SLVUAW9C September 2016 – February 2020 UCD90320
The PAGE command provides the ability to configure, control, and monitor multiple outputs on one unit using a single PMBus physical address. When the PAGE command is sent, all subsequent commands are applied to settings for the rail selected by the PAGE command.
The Fusion Digital Power Designer software uses the term Rail to refer to a voltage output. Rails are numbered starting with one, whereas pages are numbered starting at zero. The relationship between the PMBus PAGE value and the Rail number is shown in Table 3.
Setting PAGE = 0xFF means that the following write commands are to be applied to all outputs. A page setting of 0xFF is invalid for all read commands, with the exception of the PAGE command.
Page | Output Rail |
---|---|
0 | 1 |
1 | 2 |
2 | 3 |
... | ... |
23(1) | 24 |
24 – 254 | Invalid |
255 (0xFF) | All |
Section 11.10 of the PMBus specification describes the PAGE command in more detail.