout 1 + C15 0.1uF 4 1 5 3.3V Regulator Optional 16 AGND AGND MISO MOSI NCS MOTION Optional unused --> R3 Mounted; U3; C14; C15 Not Mounted U4 KEY_EPROMCS SCLK MOSI MISO 1 2 3 4 CS SK DI DO 18 VCC NC ORG GND 8 7 6 5 17 C16 0.1uF 93C46 16 9 R7 2K GND GND GND NC XY_ LASER NC LASER_NEN NC LASER_GND 12 13 15 8 6 7 Sunplus Title 7 C13 470pF 11 EEPROM for Laser Eye Safety for Sun+ ALPC Figure 7a. Schematic diagram for 3-button scroll wheel corded mouse. C11 1uF SCLK V3.3 Optional used --> R3 Not Mounted. U3; C14; C15 Mounted LD1 VCSEL + C losed to Sens or D GN D ADNS-7050 3 2 C14 4.7uF + 1uF REGULATOR Vin Vss U3 C losed to Sens or AGN DC12 2 V3.3 2 C9 0.1uF C10 0.1uF 10 U2 VDD R6 22K AVDD VCC R5 22K 1 C losed to Sens or R4 22K MCUVCC SW1 LB C41 0.1 uF HEADER_8X2 RFVCC NCS 1 MISO 2 SCLK 3 ** MOSI 4 ** C26 C25 0.0 1uF 16 10 SCLK MOSI 5 MOTION D3 1N5819 14 R27 10 U5 3 XC6383A-301PR Lx 1 C48 47uF + 17 MCUVCC C50 0.1 uF 1 C49 0.1 uF BT1 +3V RFVCC 3.0 V 2 Vout Vss L5 100uH DVDD C51 0.1 uF R29 10 LVDD R30 10 AVDD 1 C47 470pF 11 AGND MISO 0.0 1uF 2 C45 1uF 2 AGND **Not Mounted if good signal quality 1 LD1 VCSEL + 9 NCS 3 SW6 Z Encoder C46 + 1uF VDD AVDD U4 2 1% 2 3 MCUVCC 1 3 5 7 9 11 13 15 18 R26 4.7 K ADNS-7050 2 4 6 8 10 12 14 16 1 C52 2200pF C42 Q1 1uF C43 0.1 uF C44 0.1 uF J2 SW3 MB R28 120K 2N3906 + AVDD SW2 RB SW7 BIND 1 LVDD DVDD 15 GND 12 GND 13 GND NC XY_LASER NC LASER_NEN 8 6 NC 7 LASER_GND 2 5% Sunplus Title A7050 Sensor Board ENG. AP: Drawn: Size B D ate: Check By: D.C. Rev PA1 Document Number 2.4 GHZ-1W-MSE-MC02A-A7050-TX Thursday, December 22 , 200 5 Sheet 2 of 2 MCUVCC MCUVCC MCUVCC ** CS SK DI DO 8 7 6 5 VCC DC NC GND R13 10 = Not mounted if 3 pin resonator U3 EEPROM_CS 1 SCLK 2 MOSI 3 MISO 4 ** C34 0.1uF U2 C33 20pF C35 0.1uF 24 XT1 8MHz 93C46 ** VDD 23 Clo sed to MCU R18 2M 4 OSCO 5 OSCI C36 20pF EEPROM_CS RF_CS NCS NTEST RF_PWR RF_CE MOTION ALPC E/D PA0 PA1 PA2 PA3 PA4 PA5 PA6 PA7 GND 13 16 2 27 14 15 1 28 PB0 PB1 PB2 PB3 PB4 PB5 PB6 PB7 PC0 PC1 PC2 PC3 PC4 PC5 PC6 PC7 21 20 19 18 10 9 8 7 LB RB MB WAKE_UP ZA ZB SCLK MOSI 11 25 26 3 6 22 12 17 MISO DIR1 BAT DIR2 CPI_LE D BIND B4_UP B5_DN R31 1M R14 2M LD2 BAT_LOW R8 330 ohm R5 R6 0 10K C15 0.22uF (TBD) (TBD) R10 1M SW4 SW5 B4_UP B5_DN R20 1K LD3 CPI-LED Battery Low LED SPMC0 2A-066A R7 10K (TBD) R32 10K VCC R3 0ohm SW6 MCUVCC J22 R21 R22 R23 R24 330 330 330 330 1 3 5 7 9 11 13 15 RFVCC R11 10 RFVCC R2 22K C6 0.01uF C16 4.7uF + CE 2 13 14 15 VSS ANT2 NRF2402 CLK ANT1 XC1 VSS XC2 7 6 5 ISS-SW (Optional) Power Down SW (Optional) ALPC EN/DISABLE ALPC Enab le Disable C3 22pF 12 C8 TX1 Antenna Clo sed to IC C32 1.2pF L4 2.7~4.7nH C10 0.5pF SCLK 1 Sensor Orientation J6 Sensor Orientatio n 0 degree 90 degree 180 degre e 270 degre e NCS 1 J7 C5 1000 pF X1 LD3 Flash Freq 2Hz 6Hz 12Hz J5 ANT length 32mm width 0.5mm (20mil) Value C9 1.0pF Clo sed to IC CPI 400 CPI 600 CPI 800 CPI MISO 1 L3 Value Clo sed to IC MOSI 1 J4 1.0pF L1 3.6nH 9 CPI-LED J3 11 10 R3 Not Mounted Mounted L2 22nH VDD VSS_PA DIN 8 4 2 4 6 8 10 12 14 16 HEADER_8X2 C4 2200 pF VDD_PA CS 3 C40 22pF ISS-BT PD_SW Clo sed to IC VDD 1 C39 22pF IREF U1 PWR_UP C38 22pF 16 C37 22pF LB RB SW8 EEPROM_CS 1 DIR1(R5 ) Not Mounted Mounted Not Mounted Mount ed DIR2(R6 ) Not Mounted Mounted Mounted Not Mounted DIR2(R7 ) Mounted Not Mounted Not Mounted M ount ed J8 NTEST 1 16MHZ Sunplus ALPC Connection R1 Title 1M C1 22pF C2 22pF 2.4GHz RF ISS Optical Mouse Tx MCU Board ENG. AP: 3.3 Regulator Circuit Optional Drawn: Check By: D.C. D.C. 2.4GHZ-1W-ISS-MSE-MC02A-0 66A-A603 0-TX Rev Docu men t Number PA2 of Friday, Feb ruary 24, 20 06 Shee t 1 2 Size B D ate: R2 22K +V3.3 VCCMCU U4 VO VI 3 +V3.3 GND 2 C15 0.1uF C16 0.1uF C6 0.01uF C5 1000p F C10 4.7uF + 19 VSS 20 22 23 21 VDD VSS VDD IREF ANT2 ANT1 18 1pF 17 16 L1 3.6nH 15 ANT length 63mm width 0.5mm 14 13 C8 1pF XC1 VDD_PA L2 22nH C4 2200p F 12 XC2 DR1 7 R12 22K VSS_PA CS 11 6 VSS 5 RF_DR nRF2401 DOUT2 10 R10 22K RF_CS VDD CLK2 Rx Antenna C9 VSS DR2 CL K1 4 CE DV DD 3 DA TA 2 8 1 RF_CE 9 3.3 Regulator Circuit Not used : U4; C15; C16 Not Moun ted; R19 Mounted R9 22K PWR_UP U1 24 1 SPY0029 C3 22pF C17 Value RF_CLK X1 RF_DATA R13 22K R14 33K R15 33K R17 33K R18 33K 16MHZ C7 0.033uF 20ppm R1 1M C2 22pF C1 22pF RF Band Side +V3.3 VCCMCU VCCMCU R19 10 ohm U2 VCCMCU * 12 11 10 9 RF_DATA RF_CLK RF_CS RF_CE RF_DR R4 100K RFDATA RFCLK RFCS RFCE * R5 100K 1 2 5 6 7 8 MSE Connecto r 1 470 LD1 RF_Data 13 SW1 BIND RFDR 10uF + C13 4.7uF 2 OSCI 3 OSCO SPCP18A-011A C12 0.1uF C11 4 GND KEY BIND/RF SCL SDA XT1 6MHz 16Pin VCCMCU ID Button 3 / 5 Bu ttons 3Button s 5 Buttons R4 Not Mou nted Mounted R5 Mounted Not Mou nted Notes: The supply and ground paths should be laid out using a star methodology. Level shifting is required to interface a 5V micro-controller to the ADNS-7050. If a 3V micro-controller is used, the 74VHC125 component shown may be omitted. C14 0.1uF Title U3 8 7 6 5 VCC WP SCL SDA A0 A1 A2 VSS 1 2 3 4 24C01 Figure 7b. Schematic diagram for 3-button scroll wheel cordless mouse. 