SH7670 Datasheet, PDF (751/1292 Pages) Renesas Technology Corp – 32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7670 Series

Section 17 USB 2.0 Host/Function Module (USB)
Bit
7 to 0
Bit Name
Initial
Value R/W
BUFNMB[7:0] H'00 R/W
Description
Buffer Number
These bits specify the FIFO buffer number for the
selected pipe (from H'04 to H'7F).
When the selected pipe is one of PIPE1 to PIPE5,
any value can be set to these bits according to the
user system.
BUFNUMB = H'00 to H'03 are used exclusively for
DCP.
BUFNMB = H'04 is used exclusively for PIPE6.
When PIPE6 is not used, H'04 can be used for
other pipes.
When PIPE6 is selected, writing to these bits is
invalid and H'04 is automatically assigned by this
module.
BUFNMB = H'05 is used exclusively for PIPE7.
When PIPE7 is not used, H'05 can be used for
other pipes.
When PIPE7 is selected, writing to these bits is
invalid and H'05 is automatically assigned by this
module.
BUFNUMB = H'06 is used exclusively for PIPE8.
When PIPE8 is not used, H'06 can be used for
other pipes.
When PIPE8 is selected, writing to these bits is
invalid and H'06 is automatically assigned by this
module.
BUFNUMB = H'07 is used exclusively for PIPE9.
When PIPE9 is not used, H'07 can be used for
other pipes.
When PIPE9 is selected, writing to these bits is
invalid and H'07 is automatically assigned by this
module.
Modify these bits while CSSTS is 0 and PID is NAK
and before the pipe is selected by the CURPIPE bits.
Before modifying these bits after modifying the PID
bits for the selected pipe from BUF to NAK, check
that CSSTS and PBUSY are 0. However, if the PID
bits have been modified to NAK by this module,
checking PBUSY through software is not necessary.
Rev. 1.00 Nov. 14, 2007 Page 725 of 1262
REJ09B0437-0100