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GS12081 Datasheet(PDF) 7 Page - Semtech Corporation |
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GS12081 Datasheet(HTML) 7 Page - Semtech Corporation |
7 / 64 page GS12081 Final Data Sheet Rev.6 PDS-061305 January 2019 7 of 64 Semtech Proprietary & Confidential www.semtech.com 17 GPIO0 Digital Input/Output Multi-function Control/Status Input/Output 0. Default function: Direction = Output Signal = High indicates LOS (Loss of Signal, inverse of Carrier Detect) Pin is 1.8V CMOS I/O, please refer to GPIO0_CFG for more information on how to configure GPIO0. 18 GPIO1 Digital Input/Output Multi-function Control/Status Input/Output 1. Default function: Direction = Output Signal = Unassigned. Configure to the most appropriate GPIO function for the intended application. Pin is 1.8V CMOS I/O, please refer to GPIO1_CFG for more information on how to configure GPIO1. 19, 31, 37, 38 VEE_CORE Power Most negative power supply connection for the analog core. Connect to ground. 20 VCCO1P8_1 Power Most positive power supply connection for cable driver pre driver. Connect to 1.8V and decouple to ground. See Section 6.1 Typical Application Circuit for values. 21, 28 VEEO Power Most negative power supply connection for the output drivers. Connect to ground. 22, 23 SDO1,SDO1 Output Differential CML output with two internal 75Ω pull-ups. Note: If one of the two outputs is not used by the application, ensure that it is connected to ground through a capacitor and resistor. See Section 6.1 Typical Application Circuit for values. 24 VCCO_1 Power Most positive power supply connection for the SDO1/ SDO1 output driver. Connect to 2.5V or 3.3V and decouple to ground. See Section 6.1 Typical Application Circuit for values. 25 VCCO_0 Power Most positive power supply connection for the SDO/SDO0 output driver. Connect to 2.5V or 3.3V and decouple to ground. See Section 6.1 Typical Application Circuit for values. 26, 27 SDO0, SDO0 Output Differential CML output with two internal 75Ω pull-ups. Note: If one of the two outputs is not used by the application, ensure that it is connected to ground through a capacitor and resistor. See Section 6.1 Typical Application Circuit for values. 29 VCCO1P8_0 Power Most positive power supply connection for cable driver pre driver. Connect to 1.8V and decouple to ground. See Section 6.1 Typical Application Circuit for values. Table 1-1: GS12081 Pin Descriptions (Continued) Pin Number Name Type Description |
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