SH7670 Datasheet, PDF (686/1292 Pages) Renesas Technology Corp – 32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7670 Series

Section 17 USB 2.0 Host/Function Module (USB)
Bit
Bit Name
11, 10 MBW[1:0]
9

8
BIGEND
7 to 4 
Initial
Value R/W
All 0
R/W
0
R
0
R/W
All 0
R/W
Description
FIFO Port Access Bit Width
Specifies the bit width for accessing the DnFIFO
port.
00: 8-bit width
01: 16-bit width
10: 32-bit width
11: Setting prohibited
When the selected pipe is in the receiving direction,
once reading data is started after setting these bits,
these bits should not be modified until all the data
has been read.
When the selected pipe is in the receiving direction,
set the CURPIPE and MBW bits simultaneously.
When the selected pipe is in the transmitting
direction, the bit width cannot be changed from the
8-bit width to the 16-/32-bit width or from the 16-bit
width to the 32-bit width while data is being written
to the buffer memory.
The odd number of bytes can be written through
byte-access control even when 8- or 16-bit width is
selected.
Reserved
This bit is always read as 0. The write value should
always be 0.
FIFO Port Endian Control
Specifies the byte endian for the DnFIFO port.
0: Little endian
1: Big endian
Reserved
These bits are always read as 0. The write value
should always be 0.
Rev. 1.00 Nov. 14, 2007 Page 660 of 1262
REJ09B0437-0100