PCIE :doubt in memory write request TLP

[Guest]

http://xillybus.com/tutorials/pci-express-tlp-pcie-primer-tutorial-guide-1

in memory write request TLP :
The Address field is simply the address to which the first data DW is written. Well, bits 31-2 of this address. Note that the two LSBs of DW 2 in the TLP are zero, so DW 2 actually reads the write address itself. Multiply 0x3f6bfc10 by four, and you get 0xfdaff040.


could u explain me why do u multiplied address by 4

[support]

Hello,

Well, actually, I didn't. I multiplied the value in the address[31:2] field by 4 to obtain the actual address. If you read the contents of DW2 as a 32-bit word, you get the address itself, 0xfdaff040.

Regards,
Eli