8 1 2 3 4 16 VC R6 MSE_CLK/D+ MSE_DATA/D- 14 DM_DA VDD VCCMCU J1 15 DP_CK ENG. AP: Size B Date: Sunplus 2.4GHz 1way RF Mouse Receiver Drawn: FrankLin Check By: D.C. Document Number 2.4GHZ-1W-MSE -RX-CP18 A-nRF2401-CR of Thu rsday, December 29, 2005 Sheet 1 2 Rev PA4 LASER Drive Mode LASER Power Adjustment Procedure The laser is driven in pulsed mode during normal operation. A calibration mode is provided which drives the laser in continuous (CW) operation. x The ambient temperature should be 25°C ±5°C. Eye Safety x Set the Range_C complement bit (bit 7 of register 0x1f ) to 1. The ADNS-7050 and the associated components in the schematic of Figure 7 are intended to comply with Class 1 Eye Safety Requirements of IEC 60825-1. Avago Technologies suggests that manufacturers perform testing to verify eye safety on each mouse. It is also recommended to review possible single fault mechanisms beyond those described below in the section “Single Fault Detection”. Under normal conditions, the ADNS-7050 generates the drive current for the laser diode (ADNV-6340). In order to stay below the Class 1 power requirements, LASER_CTRL0 (register 0x1a), LASER_CTRL1 (register 0x1f ), LSRPWR_CFG0 (register 0x1c) and LSRPWR_CFG1 (register 0x1d) must be programmed to appropriate values. The system comprised of the ADNS-7050 and ADNV6340, is designed to maintain the output beam power within Class 1 requirements over components manufacturing tolerances and the recommended temperature range when adjusted per the procedure below and implemented as shown in the recommended application circuit of Figure 7. For more information, please refer to Eye Safety Application Note AN 5230. AGND IMAGE ARRAY DSP SERIAL PORT AND REGISTERS GND POWER AND CONTROL AVDD OSCILLATOR XY_LASER x Set the Range bit (bit 7 of register 0x1a) to 0. x Set the Match_bit (bit 5 of register 0x1a) to the correct value for the bin designation of the laser being used. x Set the Match_C_bit (bit 5 of register 0x1f ) to the complement of the Match_bit. x Enable the Calibration mode by writing to bits [3,2,1] of register 0x1A so the laser will be driven with 100% duty cycle. x Write the Calibration mode complement bits to register 0x1f. x Set the laser current to the minimum value by writing 0x00 to register 0x1c, and the complementary value 0xFF to register 0x1d. x Program registers 0x1c and 0x1d with increasing values to achieve an output power as close to 506uW as possible without exceeding it. If this power is obtained, the calibration is complete, skip to step 14. x If it was not possible to achieve the power target, set the laser current to the minimum value by writing 0x00 to register 0x1c, and the complementary value 0xff to register 0x1d. x Set the Range and Range_C bits in registers 0x1a and 0x1f, respectively, to choose to the higher laser current range. ADNS-7050 VDD x Set VDD to its permanent value. LAZER DRIVE Figure 8. Block diagram of ADNS-7050 optical mouse sensor. NCS SCLK MOSI MISO MOTION LASER_NEN x Program registers 0x1c and 0x1d with increasing values to achieve an output power as close to 506uW as possible without exceeding it. x Save the value of registers 0x1a, 0x1c, 0x1d, and 0x1f in non-volatile memory in the mouse. These registers must be restored to these values every time the ADNS7050 is reset. x Reset the mouse, reload the register values from non-volatile memory, enable Calibration mode, and measure the laser power to verify that the calibration is correct. Good engineering practices such as regular power meter calibration, random quality assurance retest of calibrated mice, etc. should be used to guarantee performance, reliability and safety for the product design. 9 LASER Output Power The laser beam output power as measured at the navigation surface plane is specified below. The following conditions apply: 1. The system is adjusted according to the above procedure. 2. The system is operated within the recommended operating temperature range. 3. The VDD value is no greater than 300mV above its value at the time of adjustment. 4. No allowance for optical power meter accuracy is assumed. Disabling the LASER LASER_NEN is connected to the gate of a P-channel MOSFET transistor which when ON connects VDD to the LASER. In normal operation, LASER_NEN is low. In the case of a fault condition (ground or VDD3 at XY_LASER), LASER_NEN goes high to turn the transistor off and disconnect VDD3 from the LASER. Single Fault Detection ADNS-7050 is able to detect a short circuit or fault condition at the XY_LASER pin, which could lead to excessive laser power output. A path to ground on this pin will trigger the fault detection circuit, which will turn off the laser drive current source and set the LASER_NEN output Parameter Symbol Laser output power LOP Minimum 716 high. When used in combination with external components as shown in the block diagram below, the system will prevent excess laser power for a resistive path to ground at XY_LASER by shutting off the laser. In addition to the ground path fault detection described above, the fault detection circuit is continuously checked for proper operation by internally generating a path to ground with the laser turned off via LASER_NEN. If the XY_LASER pin is shorted to VDD3, this test will fail and will be reported as a fault. Regulatory Requirements x Passes FCC B and worldwide analogous emission limits when assembled into a mouse with shielded cable and following Avago Technologies recommendations. x Passes IEC-1000-4-3 radiated susceptibility level when assembled into a mouse with shielded cable and following Avago Technologies recommendations. x Passes EN61000-4-4/IEC801-4 EFT tests when assembled into a mouse with shielded cable and following Avago Technologies recommendations. x UL flammability level UL94 V-0. x Provides sufficient ESD creepage/clearance distance to avoid discharge up to 15 kV when assembled into a mouse according to usage instructions above. Maximum Units Notes μW Class 1 limit with recommended VCSEL and lens. VDD MICROCONTROLLER ADNS-7050 LASER_NEN VDD FAULT CONTROL BLOCK VCSEL SERIAL PORT XY_LASER VOLTAGE SENSE CURRENT SET GND Figure 9. Single fault detection and eye safety feature block diagram. 