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GS9076 Datasheet(PDF) 5 Page - Semtech Corporation |
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GS9076 Datasheet(HTML) 5 Page - Semtech Corporation |
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5 / 25 page  GS9076 Data Sheet 44617 - 1 January 2008 5 of 25 1.2 GS9076 Pin Descriptions Table 1-1: Pin Descriptions Pin Number Name Type Description 1, 3 DDI0, DDI0 Input Serial digital differential input 0. 2 DDI0_VTT Passive Center tap of two 50 Ω on-chip termination resistors between DDI0 and DDI0. 4, 8, 12,16, 32, 43, 49 GND Passive Recommended connect to GND. 5, 7 DDI1,DDI1 Input Serial digital differential input 1. 6 DDI1_VTT Passive Center tap of two 50 Ω on-chip termination resistors between DDI1 and DDI1. 9, 11 DDI2, DDI2 Input Serial digital differential input 2. 10 DDI2_VTT Passive Center tap of two 50 Ω on-chip termination resistors between DDI2 and DDI2. 13, 15 DDI3, DDI3 Input Serial digital differential input 3. 14 DDI3_VTT Passive Center tap of two 50 Ω on-chip termination resistors between DDI3 and DDI3. 17, 18 DDI_SEL[1:0] Logic Input Serial digital input select. 19 BYPASS Logic Input Bypass the reclocker stage. When BYPASS is HIGH, it overwrites the AUTOBYPASS setting. 20 AUTOBYPASS Logic Input Automatically bypasses the reclocker stage when the PLL is not locked This pin is ignored when BYPASS is HIGH. 21 AUTO Logic Input Auto select. This pin should be set HIGH for automatic SD-SDI and DVB-ASI standard detection. 22 VCC_VCO Power Most positive power supply connection for the internal VCO section. Connect to 3.3V. 23 VEE_VCO Power Most negative power supply connection for the internal VCO section. Connect to GND. 24, 25, 26 SS[2:0] Bi-directional The SS[2:0] pins will display 010 when the internal PLL has locked to a 270Mb/s input data rate. 27 NC No Connect Not connected internally. 28 LOCKED Output Lock Detect. This pin is set HIGH by the device when the PLL is locked. DDI_SEL1 DDI_SEL0 INPUT SELECTED 0 0 DDI0 0 1 DDI1 1 0 DDI2 1 1 DDI3 |
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