GE Industrial Solutions 12A Digital SlimLynx Open Frame - Manual (Page 25)

GE
Data Sheet
12A Digital SlimLynx TM Open Frame: Non-Isolated DC-DC Power Modules
3Vdc –14.4Vdc input; 0.45Vdc to 5.5Vdc output; 12A Output Current
February 19, 2014 ©2014 General Electric Corporation. All rights reserved. Page 25
Summary of Supported PMBus Commands
Please refer to the PMBus 1.1 specification for more details of these commands.
Table 6
Hex
Code
Command Brief Description
Non-Volatile
Memory Storage
01 OPERATION
Turn Module on or off. Also used to margin the output voltage
Format Unsigned Binary
Bit Position 7 6 5 4 3 2 1 0
Access r/w r r/w r/w r/w r/w r r
Function On X Margin X X
Default Value 0 0 0 0 0 0 X X
02 ON_OFF_CONFIG
Configures the ON/OFF functionality as a combination of analog ON/OFF pin
and PMBus commands
Format Unsigned Binary
Bit Position 7 6 5 4 3 2 1 0
Access r r r r/w r/w r/w r/w r
Function X X X pu cmd cpr pol cpa
Default Value 0 0 0 1 0 1 1 1
YES
03 CLEAR_FAULTS
Clear any fault bits that may have been set, also releases the SMBALERT# signal
if the device has been asserting it.
10 WRITE_PROTECT
Used to control writing to the module via PMBus. Copies the current register
setting in the module whose command code matches the value in the data byte
into non-volatile memory (EEPROM) on the module
Format Unsigned Binary
Bit Position 7 6 5 4 3 2 1 0
Access r/w r/w r/w x x x x x
Function bit7 bit6 bit5 X X X X X
Default Value 0 0 0 X X X X X
Bit5: 0 – Enables all writes as permitted in bit6 or bit7
1 – Disables all writes except the WRITE_PROTECT, OPERATION
and ON_OFF_CONFIG (bit 6 and bit7 must be 0)
Bit 6: 0 – Enables all writes as permitted in bit5 or bit7
1 – Disables all writes except for the WRITE_PROTECT and
OPERATION commands (bit5 and bit7 must be 0)
Bit7: 0 – Enables all writes as permitted in bit5 or bit6
1 – Disables all writes except for the WRITE_PROTECT command
(bit5 and bit6 must be 0)
YES
11 STORE_DEFAULT_ALL
Copies all current register settings in the module into non-volatile memory
(EEPROM) on the module. Takes about 50ms for the command to execute.
12 RESTORE_DEFAULT_ALL
Restores all current register settings in the module from values in the module
non-volatile memory (EEPROM)
13 STORE_DEFAULT_CODE
Copies the current register setting in the module whose command code
matches the value in the data byte into non-volatile memory (EEPROM) on the
module
Bit Position 7 6 5 4 3 2 1 0
Access w w w w w w w w
Function Command code
14 RESTORE_DEFAULT_CODE
Restores the current register setting in the module whose command code
matches the value in the data byte from the value in the module non-volatile
memory (EEPROM)
Bit Position 7 6 5 4 3 2 1 0
Access w w w w w w w w
Function Command code
20 VOUT_MODE
The module has MODE set to Linear and Exponent set to -10. These values
cannot be changed
Bit Position 7 6 5 4 3 2 1 0
Access r r r r r r r r
Function Mode Exponent
Default Value 0 0 0 1 0 1 1 0