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GS1662 Folha de dados(PDF) 11 Page - Semtech Corporation |
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GS1662 Folha de dados(HTML) 11 Page - Semtech Corporation |
11 / 73 page GS1662 HD/SD-SDI Serializer with Complete SMPTE Video Support Data Sheet 53628 - 3 October 2010 11 of 73 B7 VCO_VDD Input Power Power pin for VCO. Connect to 1.2V DC analog followed by an RC filter (see Typical Application Circuit on page 68). VCO_VDD is nominally 0.7V. B8 VCO_GND Input Power Ground connection for VCO. Connect to analog GND. B9, B10 A_GND Input Power GND pins for sensitive analog circuitry. Connect to analog GND. C4V/VSYNCSynch- ronous with PCLK Input PARALLEL DATA TIMING. Signal levels are LVCMOS / LVTTL compatible. TIM_861 = LOW: The V signal is used to indicate the portion of the video field/frame that is used for vertical blanking, when DETECT_TRS is set LOW. The V signal should be set HIGH for the entire vertical blanking period and should be set LOW for all lines outside of the vertical blanking interval. The V signal is ignored when DETECT_TRS = HIGH. TIM_861 = HIGH: The VSYNC signal indicates vertical timing. See Section 4.3 for timing details. The VSYNC signal is ignored when DETECT_TRS = HIGH. C6, C7, C8PLL_GND Input Power Ground connection for PLL. Connect to analog GND. C9, D9, E9, F9 CD_GND Input Power Ground connection for the serial digital cable driver. Connect to analog GND. C10, D10 SDO, SDO Output Serial Data Output Signal. Serial digital output signal operating at 1.485Gb/s, 1.485 /1.001Gb/s or 270Mb/s. The slew rate of the output is automatically controlled to meet SMPTE 292 and 259M specifications according to the setting of the RATE_SEL pin. D3 STANDBY Input Standby input. HIGH to place the device in Standby mode. D4 SDO_EN/DIS Input CONTROL SIGNAL INPUT. Signal levels are LVCMOS / LVTTL compatible. Used to enable or disable the serial digital output stage. When SDO_EN/DIS is LOW, the serial digital output signals SDO and SDO are disabled and become high impedance. When SDO_EN/DIS is HIGH, the serial digital output signals SDO and SDO are enabled. Table 1-1: Pin Descriptions (Continued) Pin Number Name Timing Type Description |
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