Rainbow Electronics MAX16064 User Manual
Page 43
READ_VOUT (8Bh)
The READ_VOUT command returns the actual mea-
sured (not commanded) output voltage across RS_+
and RS_-. If filter mode is enabled, the filtered value is
returned.
The 2 data bytes are in DIRECT format. Valid values are
the same as VOUT_COMMAND.
The default READ_VOUT value is 00h.
READ_TEMPERATURE_1 (8Dh)
The MAX16064 supports only one temperature reading,
READ_TEMPERATURE_1. The MAX16064 returns the
actual on-chip measured temperature in degrees
Celsius.
The 2 data bytes are in DIRECT format. Valid values are
the same as OT_FAULT_LIMIT.
The default READ_TEMPERATURE_1 value is 00h.
PMBUS_REVISION (98h)
The PMBUS_REVISION command returns the revision
of the PMBus specification to which the MAX16064 is
compliant.
The command has 1 data byte. Bits [7:5] indicate the
revision of PMBus specification Part I to which the
MAX16064 is compliant. Bits [4:0] indicate the revision
of PMBus specification Part II to which the MAX16064 is
compliant. The values are shown in Table 15.
This command is read only.
The PMBUS_REVISION value returned is 00h which
indicates that the MAX16064 is compliant with Part I
Rev 1.0 and Part II Rev 1.0.
MFR_ID (99h)
The MFR_ID command returns the MAX16064 manu-
facturer’s identification.
The default MFR_ID value is 4Dh (M).
This command is read only.
MFR_MODEL (9Ah)
The MFR_MODEL command returns the MAX16064
model number.
The default MFR_MODEL value is 43h (C).
This command is read only.
MFR_REVISION (9Bh)
The MFR_REVISION command reads the ASCII charac-
ters that contain the MAX16064 revision number with a
block read command.
The default MFR_REVISION value is 31h (1).
This command is read only.
MFR_LOCATION (9Ch)
The MFR_LOCATION command loads the device with
text (ISO/IEC 8859-1) characters that identify the facility
that manufactures the power supply. The maximum
number of characters is 20. This can be written to exter-
nal EEPROM using the STORE_DEFAULT_ALL com-
mand. If an external EEPROM is not used, the
command returns the text string MXIM.
MFR_DATE (9Dh)
The MFR_DATE command loads the device with text
(ISO/IEC 8859-1) characters that identify the date of
manufacture of the power supply. The maximum num-
ber of characters is 8. This can be written to external
EEPROM using the STORE_DEFAULT_ALL command.
If an external EEPROM is not used, the command
returns the text string 080416.
MFR_SERIAL (9Eh)
The MFR_SERIAL command loads the device with text
(ISO/IEC 8859-1) characters that uniquely identify the
power supply. The maximum number of characters is
16. This can be written to external EEPROM using the
STORE_DEFAULT_ALL command. If an external
EEPROM is not used, the command returns the text
string 00000000.
USER_DATA_00 (B0h)
The USER_DATA_00 command loads the device with
user data. The maximum number of bytes is 40. This can
be written to external EEPROM using the
STORE_DEFAULT_ALL command. If an external
EEPROM is not used, the command returns 00h for all
bytes.
MFR_SMB_LOOPBACK (D0h)
The MFR_SMB_LOOPBACK command returns the data
word previously received by the MAX16064. The
SMBus master writes a data word to the MAX16064
using this command and then retrieves the data word.
A valid communication channel is established if the
master reads back the same word.
Note that if another command is sent in between the
write MFR_SMB_LOOPBACK command and the read
MFR_SMB_LOOPBACK command, the MAX16064
returns whatever last command data word it receives.
MAX16064
±0.3% Accurate, Quad, Power-Supply Controller with
Active-Voltage Output Control and PMBus Interface
______________________________________________________________________________________
43
Table 15. PMBus Revision Data Byte
Contents
BITS [7:5]
PART I
REVISION
BITS [4:0]
PART II
REVISION
000
1.0
00000
1.0