SH7764 Datasheet, PDF (994/1752 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperHTM RISC Engine Family SH-4A Series

Section 21 USB 2.0 Host/Function Module (USB)
Bit
NRDY
BRDY
BCHG
DTCH
ATTCH
Interrupt Name Cause of Interrupt
Function That
Generates the Related
Interrupt
Status
Buffer not ready When the host controller function is
interrupt
selected:
Host, function NRDYSTS.
PIPENRDY
• 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 NAK is returned for an
IN/OUT/PING token.
• When a CRC error or a bit stuffing
error occurred during data
reception in isochronous transfer
• When an overrun/underrun
occurred during data reception in
isochronous transfer
Buffer ready
interrupt
When the buffer is ready (reading or Host, function BRDYSYS
writing is enabled)
PIPEBRDY
Bus change
interrupt
When a change of USB bus state is
detected
Host, function 
Disconnection When disconnection of a peripheral Host

detection during device during full-speed operation is
full-speed
detected
operation
Device
When J-state or K-state is detected on Host

connection
the USB port for 2.5 µs.
detection
Used for checking whether a
peripheral device is connected.
Rev. 1.00 Nov. 22, 2007 Page 938 of 1692
REJ09B0360-0100