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GS1560ACFE3 bảng dữ liệu(PDF) 11 Page - Gennum Corporation |
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GS1560ACFE3 bảng dữ liệu(HTML) 11 Page - Gennum Corporation |
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11 / 80 page  GS1560A/GS1561 Data Sheet 27360 - 10 January 2007 11 of 80 22 CD_GND – Power GS1560A Ground connection for the serial digital cable driver. Connect to analog GND. NC – – GS1561 No Connect. 23, 24 SDO, SDO Analog Output GS1560A Serial digital loop-through output signal operating at 1.485Gb/s, 1.485/1.001Gb/s, or 270Mb/s. The slew rate of these outputs is automatically controlled to meet SMPTE 292M and 259M specifications according to the setting of the SD/HD pin. NC – – GS1561 No Connect. 25 RESET_TRST Non Synchronous Input CONTROL SIGNAL INPUT Signal levels are LVCMOS/LVTTL compatible. Used to reset the internal operating conditions to default settings and to reset the JTAG test sequence. Host Mode (JTAG/HOST = LOW) When asserted LOW, all functional blocks will be set to default conditions and all input and output signals become high impedance, including the serial digital outputs SDO and SDO. Must be set HIGH for normal device operation. NOTE: When in slave mode, reset the device after the SD/HD input has been initially configured, and after each subsequent SD/HD data rate change. JTAG Test Mode (JTAG/HOST = HIGH) When asserted LOW, all functional blocks will be set to default and the JTAG test sequence will be held in reset. When set HIGH, normal operation of the JTAG test sequence resumes. 26 JTAG/HOST Non Synchronous Input CONTROL SIGNAL INPUT Signal levels are LVCMOS/LVTTL compatible. Used to select JTAG Test Mode or Host Interface Mode. When set HIGH, CS_TMS, SDOUT_TDO, SDI_TDI and SCLK_TCK are configured for JTAG boundary scan testing. When set LOW, CS_TMS, SDOUT_TDO, SDI_TDI and SCLK_TCK are configured as GSPI pins for normal host interface operation. 27 CS_TMS Synchronous with SCLK_TCK Input CONTROL SIGNAL INPUT Signal levels are LVCMOS/LVTTL compatible. Chip Select / Test Mode Select Host Mode (JTAG/HOST = LOW) CS_TMS operates as the host interface chip select, CS, and is active LOW. JTAG Test Mode (JTAG/HOST = HIGH) CS_TMS operates as the JTAG test mode select, TMS, and is active HIGH. NOTE: If the host interface is not being used, tie this pin HIGH. Table 1-1: Pin Descriptions (Continued) Pin Number Name Timing Type Description |
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