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From: krishnaprasad.akula@i...<krishnaprasad.akula@i...>
Date: Fri Feb 6 05:25:34 CET 2004
Subject: [usb] HS EOP pattern
Hi
I have a doubt regarding the HS EOP pattern to be loaded into the hold
register.

USB 2.0 Transceiver macrocell specification(version 1.05) says a HS
packet should be ended with a bit stuff error. In chapter 6.2(Appendix)
Fig.32 , a detailed description of the HS EOP sequence is given.

1) Can someone tell me if the last data symbol is "K" on the bus then
what value should be loaded into hold register to send a EOP pattern of
all "J"s on the bus as mentioned in the specification.

2) Similarly if the last data symbol is "J" on the bus then what value
should be loaded into the hold register to send a EOP pattern of all "K"s
on the bus.

3) Do we need to disable NRZI encoding while sending the EOP pattern
for a HS packet??


Thanks & Regards
Prasad