HD6417727BP160CV Datasheet, PDF (764/1098 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperH™ RISC engine Family/ SH7700 Series

Section 23 USB Function Controller
23.6.3 Control Transfer
Control transfer consists of three stages of setup, data (that may not be included), and status
(figure 23.4). The data stage consists of multiple bus transactions. The operating flowchart of
each stage is shown below.
Control-in
Setup stage
SETUP(0)
DATA0
Control-out
SETUP(0)
DATA0
No data
SETUP(0)
DATA0
IN(1)
DATA1
OUT(1)
DATA1
Data stage
IN(0)
DATA0
...
IN(0/1)
DATA0/1
OUT(0)
DATA0
. . . OUT(0/1)
DATA0/1
Status stage
OUT(1)
DATA1
IN(1)
DATA1
IN(1)
DATA1
Figure 23.4 Transfer Stage for Control Transfer
Rev.6.00 Mar. 27, 2009 Page 706 of 1036
REJ09B0254-0600