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Section 26 USB 2.0 Host/Function Module
Page 1478 of 2108 R01UH0134EJ0400 Rev. 4.00
Sep 24, 2014
SH7262 Group, SH7264 Group
Bit Interrupt Name Cause of Interrupt
Function That
Generates the
Interrupt
Related
Status
NRDY Buffer not ready
interrupt
When the host controller function is
selected:
When STALL is received from the
peripheral side for the issued token
When a response cannot be
received correctly from the
peripheral side for the issued token
(No response is returned three
consecutive times or a packet
reception error occurred three
consecutive times.)
When an overrun/underrun
occurred during isochronous
transfer
When the function controller function is
selected:
When a token is received while the
PID bits are set to BUF and
transmission is not enabled for the
buffer memory
When a CRC error or a bit stuffing
error occurred during data
reception in isochronous transfer
When an interval error occurred
during data reception in
isochronous transfer
Host, function NRDYSTS.
PIPENRDY
BRDY Buffer ready
interrupt
When the buffer is ready (reading or
writing is enabled)
Host, function BRDYSYS
PIPEBRDY
BCHG Bus change
interrupt
When a change of USB bus state is
detected
Host