SH7760 Datasheet, PDF (510/1345 Pages) Renesas Technology Corp – SuperHTM RISC engine

11.6.13 USB Endian Conversion Function
The DMABRG supports the endian conversion function for data transfers between the peripheral
bus and USB bridge bus, and the external bus and USB bridge bus shown in figure 11.40. The data
alignment method of the USB is specified by the CVRT bits in DMAUCR. The data alignment
method between the peripheral bus and USB bridge bus differs from that between the external bus
and USB bridge bus. Table 11.12 shows the data alignment method between the peripheral bus
and USB bridge bus and table 11.13 shows that between the external bus and USB bridge bus.
USB bridge bus
32 bits
32 bits
Peripheral bus
USB
32 bits
DMABRG
32 bits
External bus
32 bits
Synchronous
DRAM
Bus state
controller
Figure 11.40 Bus Arrangement for Data Alignment
Rev. 1.0, 02/03, page 460 of 1294