Maxim Integrated MAX15301 PMBus Command Set - Manual (Page 36)

MAX15301 PMBus Command Set User’s Guide
Rev 1 Page 36 of 53
Device Identification Commands
CAPABILITY
Reference: Standard Command Lockable: N/A
Command Code: 0x19 Format: Bit field
Data Bytes: 1 Units: N/A
Transfer: Read Byte Factory Value: 0xA0
Description/Notes: See Section 11.12 of the PMBus Specification Part II.
PMBUS_REVISION
Reference: Standard Command Lockable: N/A
Command Code: 0x98 Format: Bit field
Data Bytes: 1 Units: N/A
Transfer: Read Byte Factory Value: 0x42 (see Description)
Description/Notes: See Section 22.1 of the PMBus Specification Part II.
Note that the Maxim interpretation of the specification is to omit bit #4, placing the Part I Revision
level in bits [7:5] and the Part II Revision level in bits [3:0].
Bits [7:5] describe the PMBus specification Part I revision level as follows:
000 Revision 1.0
001 Revision 1.1
010 Revision 1.2
Bit [4] is unused and is set to zero.
Bits [3:0] describe the PMBus specification Part II revision level as follows:
0000 Revision 1.0
0001 Revision 1.1
0010 Revision 1.2
MFR_ID
Reference: Standard Command Lockable: Yes
Command Code: 0x99 Format: ASCII string
Data Bytes: 8 Units: N/A
Transfer: Read/Write Block Factory Value: Null string
Description/Notes: See Section 22.2.1 of the PMBus Specification Part II.
Note that the MAX15301 implements MFR_ID as a fixed-width string, not as part of a shared memory
space.