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XIO2000 数据表(PDF) 21 Page - Texas Instruments |
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XIO2000 数据表(HTML) 21 Page - Texas Instruments |
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21 / 150 page  Introduction 9 November 2005 SCPS097B Table 2−3. Power Supply Terminals SIGNAL BALL I/O TYPE EXTERNAL PARTS DESCRIPTION VCCP A04, J01 PWR Bypass capacitors 5.0-V or 3.3-V PCI bus clamp voltage to set maximum I/O voltage tolerance of the secondary PCI bus signals VDD_15 D09, H14, J04, P07, P15 PWR Bypass capacitors 1.5-V digital core power terminals VDDA_15 F17, J14, J15, G15 PWR Pi filter 1.5-V analog power terminal VDD_33 C06, C13, D10, E03, H04, M03, P09, P10, P11, R05, R14, T13 PWR Bypass capacitors 3.3-V digital I/O power terminals VDD_33_AUX K14 PWR Bypass capacitors 3.3-V auxiliary power terminal Note: This terminal is connected to VSS through a pulldown resistor if no auxiliary supply is present. VDDA_33 D15, K15 PWR Pi filter 3.3-V analog power terminal Table 2−4. Ground Terminals SIGNAL BALL I/O TYPE DESCRIPTION VSS C05, C14, D03, D08, D11, G04, G17, K04, K17, N03, P08, R04, R06, R10, R11, R12, R13, R17 GND Digital ground terminals VSS G07, G08, G09, G10, G11, H07, H08, H09, H10, H11, J07, J08, J09, J10, J11, K07, K08, K09, K10, K11, L07, L08, L09, L10, L11 GND Ground terminals for thermally-enhanced package VSSA B17, E15, F15, F16, G14, G16, H15, J16, L15 GND Analog ground terminal Table 2−5. Combined Power Outputs SIGNAL BALL I/O TYPE EXTERNAL PARTS DESCRIPTION VDD_15_COMB M17 Feed through Bypass capacitors Internally-combined 1.5-V main and VAUX power output for external bypass capacitor filtering. Supplies all internal 1.5-V circuitry powered by VAUX. Caution: Do not use this terminal to supply external power to other devices. VDD_33_COMB K16 Feed through Bypass capacitors Internally-combined 3.3-V main and VAUX power output for external bypass capacitor filtering. Supplies all internal 3.3-V circuitry powered by VAUX. Caution: Do not use this terminal to supply external power to other devices. VDD_33_COMBIO L14 Feed through Bypass capacitors Internally-combined 3.3-V main and VAUX power output for external bypass capacitor filtering. Supplies all internal 3.3-V input/output circuitry powered by VAUX. Caution: Do not use this terminal to supply external power to other devices. |
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