SH7205 Datasheet, PDF (1267/1904 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7200 Series

Section 24 USB 2.0 Host/Function Module (USB)
(a) When IITV = 0
Counting of the interval is started from the first (micro) frame after the PID bit setting of
the selected pipe is changed to BUF.
S
(Micro)frame
O
F
PID bit setting
Expectation for token reception
(0: Expect to receive
-: Expect not to receive)
Start of interval
counting
NAK
-
S
O
F
BUF
-
SODSOD
OUAOUA
FTTFTT
A
A
0
0
BUF
0
BUF
0
↑
Figure 24.3 (Micro) Frames and Expectation for Token Reception when IITV = 0
(b) When Other than IITV = 0
Counting of the interval is started on completion of the first normal reception of data
packet after the PID bit setting of the selected pipe is changed to BUF.
S
(Micro)frame
O
F
PID bit setting
Expectation for token reception
(0: Expect to receive
-: Expect not to receive)
Start of interval
counting
NAK
-
S
O
F
BUF
-
SODS
OUAO
FTTF
A
0
BUF
0
BUF
-
↑
SODS
OUAO
FTTF
A
0
BUF
0
BUF
-
SOD
OUA
FTT
A
0
BUF
0
Figure 24.4 (Micro) Frames and Expectation for Token Reception when IITV = 1
Rev. 1.00 Mar. 25, 2008 Page 1235 of 1868
REJ09B0372-0100