BCM3814x60E10A5yzz
Supported Command List
Command
Code
Function
Default Data Content
Data Bytes
Access BCM stored information for all connected
devices
PAGE
00h
01h
02h
00h
80h
1Dh
1
1
1
OPERATION
ON_OFF_CONFIG
Turn BCMs on or off
Defines startup when power is applied as well
as immediate on/off control over the BCMs
CLEAR_FAULTS
03h
19h
Clear all BCM and all internal µC faults
Internal µC PMBusTM key capabilities set by factory
BCM over temperature protection
BCM over temperature warning
N/A
20h
64h
64h
64h
64h
64h
64h
00h
00h
00h
00h
00h
None
CAPABILITY
1
2
2
2
2
2
2
2
1
2
1
1
OT_FAULT_LIMIT
OT_WARN_LIMIT
VIN_OV_FAULT_LIMIT
VIN_OV_WARN_LIMIT
IIN_OC_FAULT_LIMIT
IIN_OC_WARN_LIMIT
TON_DELAY
4Fh[1]
51h[1]
55h[1]
57h[1]
5Bh[1]
5Dh[1]
60h[1]
78h
BCM VHI overvoltage warning
BCM VHI overvoltage protection
BCM ILO overcurrent protection
BCM ILO overcurrent warning
Startup delay additional to any BCM fixed delays
Summary of BCM faults
STATUS_BYTE
STATUS_WORD
STATUS_IOUT
79h
Summary of BCM fault conditions
BCM overcurrent fault status
7Bh
STATUS_INPUT
7Ch
BCM overvoltage and under voltage fault status
BCM over temperature and under temperature
fault status
STATUS_TEMPERATURE
7Dh
00h
1
STATUS_CML
7Eh
80h
88h
89h
8Bh
8Ch
8Dh
96h
98h
99h
9Ah
9Bh
9Ch
9Dh
9Eh
Internal µC PMBus Communication fault
Other BCM status indicator
Reads HI side voltage
00h
00h
1
1
STATUS_MFR_SPECIFIC
READ_VIN
FFFFh
2
READ_IIN
Reads HI side current
FFFFh
2
READ_VOUT
Reads LO side voltage
FFFFh
2
READ_IOUT
Reads LO side current
FFFFh
2
READ_TEMPERATURE_1
READ_POUT
BCM temperature
FFFFh
2
Reads LO side power
FFFFh
2
PMBUS_REVISION
MFR_ID
Internal µC PMBus compatible revision
Internal µC ID
22h
1
“VI”
2
MFR_MODEL
Internal µC or BCM model
Internal µC or BCM revision
Internal µC or BCM factory location
Internal µC or BCM manufacturing date
Internal µC or BCM serial number
BCM Minimum rated VHI
BCM Maximum rated VHI
BCM Minimum rated VLO
BCM Maximum rated VLO
BCM Maximum rated ILO
BCM Maximum rated PLO
Set BCM EN pin polarity
BCM K factor
Part Number
FW and HW revision
“AP”
18
18
2
MFR_REVISION
MFR_LOCATION
MFR_DATE
“YYWW”
Serial Number
Varies per BCM
Varies per BCM
Varies per BCM
Varies per BCM
Varies per BCM
Varies per BCM
02h
4
MFR_SERIAL
16
2
MFR_VIN_MIN
MFR_VIN_MAX
MFR_VOUT_MIN
MFR_VOUT_MAX
MFR_IOUT_MAX
MFR_POUT_MAX
BCM_EN_POLARITY
READ_K_FACTOR
READ_BCM_ROUT
SET_ALL_THRESHOLDS
A0h
A1h
A4h
A5h
A6h
A7h
D0h[1]
D1h
D4h
D5h[1]
2
2
2
2
2
1
Varies per BCM
Varies per BCM
646464646464h
2
BCM RLO
2
Set BCM supervisory warning and protection thresholds
6
Disable BCM overvoltage, overcurrent or
under voltage supervisory faults
DISABLE_FAULT
D7h[1]
00h
2
[1] The BCM must be in a disabled state during a write message.
BCM® in a VIA Package
Page 24 of 39
Rev 1.4
09/2016
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