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IR36021 Folha de dados(PDF) 39 Page - International Rectifier |
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IR36021 Folha de dados(HTML) 39 Page - International Rectifier |
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39 / 41 page ![]() IR36021 DIGITAL POL BUCK CONTROLLER with I2C AND PMBus Interface February 27, 2013 | Rev 3.5 39 COMMAND PMBUS PROTOCOL COMMAND CODE DESCRIPTION MFR_REVISION Block Read, byte count = 2 9Bh Returns a 2 byte code with the following values: Low Byte always = 01h High Byte is the revision number in hex. WRITE_REGISTER_PROCESS_CALL Process Call D0h Write to configuration registers READ_REGISTER_PROCESS_CALL Process Call D1h Read from configuration & status registers GAMER COMMAND Write Word D2h Enables/disables Gamer Mode and associated options SET_POINTER Write Byte D3h Sets the register address for reading/writing GET_POINTER Read Byte D4h Reads 1 byte from the previously set register address WRITE_REGISTER Write Word D5h Writes 1 byte to the previously set register address SET_I2C Read/Write Byte D6h Sets the 7‐bit I2C address according to the bit meanings: Bit <7> Enable I2C Bus (0 – Disable, 1 – Enable) Bit<6:0> 7‐bit I2C address READ_EFFICIENCY Read Word D7h Reports the efficiency in %1 MASK_STATUS_WORD Read/Write Word D8h Masks STATUS_WORD bits. MASK_TEMPERATURE Read/Write Byte D9h Masks STATUS_TEMPERATURE MASK_CML Read/Write Byte Dah Masks STATUS_CML MASK_MANUFACTURER Read/Write Byte DBh Masks STATUS_MFR_SPECIFIC Note 1 – PMBus: Linear Data Format is used 11‐BIT LINEAR DATA FORMAT Monitored parameters use the Linear Data Format (Figure 49) encoding into 1 Word (2 bytes), where: N Y Value 2 Note N and Y are “signed” values. If, VOUT is set to linear format (by VOUT_MODE), then N is set by the VOUT_MODE command and only Y is returned in the data‐field as a 16‐bit unsigned number. 7 6 5 4 3 2 1 0 7 6 5 4 3 2 1 Figure 49: 11‐bit Linear Data Format Databyte High Databyte Low N Y |
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