r4f2456 Renesas Electronics Corporation., r4f2456 Datasheet - Page 989

• Manufacturer Part Number: r4f2456
• Description: 16-bit Single-chip Microcomputer H8s Family / H8s/2400 Series
• Manufacturer: Renesas Electronics Corporation.

USB bus in suspend state
Resume signal output
Suspend/resume
interrupt occurs.
(IFR0/SURSF = 1)
USB cable connected
48-MHz USB clock
supply started
USB function
USBININ2 or
USBININ3
Figure 16.9 Remote-Wakeup
Remote wakeup execution.
Check if SURSS in IFR0 is
cleared to 0.
Clear SURSF in IFR0 to 0.
Return to normal state.
(CTLR/RWUPS = 1?)
Bus wakeup source
(CTLR/RSME= 1)
wakeup enabled?
Software standby
Application
generated
Remote
mode ?
Rev. 1.00 Sep. 19, 2008 Page 959 of 1342
N
Section 16 USB Function Module (USB)
Y
Cancel 48-MHz USB clock module
stop.
(Clear MSTP17 in EXMSTPCRL to 0)
Clear SSRSME in IER0 to 0.
Wait for resume
from up-stream
Set SURSFE in IER0 to 1.
N
Cancel software
standby mode
stabilization time
has passed?
Oscillation
Y
REJ09B0467-0100
Y
N