10 Absolute Maximum Ratings Parameter Symbol Minimum Storage Temperature TS -40 Lead Solder Temp Supply Voltage VDD -0.5 ESD Input Voltage VIN Latchup Current Iout -0.5 Maximum Units Notes 85 ºC 260 ºC 3.7 V 2 kV All pins, human body model MIL 883 Method 3015 VDD + 0.5 V All Pins 20 mA All Pins For 10 seconds, 1.6 mm below seating plane. Recommended Operating Conditions Parameter Symbol Minimum Operating Temperature TA 0 Power Supply Voltage VDD 2.7 Power Supply Rise Time VRT 1 Supply Noise (Sinusoidal) VNA Serial Port Clock Frequency fSCLK Distance from Lens Reference Z Plane to Surface Typical 2.8 2.18 2.40 Maximum Units 40 ºC 3.6 V Including noise 100 ms 0 to 2.8 V 100 mVp-p 10 kHz - 50 MHz 1 MHz Active drive, 50% duty cycle 2.62 mm Results in ±0.2 mm minimum DOF. See Figure 10. Speed S 20 in/sec Acceleration A 8 g Load Capacitance Cout 100 pF Voltage at XY_LASER Vxy_laser VDD V 0.3 VCSEL PCB SENSOR SENSOR PCB 2.40 (0.094) LENS SURFACE Figure 10. Distance from lens reference plane to surface, Z. 11 CLIP Notes MOTION, MISO AC Electrical Specifications Electrical Characteristics over recommended operating conditions. Typical values at 25 °C, VDD=2.8V. Parameter Symbol Maximum Units Notes Motion Delay suming after Reset tMOT-RST 23 ms From SW_RESET register write to valid motion, as- Shutdown tSTDWN 50 ms From Shutdown mode active to low current Typical ms From Shutdown mode inactive to valid motion. Notes: A RESET must be asserted after a shutdown. Refer to section “Notes on Shutdown and Forced Rest”, also note tMOT-RST s From RESTEN bits set to low current motion is present Wake from Shutdown tWAKEUP Forced Rest Enable Minimum 23 tREST-EN 1 Wake from Forced Rest tREST-DIS 1 s From RESTEN bits cleared to valid motion MISO Rise Time tr-MISO 150 300 ns CL = 100 pF MISO Fall Time tf-MISO 150 300 ns CL = 100 pF MISO Delay after SCLK tDLY-MISO 120 ns From SCLK falling edge to MISO data valid, no load conditions MISO Hold Time thold-MISO 0.5 1/fSCLK μs Data held until next falling SCLK edge MOSI Hold Time thold-MOSI 200 ns Amount of time data is valid after SCLK rising edge MOSI Setup Time tsetup-MOSI 120 ns From data valid to SCLK rising edge SPI Time between Write Commands tSWW 30 μs From rising SCLK for last bit of the first data byte, to rising SCLK for last bit of the second data byte. SPI Time between Write tSWR and Read Commands 20 μs From rising SCLK for last bit of the first data byte, to rising SCLK for last bit of the second addressbyte. SPI Time between Read tSRW and Subsequent tSRR Commands 500 ns From rising SCLK for last bit of the first data byte, to falling SCLK for the first bit of the address byte of the next command. SPI Read Address-Data tSRAD Delay 4 μs From rising SCLK for last bit of the address byte, to falling SCLK for first bit of data being read. NCS Inactive after Motion Burst tBEXIT 500 ns Minimum NCS inactive time after motion burst before next SPI usage NCS to SCLK Active tNCS-SCLK 120 ns From NCS falling edge to first SCLK rising edge SCLK to NCS Inactive (for Read Operation) tSCLK-NCS 120 ns From last SCLK rising edge to NCS rising edge, for valid MISO data transfer SCLK to NCS Inactive (for Write Operation) tSCLK-NCS 20 μs From last SCLK rising edge to NCS rising edge, for valid MOSI data transfer NCS to MISO High-Z tNCS-MISO 500 ns From NCS rising edge to MISO high-Z state MOTION Rise Time tr-MOTION 150 300 ns CL = 100 pF MOTION Fall Time tf-MOTION 150 300 ns CL = 100 pF Transient Supply Current IDDT 45 mA Max supply current during a VDD ramp from 0 to 2.8 V 12 DC Electrical Specifications Electrical Characteristics over recommended operating conditions. Typical values at 25 °C, VDD=2.8 V. Parameter Symbol DC Supply Current in Various Modes IDD_RUN IDD_REST1 IDD_REST2 IDD_REST3 Minimum Typical Maximum Units Notes 4 0.5 0.15 0.05 10 1.8 0.4 0.15 mA Average current, including LASER current. No load on MISO, MOTION. 40 mA 12 μA NCS, SCLK = VDD MOSI = GND MISO = Hi-Z 0.5 V SCLK, MOSI, NCS Peak Supply Current Shutdown Supply Current IDDSTDWN Input Low Voltage VIL 1 Input High Voltage VIH Input Hysteresis VI_HYS 100 Input Leakage Current Ileak ±1 XY_LASER Current ILAS 0.8 LASER Current (Fault Mode) ILAS_FAULT Output Low Voltage, MISO, LASER_NEN VOL Output High Voltage, MISO, LASER_NEN VOH Input Capacitance Cin 13 VDD – 0.5 V SCLK, MOSI, NCS mV SCLK, MOSI, NCS μA Vin = VDD -0.6 V, SCLK, MOSI, NCS mA Vxy_laser ≥ 0.3 V LASER_CTRL0 = 0X80 LASER CTRL1 = 0X20 LP_CFG0 = 0xFF LP_CFG1 = 0x00 300 uA XY_LASER Rleakage < 75 kOhms to GND 0.7 V Iout = 1 mA, MISO, MOTION Iout = 1 mA, LASER_NEN V Iout = -1 mA, MISO, MOTION Iout = -0.5 mA, LASER_NEN pF MOSI, NCS, SCLK ±10 VDD – 0.7 10 Typical Performance Characteristics Typical Resolution vs. Z 1000 Resolution (counts/inches) 900 800 700 600 500 400 1.6 1.7 1.8 1.9 2 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 3 3.1 3.2 3.3 3.4 Distance from Lens Reference Plane to Surface, Z (mm) Photo Paper White Melamine Bookshelf Manila Black Formica White Paper Figure 11. Mean resolution vs. Z at 800 cpi. Maximum Distance (mouse count) Typical Path Deviation Largest Single Perpendicular Deviation From A Straight Line At 45 Degrees Path Length = 4 inches; Speed = 6 ips ; Resolution = 800 cpi 50 45 40 35 30 25 20 15 10 5 0 1.6 1.7 1.8 1.9 2 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 3 3.1 3.2 3.3 3.4 Distance From Lens Reference Plane To Surface, Z (mm) Photo Paper White Melamine Bookshelf Figure 12. Average error vs. distance at 800 cpi . RELATIVE RESPONSIVITY for ADNS-7050 1.0 RELATIVE RESPONSIVITY 0.9 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 0 400 500 600 700 800 WAVELENGTH (nm) Figure 13. Wavelength responsivity. 