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IR36021 датащи(PDF) 37 Page - International Rectifier |
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IR36021 датащи(HTML) 37 Page - International Rectifier |
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37 / 41 page ![]() IR36021 DIGITAL POL BUCK CONTROLLER with I2C AND PMBus Interface February 27, 2013 | Rev 3.5 37 Figure 48: Group Command TABLE 34: PMBUS COMMANDS COMMAND PMBUS PROTOCOL COMMAND CODE DESCRIPTION OPERATION Read/Write Byte 01h Enables or disables IR36021 output and controls margining CLEAR FAULTS Send Byte 03h Clear contents of Fault registers CAPABILITY Read Byte 19h Returns 1010xxxx to indicate Packet Error Checking is supported and Maximum bus speed is 400kHz VOUT_MODE Read/Write Byte 20h Sets the VOUT format to Linear Mode for the READ_VOUT, VOUT_MARGIN_LOW, VOUT_MARGIN_HIGH commands The default is LINEAR mode with exponent ‐9. LINEAR Mode: exponent of 1 to ‐16 is supported VOUT_MARGIN_HIGH Read/Write Word 25h Sets the high voltage when commanded by OPERATION. Works in conjunction with VOUT_MODE. VOUT_MARGIN_LOW Read/Write Word 26h Sets the low voltage when commanded by OPERATION. Works in conjunction with VOUT_MODE. STATUS_BYTE Read/Write Byte 78h Returns 1 byte where the bit meanings are: Bit <7> device busy fault Bit <6> output off (due to fault or enable) Bit <5> Output over‐voltage fault Bit <4> Output over‐current fault Bit <3> Input Under‐voltage fault Bit <2> Temperature fault Bit <1> Communication/Memory/Logic fault Bit <0>: Reserved STATUS_WORD Read Word 79h Returns 2 bytes where the Low byte is the same as the STATUS_BYTE data. The High byte has bit meanings are: |
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