Differences
This shows you the differences between two versions of the page.
| Both sides previous revisionPrevious revision | Next revisionBoth sides next revision | ||
| usp:usp_spec [2012/12/04 19:32] – [Terminology] admin | usp:usp_spec [2012/12/04 19:52] – [Master -> Slave Command Format] admin | ||
|---|---|---|---|
| Line 33: | Line 33: | ||
| ^ Checksum Word (required) | ^ Checksum Word (required) | ||
| - | *A command consists of two or more 32-bit words. The first 32-bit word is divided into 4 fields. The highest 8 bits (bits 31-24) identify the command. The next 16 bits (bits 23-8) is the Unit ID or Address. The next 8 bits specify the number of 32 bit words in the command including the first and last word. | + | *A command consists of two or more 32-bit words. The first 32-bit word is divided into 4 fields. The highest 8 bits (bits 31-24) identify the command. The next 16 bits (bits 23-8) is the ModuleID-Hi and ModuleID-Lo. The next 8 bits specify the number of 32 bit words in the command including the first and last word. |
| *The command word is followed by optional 1 – N data words. The interpretation of data depends on command. | *The command word is followed by optional 1 – N data words. The interpretation of data depends on command. | ||
| *The last word contains 3 bytes of data (bits 21-16) and simple additive checksum (bits 7-0). | *The last word contains 3 bytes of data (bits 21-16) and simple additive checksum (bits 7-0). | ||