14 900 1000 Manila Black Formica White Paper Power Management Modes The ADNS-7050 has three power-saving modes. Each mode has a different motion detection period, affecting response time to mouse motion (Response Time). The sensor automatically changes to the appropriate mode, depending on the time since the last reported motion (Downshift Time). The parameters of each mode are shown in the following table. Mode Response Time (nominal) Downshift Time (nominal) Rest 1 16.5 ms 237 ms Rest 2 82 ms 8.4 s Rest 3 410 ms 504 s Motion Pin Timing The motion pin is a level-sensitive output that signals the micro-controller when motion has occurred. The motion pin is lowered whenever the motion bit is set; in other words, whenever there is data in the Delta_X or Delta_Y registers. Clearing the motion bit (by reading Delta_X and Delta_Y, or writing to the Motion register) will put the motion pin high. LASER Mode For power savings, the VCSEL will not be continuously on. ADNS-7050 will flash the VCSEL only when needed. Synchronous Serial Port The synchronous serial port is used to set and read parameters in the ADNS-7050, and to read out the motion information. The port is a four-wire port. The host micro-controller always initiates communication; the ADNS-7050 never initiates data transfers. SCLK, MOSI, and NCS may be driven directly by a micro-controller. The port pins may be shared with other SPI slave devices. When the NCS pin is high, the inputs are ignored and the output is tri-stated. The lines that comprise the SPI port: SCLK: Clock input. It is always generated by the master (the microcontroller). MOSI: Input data. (Master Out/Slave In) MISO: Output data. (Master In/Slave Out) NCS: Chip select input (active low). NCS needs to be low to activate the serial port; otherwise, MISO will be high Z, and MOSI & SCLK will be ignored. NCS can also be used to reset the serial port in case of an error. Chip Select Operation The serial port is activated after NCS goes low. If NCS is raised during a transaction, the entire transaction is aborted and the serial port will be reset. This is true for all transactions. After a transaction is aborted, the normal address-to-data or transaction-to-transaction delay is still required before beginning the next transaction. To improve communication reliability, all serial transactions should be framed by NCS. In other words, the port should not remain enabled during periods of non-use because ESD and EFT/B events could be interpreted as NCS 1 2 3 4 5 6 7 8 9 10 11 12 13 A6 A5 A4 A3 A2 A1 A0 D7 D6 D5 D4 D3 14 15 16 1 2 SCLK MOSI 1 MISO MOSI DRIVEN BY MICRO-CONTROLLER Figure14. Write operation. SCLK MOSI thold, MOSI tsetup, MOSI Figure 15. MOSI setup and hold time. 15 D2 D1 D0 1 A6 Read Operation serial communication and put the chip into an unknown state. In addition, NCS must be raised after each burstmode transaction is complete to terminate burst-mode. The port is not available for further use until burst-mode is terminated. A read operation, defined as data going from the ADNS7050 to the micro-controller, is always initiated by the micro-controller and consists of two bytes. The first byte contains the address, is sent by the micro-controller over MOSI, and has a “0” as its MSB to indicate data direction. The second byte contains the data and is driven by the ADNS-7050 over MISO. The sensor outputs MISO bits on falling edges of SCLK and samples MOSI bits on every rising edge of SCLK. Write Operation Write operation, defined as data going from the microcontroller to the ADNS-7050, is always initiated by the micro-controller and consists of two bytes. The first byte contains the address (seven bits) and has a “1” as its MSB to indicate data direction. The second byte contains the data. The ADNS-7050 reads MOSI on rising edges of SCLK. NCS SCLK CYCLE # 1 2 3 4 5 6 7 A6 A5 A4 A3 A2 A1 8 9 10 11 12 13 14 15 16 SCLK 1 MOSI A0 D7 MISO D6 D5 D4 D3 D2 D1 D0 tSRAD DELAY Figure 16. Read operation. SCLK tHOLD-MISO tDLY-MISO MISO D0 Figure 17. MISO delay and hold time. Note: The 0.5/fSCLK minimums high state of SCLK is also the minimum MISO data hold time of the ADNS-7050. Since the falling edge of SCLK is actually the start of the next read or write command, the ADNS-7050 will hold the state of data on MISO until the falling edge of SCLK. Required Timing Between Read and Write Commands There are minimum timing requirements between read and write commands on the serial port. tSWW SCLK ADDRESS DATA WRITE OPERATION Figure 18. Timing between two write commands. 16 ADDRESS DATA WRITE OPERATION If the rising edge of the SCLK for the last data bit of the second write command occurs before the required delay (tSWW ), then the first write command may not complete correctly. If the rising edge of SCLK for the last address bit of the read command occurs before the required delay (tSWR), the write command may not complete correctly. tSWR  SCLK ADDRESS DATA ADDRESS  WRITE OPERATION NEXT READ OPERATION Figure 19. Timing between write and read commands. tSRW & tSRR tSRAD  SCLK ADDRESS DATA ADDRESS  READ OPERATION NEXT READ or WRITE OPERATION Figure 20. Timing between read and either write or subsequent read commands. During a read operation SCLK should be delayed at least tSRAD after the last address data bit to ensure that the ADNS-7050 has time to prepare the requested data. The falling edge of SCLK for the first address bit of either the read or write command must be at least tSRR or tSRW after the last SCLK rising edge of the last data bit of the previous read operation. Burst Mode Operation Burst mode is a special serial port operation mode that may be used to reduce the serial transaction time for a motion read. The speed improvement is achieved by continuous data clocking to or from multiple registers without the need to specify the register address, and