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0x00 ManufacturerAccess() and 0x44 ManufacturerBlockAccess()
105
SLUUBD3D–September 2015–Revised September 2018
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Copyright © 2015–2018, Texas Instruments Incorporated
SBS Commands
Status Condition Action
Initiate
OperationStatus()[SEC1,SEC0] = 0,1 AND
0x0037 to ManufacturerAccess()
OperationStatus()[AUTH] = 1
160-bit random number available at ManufacturerInput()
Enter Key
Correct 128-bit Key written to ManufacturerInput() in
the format
0xAABBCCDDEEFFGGHHIIJJKKLLMMNNOOPP,
where AA is LSB.
Wait time 250 ms
OperationStatus()[AUTH] = 0
Device returns 160-bit HMAC digest at
ManufacturerInput() in the format
0xAABBCCDDEEFFGGHHIIJJKKLLMMNNOOPPQQRR
SSTTT, where AA is LSB. The HMAC digest was
calculated using the random number + key.
Compare with own calculations, check the validity of the
key.
17.2.33 ManufacturerAccess() 0x0041 Device Reset
This command resets the device. When 0x0012 or 0x0041 is written to ManufacturerAccess(), the
bq78350-R1 is reset.
17.2.34 ManufacturerAccess() 0x0050 SafetyAlert
This command returns the SafetyAlert() flags on ManufacturerBlockAccess() or ManufacturerData().
Status Condition Action
Activate 0x0050 to ManufacturerAccess()
Outputs SafetyAlert() flags on
ManufacturerBlockAccess() or ManufacturerData()
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
RSVD RSVD RSVD RSVD RSVD RSVD RSVD RSVD RSVD RSVD RSVD OC CTOS RSVD PTOS RSVD
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
RSVD OCDL OTF
AFE_OV
RD
UTD UTC OTD OTC ASCDL ASCD AOLDL AOLD OCD OCC COV CUV
RSVD (Bits 31–21): Reserved
OC (Bit 20): Overcharge
1 = Detected
0 = Not Detected
CTOS (Bit 19): Charge Timeout Suspend
1 = Detected
0 = Not Detected
RSVD (Bit 18): Reserved
PTOS (Bit 17): Precharge Timeout Suspend
1 = Detected
0 = Not Detected
RSVD (Bits 16–15): Reserved
OCDL (Bit 14): Overcurrent During Discharge Latch
1 = Detected
0 = Not Detected
OTF (Bit 13): Overtemperature Fault
1 = Detected
0 = Not Detected
AFE_OVRD (Bit 12): AFE Alert
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