Section 22 USB Function Module (USB)
Rev. 1.00 Mar. 12, 2008 Page 871 of 1178
REJ09B0403-0100
(4) Remote-Wakeup
Operation
When the USB bus enters the non-suspend (resume) state from the suspend state by the remote-
wakeup signal output from this function, processing should proceed as shown below.
USB cable connected
USB bus in suspend state
Cancel software
standby mode
Clear SURSF in IFR2 to 0
Check if SURSS in IFR2 is
cleared to 0
Software standby
mode ?
USB module
stopped?
Oscillation
stabilization time
has passed?
No
No
No
Yes
Yes
Yes
Start USB operating
clock oscillation
Cancel USB module stop
Remote wakeup execution
(CTLR/RSME= 1)
Return to normal state
Yes
No
Bus wakeup source
generated
Remote
wakeup enabled?
(CTLR/RWUPS = 1?)
Wait for resume
from up-stream
Resume output signal
Suspend/resume
interrupt occurs.
(IFR2/SURSF = 1)
RESUME
USB function
Application
Figure 22.8 Remote-Wakeup
Summary of Contents for H8S Family
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Page 70: ...Section 1 Overview Rev 1 00 Mar 12 2008 Page 22 of 1178 REJ09B0403 0100...
Page 108: ...Section 2 CPU Rev 1 00 Mar 12 2008 Page 60 of 1178 REJ09B0403 0100...
Page 116: ...Section 3 MCU Operating Modes Rev 1 00 Mar 12 2008 Page 68 of 1178 REJ09B0403 0100...
Page 152: ...Section 5 Interrupt Controller Rev 1 00 Mar 12 2008 Page 104 of 1178 REJ09B0403 0100...
Page 206: ...Section 6 Bus Controller BSC Rev 1 00 Mar 12 2008 Page 158 of 1178 REJ09B0403 0100...
Page 420: ...Section 9 14 Bit PWM Timer PWMX Rev 1 00 Mar 12 2008 Page 372 of 1178 REJ09B0403 0100...
Page 476: ...Section 12 Watchdog Timer WDT Rev 1 00 Mar 12 2008 Page 428 of 1178 REJ09B0403 0100...
Page 552: ...Section 14 CRC Operation Circuit CRC Rev 1 00 Mar 12 2008 Page 504 of 1178 REJ09B0403 0100...
Page 712: ...Section 18 I2 C Bus Interface IIC Rev 1 00 Mar 12 2008 Page 664 of 1178 REJ09B0403 0100...
Page 804: ...Section 19 LPC Interface LPC Rev 1 00 Mar 12 2008 Page 756 of 1178 REJ09B0403 0100...
Page 838: ...Section 20 Ethernet Controller EtherC Rev 1 00 Mar 12 2008 Page 790 of 1178 REJ09B0403 0100...
Page 964: ...Section 24 RAM Rev 1 00 Mar 12 2008 Page 916 of 1178 REJ09B0403 0100...
Page 1066: ...Section 25 Flash Memory Rev 1 00 Mar 12 2008 Page 1018 of 1178 REJ09B0403 0100...
Page 1098: ...Section 26 Boundary Scan JTAG Rev 1 00 Mar 12 2008 Page 1050 of 1178 REJ09B0403 0100...
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