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GS1661 Datasheet(PDF) 9 Page - Semtech Corporation |
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GS1661 Datasheet(HTML) 9 Page - Semtech Corporation |
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9 / 84 page  GS1661 HD/SD SDI Receiver Data Sheet 53751 - 3 September 2012 9 of 84 B1 A_VDD Input Power POWER pin for analog circuitry. Connect to 3.3V DC analog. B2, C3, C4 PLL_VDD Input Power POWER pins for the Reclocker PLL. Connect to 1.2V DC analog. B3, F2, H4, J3, J4, J5, K3, K4, K5 RSV These pins must be left unconnected. B4 VCO_GND Input Power GND pin for the VCO. Connect to analog GND. B7, D9, G9, J7 IO_GND Input Power GND connection for digital I/O. Connect to digital GND. C1, D1 SDI, SDI Analog Input Serial Digital Differential Input. C2, D2, D3, E3, F3, G2 A_GND Input Power GND pins for sensitive analog circuitry. Connect to analog GND. C7RESET_TRST Input CONTROL SIGNAL INPUT Please refer to the Input Logic parameters in the DC Electrical Characteristics table for logic level threshold and compatibility. Used to reset the internal operating conditions to default settings and to reset the JTAG sequence. Normal mode (JTAG/HOST = LOW): When LOW, all functional blocks are set to default conditions and all digital output signals become high impedance. When HIGH, normal operation of the device resumes. JTAG test mode (JTAG/HOST = HIGH): When LOW, all functional blocks are set to default and the JTAG test sequence is reset. When HIGH, normal operation of the JTAG test sequence resumes after RESET_TRST is de-asserted. D4, E4, F4 PLL_GND Input Power GND pins for the Reclocker PLL. Connect to analog GND. D5, E5, F5, G4, G5, H3 CORE_GND Input Power GND connection for device core. Connect to digital GND. D6, E6, F6, G6 CORE_VDD Input Power POWER connection for device core. Connect to 1.2V DC digital. D7 SW_EN Input CONTROL SIGNAL INPUT Please refer to the Input Logic parameters in the DC Electrical Characteristics table for logic level threshold and compatibility. Used to enable switch-line locking, as described in Section 4.9.1. D8 JTAG/HOST Input CONTROL SIGNAL INPUT Please refer to the Input Logic parameters in the DC Electrical Characteristics table for logic level threshold and compatibility. Used to select JTAG test mode or host interface mode. When JTAG/HOST is HIGH, the host interface port is configured for JTAG test. When JTAG/HOST is LOW, normal operation of the host interface port resumes. E1 EQ_VDD Input Power POWER pin for SDI buffer. Connect to 3.3V DC analog. E2 EQ_GND Input Power GND pin for SDI buffer. Connect to analog GND. Table 1-1: Pin Descriptions (Continued) Pin Number Name Timing Type Description |
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