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GS2970A Datasheet(PDF) 12 Page - Semtech Corporation |
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GS2970A Datasheet(HTML) 12 Page - Semtech Corporation |
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12 / 150 page  GS2970A 3Gb/s, HD, SD SDI Receiver Data Sheet 54244 - 2 September 2012 12 of 150 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, G5 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 4.10.1. 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 SDI_VDD Input Power POWER pin for SDI buffer. Connect to 3.3V DC analog. E2 SDI_GND Input Power GND pin for SDI buffer. Connect to analog GND. E7 SDOUT_TDO Output COMMUNICATION SIGNAL OUTPUT Please refer to the Output Logic parameters in the DC Electrical Characteristics table for logic level threshold and compatibility. GSPI serial data output/test data out. In JTAG mode (JTAG/HOST = HIGH), this pin is used to shift test results from the device. In host interface mode, this pin is used to read status and configuration data from the device. Table 1-1:Pin Descriptions (Continued) Pin Number Name Timing Type Description |
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