SH7670 Datasheet, PDF (809/1292 Pages) Renesas Technology Corp – 32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7670 Series

Section 17 USB 2.0 Host/Function Module (USB)
(11) SACK Interrupt
The SACK interrupt is generated when an ACK response for the transmitted setup packet has been
received from the peripheral device with the host controller function selected. The SACK interrupt
can be used to confirm that the setup transaction has been completed successfully.
(12) SIGN Interrupt
The SIGN interrupt is generated when an ACK response for the transmitted setup packet has not
been correctly received from the peripheral device three consecutive times with the host controller
function selected. The SIGN interrupt can be used to detect no ACK response transmitted from the
peripheral device or corruption of an ACK packet.
(13) ATTCH Interrupt
The ATTCH interrupt is generated when J-state or K-state of the full-speed or low-speed level
signal is detected on the USB port for 2.5 µs in host controller mode. To be more specific, the
ATTCH interrupt is detected on any of the following conditions.
(a) When K-state, SE0, or SE1 changes to J-state, and J-state continues 2.5 µs.
(b) When J-state, SE0, or SE1 changes to K-state, and K-state continues 2.5 µs.
(14) EOFERR Interrupt
The EOFERR interrupt is generated when it is detected that communication is not completed at
the EOF2 timing prescribed by USB Specification 2.0.
After detecting the EOFERR interrupt, this module controls hardware as described below
(irrespective of the set value of the corresponding interrupt enable bit). Software should terminate
all the pipes in which communications are currently carried out for the pertinent port and perform
re-enumeration of the pertinent port.
(a) Modifies the UACT bit for the port in which an EOFERR interrupt has been detected to 0.
(b) Puts the port in which an EOFERR interrupt has been generated into the idle state.
Rev. 1.00 Nov. 14, 2007 Page 783 of 1262
REJ09B0437-0100