SH7205 Datasheet, PDF (1322/1904 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7200 Series

Section 24 USB 2.0 Host/Function Module (USB)
24.4.6 Bulk Transfers (PIPE1 to PIPE5)
The buffer memory specifications for bulk transfers (single/double buffer setting, or
continuous/non-continuous transfer mode setting) can be selected. The maximum size that can be
set for the buffer memory is 2 Kbytes. The buffer memory state is controlled by this module, with
a response sent automatically for a PING packet/NYET handshake.
24.4.7 Interrupt Transfers (PIPE6 to PIPE9)
When the function controller function is selected, this module carries out interrupt transfers in
accordance with the timing controlled by the host controller. In interrupt transfers, PING packets
are ignored (no responses are sent), and the ACK, NAK, and STALL responses are carried out
without an NYET handshake response being made.
When the host controller function is selected, this module can set the timing of issuing a token
using the interval timer. This module issues an OUT token without issuing a PING token even in
the OUT direction.
This module does not support high bandwidth transfers of interrupt transfers.
Rev. 1.00 Mar. 25, 2008 Page 1290 of 1868
REJ09B0372-0100