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ADF10S48B
AC-DC Converter Technical Manual V1.1
PMBus Communication
Figure 36: PMBus timing diagram
PMBus Commands
Hex
Command
Data Type
Code
Name
Control commands
01h
OPERATION Read/Write
Byte
03h
CLEAR_FAU
Send Byte
LTS
11h
STORE_DEF
Send Byte
AULT_ALL
Output commands
20h
VOUT_MOD
Read Byte
E
21h
VOUT_COM
Read/Write
MAND
Word
Alarm command
51h
OT_WARN_
Read/Write
LIMIT
Word
Status command
79h
STATUS_W
Read Word 2
ORD
Monitoring commands
88h
READ_VIN
Read Word 2
8Bh
READ_VOU
Read Word 2
T
8Ch
READ_IOUT Read Word 2
8Dh
READ_TEM
Read Word 2
PERATURE_
1
96h
READ_POU
Read Word 2
T
GLOBAL ENERGY EFFICIENCY SPECIALIST
Data
Data
Byte
Format
1
-
0
-
0
-
1
-
2
Linear 16
2
Linear 11
-
Linear 11
Linear 16
Linear 11
Linear 11
Linear 11
Hex
Command
Data Type
Code
Name
Monitoring commands
97h
READ_PIN
Read Word 2
98h
PMBUS_RE
Read Byte
VISION
E9h
MFR_STATU
Read Word 2
S_WORD
ECh MFR_WRITE
Write Block 4
_SYSTIME
EFh
MFR_READ
Read Block 8
_LAST_ACD
ROP_TIME
F6h
WRITE_STA
Write Byte
NDBY
Data Format
Linear 11 data format
The linear data format is a two byte value with an
11-bit binary signed mantissa (two's complement)
and a 5-bit binary signed exponent (two's
complement), as shown in Figure 37.
Figure 37: Linear 11 data format
The relationship between N, Y, and actual value X
is given by the following equation:
N
X = Y x 2
Where:
Y is the 11-bit, two's complement mantissa.
N is the 5-bit, two's complement exponent.
VOUT data format
Commands related to output voltage are
VOUT_COMMAND, VOUT_MODE, and
READ_VOUT. The data for these commands is a
16 bit unsigned integer, as shown in Figure 38.
18
Data
Data
Byte
Format
Linear 11
1
-
-
Time: S
Low byte
in the
former,
the high
byte in
the post
1
0x20:
RESET
0x00:
Standby
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