About Intel Black Box for common redundant power supply format question.

Hello ,

    I reading the CRPS design guide about PMBus Black box Command

The meaning as below:

        Name: MFR_BLACKBOX

        Format: Read Block with PEC (238 bytes)

        Code: DCh

The content have "System Tracking Data(47 bytes)" and "Power supply event data(38 byte per event)",

and the "Power supply event " can record 5 event,

so.. the total length of the command as 47 bytes + (38 bytes *5 ) = 237 bytes,

I calculated the result with the design guide length is not equal (238 byte ≠ 237bytes),

Is anyone knew the correct format about this command(DCh) , or can tell me what's detail I missed?

Alan Chen,