Operation
11
SLUUBF9 – March 2016
Copyright © 2016, Texas Instruments Incorporated
bq4050EVM-561 Evaluation Module
Figure 8. Advanced Comm SMB Screen
Examples:
Reading an SMB Command.
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Read SBData Voltage (0x09)
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SMBus Read Word. Command = 0x09
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Word = 0x3A7B, which is hexadecimal for 14971 mV
Sending a MAC Gauging() to enable the FETs via ManufacturerAccess().
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With FETs disabled, send Gauging() (0x0022) to ManufacturerAccess().
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SMBus Write Word. Command = 0x00. Data = 00 22
Reading Operation Status() (0x0054) via ManufacturerAccess()
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Send the Operation Status() to ManufacturerAccess()
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SMBus Write Word. Command = 0x00. Data sent = 00 54
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Read the result from ManufacturerData()
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SMBus Read Block. Command = 0x23. Data read = 81 61 00 00
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That is 0x6181 for Operation Status A and 0x0000 for Operation Status B.
