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DP83256 Datasheet(PDF) 95 Page - Texas Instruments |
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DP83256 Datasheet(HTML) 95 Page - Texas Instruments |
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95 / 146 page  60 Signal Descriptions (Continued) POWER AND GROUND All power pins should be connected to a single a5V power supply using the recommended filtering All ground pins should be connected to a common 0V ground supply Bypassing and filtering requirements are given in a separate User Information Document Symbol Pin IO Description VCC ANALOG 20 Power Positive 5V power supply for the PLAYERa device’s CGM VCO GND ANALOG 21 Ground Power supply return for the PLAYERa device’s CGM VCO VCC CORE 88 Power Positive 5V power supply for the core PLAYER section logic gates GND CORE 87 Ground Power supply return for the core PLAYER section logic gates VCC ECL 31 Power Positive 5V power supply for the PLAYERa device’s ECL logic gates 34 44 56 GND ECL 35 Ground Power supply return for the PLAYERa device’s ECL logic gates 45 55 VCC ESD 28 Power Positive 5V power supply for the PLAYERa device’s ESD protection circuitry GND ESD 29 Ground Power supply return for the PLAYERa device’s ESD protection circuitry VCC IO 11 Power Positive 5V power supply for the inputoutput buffers 65 79 98 GND IO 12 Ground Power supply return for the inputoutput buffers 64 78 97 SPECIAL CONNECT PINS These are pins that have special connection requirements No Connect (NC) pins should not be connected to anything This means not to power not to ground and not to each other Reserved 0 (RES 0) pins must be connected to ground These pins are not used to supply device power so they do not need to be filtered or bypassed Reserved 1 (RES 1) pins must be connected to power These pins are not used to supply device power so they do not need to be filtered or bypassed Symbol Pin IO Description NC 49 54 No Connect Pins should not be connected to anything This means not to power not to ground and not to each other RES 0 18 19 Reserved 0 Pins must be connected to ground These pins are not used to supply device power so they do not need to be filtered or bypassed 48 50 51 52 53 57 58 84 RES 185 Reserved 1 Pins must be connected to power These pins are not used to supply device power so they do not need to be filtered or bypassed 94 |
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