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AM79C971VCW 数据表(PDF) 17 Page - Advanced Micro Devices |
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AM79C971VCW 数据表(HTML) 17 Page - Advanced Micro Devices |
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17 / 265 page ![]() Am79C971 17 PIN DESIGNATIONS Listed By Group Note: 1. Not including test features. Listed By Driver Type The following table describes the various types of out- put drivers used in the Am79C971 controller. All IOL and IOH values shown in the table apply to 5 V signaling. See the DC Characteristics section for the values ap- plying to 3.3 V signaling. A sustained tri-state signal is a low active signal that is driven high for one clock period before it is left floating. DO, TDO, and TPO are differential output drivers. Their characteristics and the one of the XTAL output are de- scribed in the DC Characteristics section. Pin Name Pin Function Type1 Driver No. of Pins Power Supplies AVDDB Analog I/O Buffer Power P NA 3 AVSSB Analog I/O Buffer Ground P NA 1 VDD_PLL Analog PLL Power P NA 1 VSS_PLL Analog PLL Ground P NA 1 VDD Digital Power P NA 4 VSS Digital Ground P NA 6 VDDB I/O Buffer Power P NA 5 VSSB I/O Buffer Ground P NA 13 VDD_PCI PCI I/O Buffer Power P NA 5 Name Type IOL (mA) IOH (mA) Load (pF) LED LED 12 -0.4 50 OMII1 Totem Pole 4 -4 50 OMII2 Totem Pole 4 -4 390 O6 Totem Pole 6 -0.4 50 OD6 Open Drain 6 NA 50 STS6 Sustained Tri-State 6 -2 50 TS3 Tri-State 3 -2 50 TS6 Tri-State 6 -2 50 TSMII Tri-State 4 -4 470 |
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