by not requiring the normal delay period between data bytes. Burst mode is activated by reading the Motion_Burst register. The ADNS-7050 will respond with the contents of the Motion, Delta_X, Delta_Y, SQUAL, Shutter_Upper, Shutter_Lower, and Maximum_Pixel registers in that order. The burst transaction can be terminated anywhere in the sequence after the Delta_X value by bringing the NCS pin high. After sending the register address, the micro-controller must wait tSRAD and then begin reading data. All data bits can be read with no delay between bytes by driving SCLK at the normal rate. The data are latched into the output buffer after the last address bit is received. After the burst transmission is complete, the micro-controller must raise the NCS line for at least tBEXIT to terminate burst mode. The serial port is not available for use until it is reset with NCS, even for a second burst transmission. tSRAD  SCLK MOTION_BURST REGISTER ADDRESS READ FIRST BYTE  FIRST READ OPERATION Figure 21. Motion burst timing. 17 READ SECOND BYTE READ THIRD BYTE Notes on Power-up Notes on Shutdown and Forced Rest The ADNS-7050 does not perform an internal power up self-reset; the POWER_UP_RESET register must be written every time power is applied. The appropriate sequence is as follows: The ADNS-7050 can be set in Rest mode through the Configuration_Bits register (0x11). This is to allow for further power savings in applications where the sensor does not need to operate all the time. 1. Apply power The ADNS-7050 can be set in Shutdown mode by writing 0xe7 to register 0x3b. The SPI port should not be accessed when Shutdown mode is asserted, except the power-up command (writing 0x5a to register 0x3a). (Other ICs on the same SPI bus can be accessed, as long as the sensor’s NCS pin is not asserted.) The table below shows the state of various pins during shutdown. To deassert Shutdown mode: 2. Drive NCS high, then low to reset the SPI port 3. Write 0x5a to register 0x3a 4. Wait for tWAKEUP 5. Write 0xFE to register 0x28 6. Read from registers 0x02, 0x03, and 0x04 (or read these same 3 bytes from burst motion register 0x42) one time regardless of the motion pin state. During power-up there will be a period of time after the power supply is high but before any clocks are available. The table below shows the state of the various pins during power-up and reset. 1. Write 0x5a to register 0x3a. 2. Wait for tWAKEUP. 3. Write 0xFE to register 0x28. 4. Any register settings must then be reloaded. State of Signal Pins after VDD is Valid Pin On Power-Up NCS High before Reset NCS Low before Reset After Reset NCS Functional Hi Low MISO Undefined Undefined Functional Depends on NCS SCLK Ignored Ignored Functional Depends on NCS MOSI Ignored Ignored Functional Depends on NCS XY_LASER Undefined Undefined Undefined Functional MOTION Undefined Undefined Undefined Functional LASER_NEN Undefined Undefined Undefined Functional Functional Pin Status when Shutdown Mode NCS Functional*1 MISO Undefined*2 *1 NCS pin must be held to 1 (high) if SPI bus is shared with other devices. It is recommended to hold to 1 (high) during Power Down unless powering up the Sensor. It must be held to 0 (low) if the sensor is to be re-powered up from shutdown (writing 0x5a to register 0x3a). SCLK Ignore if NCS = 1*3 *2 Depend on last state. MOSI Ignore if NCS = 1*4 *3 SCLK is ignore if NCS is 1 (high). It is functional if NCS is 0 (low). XYLASER High(Off ) LASER_NEN High(Off ) MOTION Undefined *2 *4 MOSI is ignore if NCS is 1 (high). If NCS is 0 (low), any command present on the MOSI pin will be ignored except power-up command (writing 0x5a to register 0x3a). Note: There are long wakeup times from shutdown and forced Rest. These features should not be used for power management during normal mouse motion. 18 Registers The ADNS-7050 registers are accessible via the serial port. The registers are used to read motion data and status as well as to set the device configuration. Address Register Read/Write Default Value 0x00 Product_ID R 0x23 0x01 Revision_ID R 0x03 0x02 Motion R/W 0x00 0x03 Delta_X R 0x00 0x04 Delta_Y R 0x00 0x05 SQUAL R 0x00 0x06 Shutter_Upper R 0x00 0x07 Shutter_Lower R 0x64 0x08 Maximum_Pixel R 0xd0 0x09 Pixel_Sum R 0x80 0x0a Minimum_Pixel R 0x00 0x0b Pixel_Grab R/W 0x00 0x0c CRC0 R 0x00 0x0d CRC1 R 0x00 0x0e CRC2 R Undefined 0x0f CRC3 R Undefined 0x10 Self_Test W NA 0x11 Configuration_Bits R/W 0x03 0x12-0x19 Reserved 0x1a LASER_CTRL0 R/W 0x00 0x1b Reserved 0x1c LSRPWR_CFG0 R/W 0x00 0x1d LSRPWR_CFG1 R/W 0x00 0x1e Reserved 0x1f LASER_CTRL1 R/W 0x01 0x20-0x2d Reserved 0x2e Observation R/W Undefined 0x2f-0x39 Reserved 0x3a POWER_UP_RESET W NA 0x3b Shutdown W NA 0x3c-0x3d Reserved 0x3e Inverse_Revision_ID R 0xfc 0x3f Inverse_Product_ID R 0xdc 0x42 Motion_Burst R 0x00 19 Product_ID Address: 0x00 Access: Read Reset Value: 0x23 Bit Field 7 PID7 6 PID6 5 PID5 4 PID4 3 PID3 2 PID2 1 PID1 0 PID0 Data Type: 8-Bit unsigned integer USAGE: This register contains a unique identification assigned to the ADNS-7050. The value in this register does not change; it can be used to verify that the serial communications link is functional. Revision_ID Address: 0x01 Access: Read Reset Value: 0x03 Bit Field 7 RID7 6 RID6 5 RID5 4 RID4 3 RID3 2 RID2 1 RID1 Data Type: 8-Bit unsigned integer USAGE: This register contains the IC revision. It is subject to change when new IC versions are released. 