Renesas R5S72622 Manual Do Utilizador

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Section 26   USB 2.0 Host/Function Module 
R01UH0134EJ0400  Rev. 4.00  
 
Page 1369 of 2108 
Sep 24, 2014 
 
 
 
SH7262 Group, SH7264 Group 
Bit Bit 
Name 
Initial 
Value R/W Description 
14 REW 
R/W* Buffer 
Pointer 
Rewind 
Specifies whether or not to rewind the buffer pointer.
0: The buffer pointer is not rewound. 
1: The buffer pointer is rewound. 
When the selected pipe is in the receiving direction, 
setting this bit to 1 while the FIFO buffer is being read 
allows re-reading the FIFO buffer from the first data 
(in double buffer mode, re-reading the currently-read 
FIFO buffer plane from the first data is allowed). 
Do not set REW to 1 simultaneously with modifying 
the CURPIPE bits. Before setting REW to 1, be sure 
to check that FRDY is 1. 
To re-write to the FIFO buffer again from the first data 
for the pipe in the transmitting direction, use the 
BCLR bit. 
13, 12 
 All 
Reserved 
These bits are always read as 0. The write value 
should always be 0.