To read the DF, send a block write to the MACSubcmd(), followed by the starting address, then send a block
read to the MACSubcmd(). The return data contains the starting address followed by 32 bytes of DF data in Little
Endian.
Read from DF example:
Taking the same assuming from the read DF example, to read DF:
a. Send the write block with command 0x3E, block = 0x00 + 0x40
b. Send the read block with command 0x3E
The returned block = a starting address + 32 bytes of DF dat
= 0x00 + 0x40 + data1_LowByte + data1_HighByte + data2_LowByte + data2_HighByte.... data32_LowByte +
data32_HighByte
The gauge supports an auto-increment on the address during a DF read. This greatly reduces the time required
to read out the entire DF. Continue with the read from the DF example. If another read block is sent with
command 0x3E, the gauge returns another 32 bytes of DF data, starting with address 0x4020.
12.2.46 MACSubcmd() 0xF080 Exit Calibration Output Mode
This command stops the output of calibration data to the MACData() command.
Status Condition Action
Activate MACData() = 1 AND 0xF080 to MACSubcmd() Stops output of ADC or CC data on MACData()
12.2.47 MACSubcmd() 0xF081 Output CC and ADC for Calibration
This command instructs the device to output the raw values for calibration purposes on MACData(). All values
are updated every 250 ms and the format of each value is 2's complement, MSB first.
Status Condition Action
Disable
ManufacturingStatus()[CAL_EN] = 1 AND
0xF080 to MACSubcmd()
ManufacturingStatus()[CAL_EN] = 0
Stops output of ADC and CC data on MACData()
Enable 0xF081 to MACSubcmd()
ManufacturingStatus()[CAL_EN] = 1
Outputs the raw CC and AD values on MACData() in the format
of ZZYYaaAAbbBBccCCddDDeeEEffFF
ggGGhhHHiiIIjjJJkkKK:
ZZ: rolling 8-bit counter, increments when values are refreshed.
YY: status, 1 when MACSubcmd() = 0xF081, 2 when
MACSubcmd() = 0xF082
AAaa: Current (Coulomb Counter)
BBaa: Cell Voltage 1
CCaa: Cell Voltage 2
DDaa:
EEee:
FFff:PACK Voltage
GGgg: VC2 (BAT) Voltage
HHhh: Cell Current 1
IIii: Cell Current 2
JJjj:
KKkk:
12.2.48 MACSubcmd() 0xF082 Output Shorted CC and ADC for Calibration
This command instructs the device to output the raw values for calibration purposes on MACSubcmd() or
MACData(). All values are updated every 250 ms and the format of each value is 2's complement, MSB first.
This mode includes an internal short on the coulomb counter inputs for measuring offset.
I2C Commands www.ti.com
92 BQ28Z610-R2 SLUUCO0 – APRIL 2022
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