Hi all
Good day.
I have some questions about the Isochronous Timestamp Packet (ITP) and Bus Interval Adjustment Message (BIAM):
1) As we know, in USB 3.0, there is a new packet which is ITP, is used to carry host's timing information to devices for synchronization. So, actually what is the "Host's timing information" mean? Is that mean the host' s clock or the external clock from host?
2) I read from the BIAM section in USB 3.0 spec, it stated that BIAM can used by device to synchronize the host's bus interval clock with an external clock. So now, if ITP carry the host's timing info, the device will synchronize to host's clock or external clock?
Sorry for my bad English, hope you all understand my questions and give me a hand. Thanks in advance!
Regards
ChongHan