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Manuale per l’uso Analog Devices AD9883A

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  • Analog Devices AD9883A - page 1

    REV. 0 Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Analog ...

  • Analog Devices AD9883A - page 2

    REV. 0 –2– AD9883A–SPECIFICA TIONS Test AD9883AKST-110 AD9883AKST-140 Parameter Temp Level Min Typ Max Min Typ Max Unit RESOLUTION 8 8 Bits DC ACCURACY Differential Nonlinearity 25 ° CI ± 0.5 +1.25/–1.0 ± 0.5 +1.35/–1.0 LSB Full VI +1.35/–1.0 +1.45/–1.0 LSB Integral Nonlinearity 25 ° CI ± 0.5 ± 1.85 ± 0.5 ± 2.0 LSB Full VI ± ...

  • Analog Devices AD9883A - page 3

    REV. 0 –3– AD9883A Test AD9883AKST-110 AD9883AKST-140 Parameter Temp Level Min Typ Max Min Typ Max Unit DIGITAL OUTPUTS Output Voltage, High (V OH ) Full VI V D – 0.1 V D – 0.1 V Output Voltage, Low (V OL ) Full VI 0.1 0.1 V Duty Cycle DATACK Full IV 45 50 55 45 50 55 % Output Coding Binary Binary POWER SUPPLY V D Supply Voltage Full IV 3.0 ...

  • Analog Devices AD9883A - page 4

    REV. 0 AD9883A –4– CAUTION ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily accumulate on the human body and test equipment and can discharge without detection. Although the AD9883A features proprietary ESD protection circuitry, permanent damage may occur on devices subjected to high-energy electro ...

  • Analog Devices AD9883A - page 5

    REV. 0 –5– AD9883A PIN CONFIGURATION GND GREEN <7> GREEN <6> GREEN <5> GREEN <4> GREEN <3> GREEN <2> GREEN <1> GREEN <0> GND V DD BLUE <7> BLUE <6> BLUE <5> BLUE <4> BLUE <3> BLUE <2> BLUE <1> BLUE <0> GND GND GND GND GND GND GND V D V D V D V D V D ...

  • Analog Devices AD9883A - page 6

    REV. 0 AD9883A –6– PIN FUNCTION DESCRIPTIONS Pin Name Function OUTPUTS HSOUT Horizontal Sync Output A reconstructed and phase-aligned version of the Hsync input. Both the polarity and duration of this output can be programmed via serial bus registers. By maintaining alignment with DATACK, and Data, data timing with respect to horizontal sync ca ...

  • Analog Devices AD9883A - page 7

    REV. 0 AD9883A –7– PIN FUNCTION DESCRIPTIONS (continued) Pin Name Function CLAMP External Clamp Input This logic input may be used to define the time during which the input signal is clamped to ground. It should be exercised when the reference dc level is known to be present on the analog input channels, typically during the back porch of the g ...

  • Analog Devices AD9883A - page 8

    REV. 0 AD9883A –8– At that point the signal should be resistively terminated (75 Ω to the signal ground return) and capacitively coupled to the AD9883A inputs through 47 nF capacitors. These capacitors form part of the dc restoration circuit. In an ideal world of perfectly matched impedances, the best perfor- mance can be obtained with the wi ...

  • Analog Devices AD9883A - page 9

    REV. 0 AD9883A –9– GAIN 1.0 0.0 00h FFh INPUT RANGE – Volts 0.5 OFFSET = 00h OFFSET = 3Fh OFFSET = 7Fh OFFSET = 00h OFFSET = 7Fh OFFSET = 3Fh Figure 2. Gain and Offset Control Gain and Offset Control The AD9883A can accommodate input signals with inputs ranging from 0.5 V to 1.0 V full scale. The full-scale range is set in three 8-bit registe ...

  • Analog Devices AD9883A - page 10

    REV. 0 AD9883A –10– The PLL characteristics are determined by the loop filter design, by the PLL Ch arge Pump Current and by the VCO range setting. The loop filter design is illustrated in Figure 6. Recommended settings of VCO range and charge pump current for VESA standard display modes are listed in Table V. C P 0.0039 ␮ F 0.039 ␮ F C Z 3 ...

  • Analog Devices AD9883A - page 11

    REV. 0 AD9883A –11– Table V. Recommended VCO Range and Charge Pump Current Settings for Standard Display Formats Refresh Horizontal Standard Resolution Rate Frequency Pixel Rate VCORNGE Current VGA 640 × 480 60 Hz 31.5 kHz 25.175 MHz 00 101 72 Hz 37.7 kHz 31.500 MHz 00 110 75 Hz 37.5 kHz 31.500 MHz 00 110 85 Hz 43.3 kHz 36.000 MHz 00 110 SVGA ...

  • Analog Devices AD9883A - page 12

    REV. 0 AD9883A –12– P0 P1 P2 P3 P4 P5 P6 P7 5-PIPE DELA Y D0 D1 D2 D3 D4 D5 D6 D7 RGB IN HSYNC PxCK HS ADCCK DA T AC K D OUT A HSOUT V ARIABLE DURA TION Figure 8. 4:4:4 Mode (For RGB and YUV) P0 P1 P2 P3 P4 P5 P6 P7 5-PIPE DELA Y Y0 Y1 Y2 Y3 Y4 Y5 Y6 Y7 RGB IN HSYNC PxCK HS ADCCK DA T AC K G OUT A HSOUT U0 V1 U2 V3 U4 V5 U6 V7 R OUT A Figure 9. ...

