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GS2986 Datasheet(PDF) 6 Page - Semtech Corporation |
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GS2986 Datasheet(HTML) 6 Page - Semtech Corporation |
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6 / 41 page  GS2986 Multi-Rate SDI Reclocker with Equalization & De-emphasis Data Sheet 52134 - 3 July 2012 6 of 41 1.2 Pin Descriptions Table 1-1: GS2986 Pin Descriptions Pin Number Name Type Description 1 CP_CAP Power External capacitor for internal LDO regulator supplying the charge pump circuit. 2, 4 DDI0, DDI0 Input Serial Digital Differential Input 0. 3HIF Logic Input Host interface selection pin. Active-low input. See Section 4.15.1. 5, 6 DDI1, DDI1 Input Serial Digital Differential Input 1. 7, 8 DDI2, DDI2 Input Serial Digital Differential Input 2. 9, 10 DDI3, DDI3 Input Serial Digital Differential Input 3. 11 RSVD Reserved Reserved pin. Do not connect to this pin. 12, 13 DDI_SEL[0:1] Logic Input Selects one of four serial digital input signals for processing. See Section 4.4. 14 VCC_VCOPower Most positive power supply connection for the internal VCO section. Connect to a 3.3V supply with a 422 Ω resistor, or to a 2.5V supply with a 267 Ω resistor. 15 VEE_VCOPower Most negative power supply connection for the internal VCO section. Connect to GND. 16 VDD_1P8 Power External capacitor for internal 1.8V digital supply. 17 LOCKED Output Lock Detect status signal. HIGH when the PLL is locked. 18 LOS Output Loss Of Signal status. HIGH when the input signal is invalid. 19 VDD_DIG Power Most positive power supply connection for the digital core. Connect to 3.3V or 2.5V. 20 VSS_DIG Power Most negative power supply for the digital core. Connect to GND. 21 SD/HD Output This signal will be LOW for all rates other than 270Mb/s. This signal is HIGH for 270Mb/s. 22 DDO1_DISABLE Logic Input Disables the DDO1/RCO and DDO1/RCO outputs when LOW. See Section 4.14. 23, 24 DDO1/RCO, DDO1/RCO Output Differential serial clock or data outputs. 25 VCC_DDO1 Power Most positive power supply connection for the DDO1/DDO1 output driver. Connect to 3.3V or 2.5V. 26 VEE_DDO1 Power Most negative power supply connection for the DDO1/DDO1 output driver. Connect to GND. 27, 28 DDO0, DDO0 Output Differential Serial Digital Outputs. |
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Descripción similar - GS2986 |
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