SH7203 Datasheet, PDF (1242/1686 Pages) Renesas Technology Corp – 32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7200 Series

Section 23 USB 2.0 Host/Function Module (USB)
5. Interval errors
• During an isochronous IN transfer, the token could not be received during the interval frame.
• During an isochronous OUT transfer, the OUT token was received during frames other than
the interval frame.
Table 23.24 Error Detection when a Token is Received
Detection
Priority
1
Error
PID errors
2
CRC error and bit stuffing errors
3
Overrun and underrun errors
4
Interval errors
Generated Interrupt and Status
No interrupts are generated in both
cases when the host controller function
is selected and the function controller
function is selected (ignored as a
corrupted packet).
No interrupts generated in both cases
when the host controller function is
selected and the function controller
function is selected (ignored as a
corrupted packet).
An NRDY interrupt is generated to set
the OVRN bit in both cases when host
controller function is selected and
function controller function is selected.
When the host controller function is
selected, no tokens are transmitted.
When the function controller function is
selected, a zero-length packet is
transmitted in response to IN token.
However, no data packets are received
in response to OUT token.
An NRDY interrupt is generated when
the function controller function is
selected. It is not generated when the
host controller function is selected.
Rev. 2.00 Apr. 16, 2008 Page 1212 of 1652
REJ09B0313-0200