20 0 RID0 Motion Address: 0x02 Access: Read/Write Bit Field served Reset Value: 0x00 7 MOT 6 PIXRDY 5 PIXFIRST 4 OVF 3 2 LP_VALID FAULT 1 0 Reserved Re- Data Type: Bit field USAGE: Register 0x02 allows the user to determine if motion has occurred since the last time it was read. If the MOT bit is set, then the user should read registers 0x03 and 0x04 to get the accumulated motion. Read this register before reading the Delta_X and Delta_Y registers. Writing anything to this register clears the MOT and OVF bits, Delta_X and Delta_Y registers. The written data byte is not saved. Internal buffers can accumulate more than eight bits of motion for X or Y. If either one of the internal buffers overflows, then absolute path data is lost and the OVF bit is set. To clear the overflow, write anything to this register. Check the OVR bit if more than 4” of motion is accumulated without reading it. If bit set, discard the motion as erroneous. Write anything to this register to clear the overflow condition. The PIXRDY bit will be set whenever a valid pixel data byte is available in the Pixel_Dump register. Check that this bit is set before reading from Pixel_Dump. To ensure that the Pixel_Grab pointer has been reset to pixel 0,0 on the initial write to Pixel_Grab, check to see if PIXFIRST is set to high. Field Name Description MOT Motion since last report 0 = No motion 1 = Motion occurred, data ready for reading in Delta_X and Delta_Y registers PIXRDY Pixel Dump data byte is available in Pixel_Dump register. 0 = Data not available 1 = Data available PIXFIRST This bit is set when the Pixel_Grab register is written to or when a complete pixel array has been read, initiating an increment to pixel 0,0. 0 = Pixel_Grab data not from pixel 0,0 1 = Pixel_Grab data is from pixel 0,0 OVF Motion overflow, ∆Y and/or ∆X buffer has overflowed since last report. 0 = No overflow 1 = Overflow has occurred LP_VALID Laser Power Settings 0 = Register 0x1a and register 0x1f or register 0x1c and register 0x1d do not have complementary values. 1 = Laser power is valid FAULT Indicates that XY_LASER is shorted to GND or VDD 0 = No fault detected 1 = Fault detected. NOTE: Avago Technologies recommends that registers 0x02, 0x03, and 0x04 be read sequentially. 21 Delta X Address: 0x03 Access: Read Reset Value: 0x00 Bit Field 7 X7 6 X6 5 X5 4 X4 3 X3 2 X2 1 X1 0 X0 Data Type: Eight bit 2’s complement number USAGE: X movement is counts since last report. Absolute value is determined by resolution. Reading clears the register. MOTION -128 -127 -2 -1 0 +1 +2 +126 +127 DELTA_X 80 81 FE FF 00 01 02 7E 7F NOTE: Avago Technologies recommends that registers 0x02, 0x03, and 0x04 be read sequentially. Delta Y Address: 0x04 Access: Read Reset Value: 0x00 Bit Field 7 Y7 6 Y6 5 Y5 4 Y4 3 Y3 2 Y2 1 Y1 0 Y0 Data Type: Eight bit 2’s complement number USAGE: Y movement is counts since last report. Absolute value is determined by resolution. Reading clears the register. MOTION -128 -127 -2 -1 0 +1 +2 +126 +127 DELTA_Y 80 81 FE FF 00 01 02 7E 7F NOTE: Avago Technologies recommends that registers 0x02, 0x03, and 0x04 be read sequentially. 22 Squal Address: 0x05 Access: Read Reset Value: 0x00 Bit Field 7 SQ7 6 SQ6 5 SQ5 4 SQ4 3 SQ3 2 SQ2 1 SQ1 0 SQ0 Data Type: Upper 8 bits of a 9-bit unsigned integer USAGE: SQUAL (Surface Quality) is a measure of the number of valid features visible by the sensor in the current frame. The maximum SQUAL register value is 162. Since small changes in the current frame can result in changes in SQUAL, variations in SQUAL when looking at a surface are expected. The graph below shows 250 sequentially acquired SQUAL values, while a sensor was moved slowly over white paper. SQUAL is nearly equal to zero, if there is no surface below the sensor. SQUAL is typically maximized when the navigation surface is at the optimum distance from the imaging lens (the nominal Z-height). SQUAL Value (White Paper) At Z = 0 mm, Circle@7.5" diameter, Speed-6ips Squal Value 160 140 120 100 1 45 89 133 177 221 265 309 353 397 441 485 529 573 617 661 705 749 793 837 881 Count Figure 22. SQUAL values at 800cpi (white paper). Mean SQUAL vs. Z (White Paper) 800dpi, Circle@7.5" diameter, Speed-6ips Squal count 160 140 Avg-3sigma Avg-3sigma Avg Avg Avg+3sigma Avg+3sigma 120 100 80 1.6 1.8 2 2.2 2.4 2.6 2.8 Distance of Lens Reference Plane to Surface, Z (mm) Figure 23. Mean SQUAL vs. Z (white paper). 23 3 3.2 Shutter_Upper Address: 0x06 Access: Read Reset Value: 0x00 Bit Field 7 S15 Shutter_Lower Address: 0x07 Access: Read Reset Value: 0x64 Bit Field 7 S7 6 S14 5 S13 4 S12 3 S11 2 S10 1 S9 0 S8 6 S6 5 S5 4 S4 3 S3 2 S2 1 S1 0 S0 Data Type: Sixteen bit unsigned integer USAGE: Units are clock cycles. Read Shutter_Upper first, then Shutter_Lower. They should be read consecutively. The shutter is adjusted to keep the average and maximum pixel values within normal operating ranges. The shutter value is automatically adjusted. Shutter Value (White Paper) At Z = 0 mm, Circle@7.5" diameter, Speed-6ips Shutter Value 160 140 120 100 1 42 83 124 165 206 247 288 329 370 411 452 493 534 575 616 657 698 739 780 821 862 Count Figure 24. Shutter values at 800cpi (white paper). Mean Shutter vs. Z (White paper) 800dpi, Circle@7.5" diameter, Speed-6ips Shutter value (Count) 160 150 140 Avg-3sigma 130 Avg 120 Avg+3sigma 110 100 1.6 1.8 2 2.2 2.4 2.6 2.8 3 Distance of Lens Reference Plane to Surface, Z (mm) Figure 25. Mean shutter vs. Z (white paper). 24 3.2 Maximum_Pixel Address: 0x08 Access: Read Reset Value: 0xd0 Bit Field 7 MP7 6 MP6 5 MP5 4 MP4 3 MP3 2 MP2 1 MP1 0 MP0 Data Type: Eight-bit number USAGE: Maximum Pixel value in current frame. Minimum value = 0, maximum value = 254. The maximum pixel value can vary with every frame. Pixel_Sum Address: 0x09 Access: Read Reset Value: 0x80 Bit Field 7 AP7 6 AP6 5 AP5 4 AP4 3 AP3 2 AP2 1 AP1 0 AP0 Data Type: High 8 bits of an unsigned 17-bit integer USAGE: This register is used to find the average pixel value. It reports the upper eight bits of a 17-bit counter, which sums all pixels in the current frame. It may be described as the full sum divided by 512. To find the average pixel value, use the following formula: Average Pixel = Register Value * 512/484 = Register Value * 1.058 The maximum register value is 241. The minimum is 0. The pixel sum value can change on every frame. 