  • Analog Devices AD9883A - page 13

    REV. 0 AD9883A –13– 2-Wire Serial Register Map The AD9883A is initialized and controlled by a set of registers, which determine the operating modes. An external controller is employed to write and read the Control Registers through the 2-line serial interface port. Table VI. Control Register Map Write and Hex Read or Default Register Address Re ...

  • Analog Devices AD9883A - page 14

    REV. 0 AD9883A –14– Table VI. Control Register Map (continued) Write and Hex Read or Default Register Address Read Only Bits Value Name Function 0FH R/ W 7:1 0 ******* Bit 7 – Clamp Function. Chooses between HSYNC for Clamp signal or another external signal to be used for clamping. (Logic 0 = HSYNC, Logic 1 = Clamp.) * 1 ****** Bit 6 – Clam ...

  • Analog Devices AD9883A - page 15

    REV. 0 AD9883A –15– Table VI. Control Register Map (continued) Write and Hex Read or Default Register Address Read Only Bits Value Name Function 15H R/ W 7:0 Test Register Bits [7:2] Reserved for future use. Bit 1 – 4:2:2 Output Formatting Mode. Bit 0 – Must be set to 0 for proper operation. 16H R/ W 7:0 Test Register Reserved for future us ...

  • Analog Devices AD9883A - page 16

    REV. 0 AD9883A –16– 04 7–3 Clock Phase Adjust A 5-bit value that adjusts the sampling phase in 32 steps across one pixel time. Each step represents an 11.25 ° shift in sampling phase. The power-up default value is 16. CLAMP TIMING 05 7–0 Clamp Placement An 8-bit register that sets the position of the internally generated clamp. When Clamp ...

  • Analog Devices AD9883A - page 17

    REV. 0 AD9883A –17– 0E 5 Hsync Output Polarity One bit that determines the polarity of the Hsync output and the SOG output. Table XI shows the effect of this option. SYNC indicates the logic state of the sync pulse. Table XI. Hsync Output Polarity Settings Setting SYNC 0 Logic 1 (Positive Polarity) 1 Logic 0 (Negative Polarity) The default sett ...

  • Analog Devices AD9883A - page 18

    REV. 0 AD9883A –18– 0F 4 Coast Input Polarity Override This register is used to override the internal circuitry that determines the polarity of the coast signal going into the PLL. Table XX. Coast Input Polarity Override Settings Override Bit Result 0 Coast Polarity Determined by Chip 1 Coast Polarity Determined by User The default for coast po ...

  • Analog Devices AD9883A - page 19

    REV. 0 AD9883A –19– 13 7-0 Post-Coast This register allows the coast signal to be applied follow- ing to the Vsync signal. This is necessary in cases where post-equalization pulses are present. The step size for this control is one Hsync period. The default is 0. 14 7 Hsync Detect This bit is used to indicate when activity is detected on the Hs ...

  • Analog Devices AD9883A - page 20

    REV. 0 AD9883A –20– Table XXXIV. Detected Coast Input Polarity Status Hsync Polarity Status Result 0 Coast Polarity Negative 1 Coast Polarity Positive 15 7 4:2:2 Output Mode Select A bit that configures the output data in 4:2:2 mode. This mode can be used to reduce the number of data lines used from 24 down to 16 for applications using YUV, VCb ...

  • Analog Devices AD9883A - page 21

    REV. 0 AD9883A –21– Data is read from the control registers of the AD9883A in a simi la r manner. Reading requires two data transfer operations: The base address must be written with the R/ W bit of the slave address byte LOW to set up a sequential read operation. Reading (the R/ W bit of the slave address byte high) begins at the previously es ...

  • Analog Devices AD9883A - page 22

    REV. 0 AD9883A –22– Table XXXVIII. Control of the Sync Block Muxes via the Serial Register Control Mux Serial Bus Bit Nos. Control Bit State Result 1 and 2 0EH: Bit 3 0 Pass Hsync 1 Pass Sync-on-Green 3 0FH: Bit 5 0 Pass Coast 1 Pass Vsync 4 0EH: Bit 0 0 Pass Vsync 1 Pass Sync Separator Signal Sync Slicer The purpose of the sync slicer is to ex ...

  • Analog Devices AD9883A - page 23

    REV. 0 AD9883A –23– It is also recommended to use a single ground plane for the entire board. Experience has repeatedly shown that the noise perfor- mance is the same or better with a single ground plane. Using multiple ground planes can be detrimental because each sepa rate ground plane is smaller, and long ground loops can result. In some cas ...

  • Analog Devices AD9883A - page 24

    REV. 0 –24– C02561–1–10/01(0) PRINTED IN U.S.A. AD9883A OUTLINE DIMENSIONS Dimensions shown in inches and (mm). 80-Lead LQFP (ST-80) 61 60 1 80 20 41 21 40 TOP VIEW (PINS DOWN) PIN 1 0.630 (16.00) BSC SQ 0.551 (14.00) BSC SQ SEATING PLANE 0.063 (1.60) MAX 0.004 (0.10) MAX COPLANARITY 0.006 (0.15) 0.002 (0.05) 0.030 (0.75) 0.024 (0.60) 0.018 ...

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