SH7205 Datasheet, PDF (1297/1904 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7200 Series

Section 24 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 PIPENRDY
• When STALL is received from the
function side to the issued token
• When the response from the
function side to the issued token
could not be received correctly (no
response or three successive
packet receive errors).
• When an overrun/underrun
occurred during isochronous
transfer
When the function controller function is
selected:
• When the module sent a NAK in
response to an IN token, OUT
token, or PING token
• When an OUT token has been
received and there is no area in
which data can be stored in the
buffer memory, so reception of
data is not possible
• When a CRC error or a bit stuffing
error occurred during isochronous
transfer
Buffer ready
interrupt
When the buffer is ready (reading or Host, function PIPENRDY
writing is enabled)
Bus change
interrupt
When a change of USB bus state is
detected
Host, function 
Device
When disconnection of a USB function Host

disconnection is detected
detection
Device
When J-state or K-state is detected on Host

connection
the USB port for 2.5 µs. This interrupt
detection
can be used to detect whether a USB
function is connected.
Rev. 1.00 Mar. 25, 2008 Page 1265 of 1868
REJ09B0372-0100