25 Minimum_Pixel Address: 0x0a Access: Read Reset Value: 0x00 Bit Field 7 MP7 6 MP6 5 MP5 4 MP4 3 MP3 2 MP2 1 MP1 0 MP0 Data Type:Eight-bit number USAGE: Minimum Pixel value in current frame. Minimum value = 0, maximum value = 254. The minimum pixel value can vary with every frame. Pixel_Grab Address: 0x0b Access: Read Reset Value: 0x00 Bit Field Data Type: 7 PD7 6 PD6 5 PD5 4 PD4 3 PD3 2 PD2 1 PD1 0 PD0 Eight-bit word USAGE: For test purposes, the sensor will read out the contents of the pixel array, one pixel per frame. To start a pixel grab, write anything to this register to reset the pointer to pixel 0,0. Then read the PIXRDY bit in the Motion register. When the PIXRDY bit is set, there is valid data in this register to read out. After the data in this register is read, the pointer will automatically increment to the next pixel. Reading may continue indefinitely; once a complete frame’s worth of pixels has been read, PIXFIRST will be set to high to indicate the start of the first pixel and the address pointer will start at the beginning location again. 26 0 22 44 66 1 23 45 67 89 111 133 155 177 199 221 243 265 287 309 331 353 375 397 419 441 463 2 24 46 68 90 112 134 156 178 200 222 244 266 288 310 332 354 376 398 420 442 464 3 25 47 69 91 113 135 157 179 201 223 245 267 289 311 333 355 377 399 421 443 465 4 26 48 70 92 114 136 158 180 202 224 246 268 290 312 334 356 378 400 422 444 466 5 27 49 71 93 115 137 159 181 203 225 247 269 291 313 335 357 379 401 423 445 467 6 28 50 72 94 116 138 160 182 204 226 248 270 292 314 336 358 380 402 424 446 468 7 29 51 73 95 117 139 161 183 205 227 249 271 293 315 337 359 381 403 425 447 469 8 30 52 74 96 118 140 162 184 206 228 250 272 294 316 338 360 382 404 426 448 470 9 31 53 75 97 119 141 163 185 207 229 251 273 295 317 339 361 383 405 427 449 471 98 120 142 164 186 208 230 252 274 296 318 340 362 384 406 428 450 472 10 32 54 76 11 33 55 77 99 121 143 165 187 209 231 253 275 297 319 341 363 385 407 429 451 473 12 34 56 78 100 122 144 166 188 210 232 254 276 298 320 342 364 386 408 430 452 474 13 35 57 79 101 123 145 167 189 211 233 255 277 299 321 343 365 387 409 431 453 475 14 36 58 80 102 124 146 168 190 212 234 256 278 300 322 344 366 388 410 432 454 476 15 37 59 81 103 125 147 169 191 213 235 257 279 301 323 345 367 389 411 433 455 477 16 38 60 82 104 126 148 170 192 214 236 258 280 302 324 346 368 390 412 434 456 478 17 39 61 83 105 127 149 171 193 215 237 259 281 303 325 347 369 391 413 435 457 479 18 40 62 84 106 128 150 172 194 216 238 260 282 304 326 348 370 392 414 436 458 480 19 41 63 85 107 129 151 173 195 217 239 261 283 305 327 349 371 393 415 437 459 481 20 42 64 86 108 130 152 174 196 218 240 262 284 306 328 350 372 394 416 438 460 482 21 43 65 87 109 131 153 175 197 219 241 263 285 307 329 351 373 395 417 439 461 483 LAST PIXEL Figure 26. Pixel address map (looking through the ADNS-6130-001 or ADNS-6120 lens). 27 TOP X-RAY VIEW OF MOUSE 88 110 132 154 176 198 220 242 264 286 308 330 352 374 396 418 440 462 LB POSITIVE Y FIRST PIXEL RB A7050 XYYWWZ POSITIVE X CRC0 Address: 0x0c Access: Read Reset Value: 0x00 Bit Field 7 CRC07 6 CRC06 5 CRC05 4 CRC04 3 CRC03 2 CRC02 1 CRC01 0 CRC00 Data Type: Eight-bit number USAGE: Register 0x0c reports the first byte of the system self test results. Value = 05. See Self Test register 0x10. CRC1 Address: 0x0d Access: Read Reset Value: 0x00 Bit Field 7 CRC17 6 CRC16 5 CRC15 4 CRC14 3 CRC13 2 CRC12 1 CRC11 0 CRC10 Data Type: Eight-bit number USAGE: Register 0x0c reports the second byte of the system self test results. Value = 9A. See Self Test register 0x10. CRC2 Address: 0x0e Access: Read Reset Value: 0x00 Bit Field 7 CRC27 6 CRC26 5 CRC25 4 CRC24 3 CRC23 2 CRC22 1 CRC21 0 CRC20 Data Type: Eight-bit number USAGE: Register 0x0e reports the third byte of the system self test results. Value = CA. See Self Test register 0x10. CRC3 Address: 0x0f Access: Read Reset Value: 0x00 Bit Field 7 CRC37 6 CRC36 5 CRC35 4 CRC34 3 CRC33 2 CRC32 1 CRC31 0 CRC30 Data Type: Eight-bit number USAGE: Register 0x0f reports the fourth byte of the system self test results. Value = 0B. See Self Test register 0x10. 28 Self_Test Address: 0x10 Access: Write Reset Value: NA Bit Field 7 6 5 4 3 2 1 0 Reserved Reserved Reserved Reserved Reserved Reserved Reserved TESTEN Data Type: Bit field USAGE: Set the TESTEN bit in register 0x10 to start the system self-test. The test takes 250ms. During this time, do not write or read through the SPI port. Results are available in the CRC0-3 registers. After self-test, reset the chip to start normal operation. Field Name Description TESTEN Enable System Self Test 0 = Disabled 1 = Enable Configuration_bits Address: 0x11 Access: Read/Write Reset Value: 0x03 Bit Field 7 RES 6 Reserved 5 RESTEN1 4 RESTEN0 3 2 Reserved Reserved 1 Reserved 0 Reserved Data Type: Bit field USAGE: Register 0x11 allows the user to change the configuration of the sensor. Setting the RESTEN1-0 bits forces the sensor into Rest mode, as described in the power modes section above. The RES bit allows selection between 400 and 800 cpi resolution. Note: Forced Rest has a long wakeup time and should not be used for power management during normal mouse motion. 29 Field Name Description RESTEN1-0 Puts chip into Rest mode 00 = normal operation 01 = force Rest1 11 = force Rest3 RES Sets resolution 0 = 400 1 = 800 Reserved Address: 0x12-0x19 LASER_CTRL0 Address: 0x1a Access: Read/Write Reset Value: 0x00 Bit Field 7 Range 6 Reserved 5 Match_bit 4 Reserved 3 CAL2 2 CAL1 1 CAL0 0 Force_Disable Data Type: Bit field USAGE: This register is used to control the laser drive. Bits 5 and 7 require complement values in register 0x1F. If the registers do not contain complementary values for these bits, the laser is turned off and the LP_VALID bit in the MOTION register is set to 0. The registers may be written in any order after the power ON reset. Field Name Description Range Rbin Settings 0 = Laser current range from approximately 2 mA to 7 mA 1 = Laser current range from approximately 5 mA to 13 mA Match_bit Match the sensor to the laser characteristics. Set per the bin table specification for the laser in use based on the bin letter. CAL2-0 VCSEL Bin Number Match_bit 2A 0 3A 0 Laser calibration mode - Write 101b to bits [3,2,1] to set the laser to continuous ON (CW) mode. - Write 000b to exit laser calibration mode, all other values are not recommended. Reading the Motion register (0x03 or 0x42) will reset the value to 000b and exit calibration mode. Force_Disable LASER force disabled 0 = LASER_NEN functions as normal 1 = LASER_NEN output is high. Reserved 30 Address: 0x1b LSRPWR_CFG0 Access: Read and Write Bit Field Data Type: Address: 0x1c Reset Value: 0x00 7 LP7 6 LP6 5 LP5 4 LP4 3 LP3 2 LP2 1 LP1 0 LP0 8 Bit unsigned USAGE: This register is used to set the laser current. It is to be used together with register 0x1D, where register 0x1D contains the complement of register 0x1C. If the registers do not contain complementary values, the laser is turned off and the LP_VALID bit in the MOTION register is set to 0. The registers may be written in any order after the power ON reset. Field Name Description LP7 – LP0 Controls the 8-bit DAC for adjusting laser current. One step is equivalent to (1/384)*100% = 0.26% drop of relative laser current. Refer to the table below for examples of relative laser current settings. LP7 - LP3 LP 2 LP 1 LP 0 Relative Laser Current 00000 0 0 0 33.59% 00000 0 0 1 33.85% 00000 0 1 0 34.11% : : : : : : : 11111 1 0 1 99.48% 11111 1 1 0 99.74% 11111 1 1 1 100% LSRPWR_CFG1 Access: Read and Write Bit Field Data Type: Address: 0x1d Reset Value: 0x00 7 LPC7 6 LPC6 5 LPC5 4 LPC4 3 LPC3 2 LPC2 1 LPC1 0 LPC0 8 Bit unsigned USAGE: The value in this register must be a complement of register 0x1C for laser current to be as programmed, otherwise the laser is turned off and the LP_VALID bit in the MOTION register is set to 0. Registers 0x1C and 0x1D may be written in any order after power ON reset. Reserved 31 Address: 0x1e LASER_CTRL1 Access: Read and Write Bit Field Data Type: Address: 0x1f Reset Value: 0x01 7 Range_C 6 Reserved 5 4 3 Match_bit_C Reserved Reserved 2 Reserved 1 Reserved 0 Reserved 8 Bit unsigned USAGE: Bits 5 and 7 of this register must be the complement of the corresponding bits in register 0x1A for the VCSEL control to be as progrmmed, otherwise the laser turned is off and the LP_VALID bit in the MOTION register is set to 0. Registers 0x1A and 0x1F may be written in any order after power ON reset. Reserved Address: 0x20-0x2d Observation Access: Read/Write Address: 0x2e Reset Value: 0x00 Bit Field Data Type: 7 MODE1 6 MODE0 5 4 Reserved OBS4 3 OBS3 2 OBS2 1 OBS1 0 OBS0 Bit field USAGE: Register 0x2e provides bits that are set every frame. It can be used during EFT/B testing to check that the chip is running correctly. Writing anything to this register will clear the bits. Field Name Description MODE1-0 Mode Status: Reports which mode the sensor is in. 00 = Run 01 = Rest 1 10 = Rest 2 11 = Rest 3 OBS4-0 Updated on every frame Reserved 32 Address: 0x2f-0x39 POWER_UP_RESET Access: Write Address: 0x3a Reset Value: NA Bit Field Data Type: 7 RST7 6 RST6 5 RST5 4 RST4 3 RST3 2 RST2 1 RST1 0 RST0 8-bit integer USAGE: Write 0x5a to this register to reset the chip. All settings will revert to default values. Reset is required after recovering from shutdown mode. SHUTDOWN Access: Write Only Bit Field Data Type: Address: 0x3b Reset Value: NA 7 SD7 6 SD 6 5 SD 5 4 SD 4 3 SD 3 2 SD 2 1 SD 1 0 SD 0 8-bit integer USAGE: Write 0xe7 to set the chip to shutdown mode, use POWER_UP_RESET register (address 0x3b) to power up the chip. Reserved Address: 0x3c-0x3d Inverse_Revision_ID Access: Read Address: 0x3e Reset Value: 0xfc Bit Field 7 NRID7 6 NRID6 5 NRID5 4 NRID4 3 NRID3 2 NRID2 1 NRID1 Data Type: Inverse 8-Bit unsigned integer USAGE: 33 This value is the inverse of the Revision_ID. It can be used to test the SPI port. 0 NRID0 Inverse_Product_ID Access: Read Bit Field Address: 0x3f Reset Value: 0xdc 7 NPID7 6 NPID6 5 NPID5 4 NPID4 3 NPID3 2 NPID2 1 NPID1 0 NPID0 1 MB1 0 MB0 Data Type: Inverse 8-Bit unsigned integer USAGE: This value is the inverse of the Product_ID. It can be used to test the SPI port. Motion_Burst Access: Read Address: 0x42 Reset Value: 0x00 Bit Field 7 MB7 6 MB6 5 MB5 4 MB4 3 MB3 2 MB2 Data Type: Various USAGE: Read from this register to activate burst mode. The sensor will return the data in the Motion register, Delta_X, Delta_Y, Squal, Shutter_Upper, Shutter_Lower, and Maximum_Pixel. Reading the first 3 bytes clears the motion data. The read may be terminated anytime after Delta_X is read. For product information and a complete list of distributors, please go to our web site: www.avagotech.com Avago, Avago Technologies, and the A logo are trademarks of Avago Technologies in the United States and other countries. Data subject to change. Copyright © 2005-2009 Avago Technologies. All rights reserved. AV02-1411EN - December 4, 2009