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1. Functions
1.4.10.2.3.2
time
HostState[2:0]
SUSPEND
DetectRmtWkup
XcvrSelect[1:0]
FS
TermSelect
OpMode[1:0]
Power Down
PortSpeed[1:0]
FS
LineState[1:0]
'J' State
DP / DM
'J' State
FS Mode
Device is suspended
(FS Mode)
Timing
Parameter
T0
The device starts sending the remote wakeup signal (K).
T1
The remote wakeup signal (K) is detected.
Remote wakeup detection status is issued. (H/W)
T2
The host state change execute (H_NegoControl_0.AutoMode) is
(reference)
set to "GoRESUME." (F/W)
T3
The host starts sending the resume signal ("K"). (H/W)
(reference)
Note: Brackets {} indicate names defined in the USB 2.0 standards.
100
If FS Device is Connected
The procedures following the connection of an FS device are the same as for an HS
device.
For detailed information on the actions taken, refer to "1.4.10.2.3.1 If HS Device is
Connected."
T2
T0
T1
'K' State
'K' State
Upstream Resume
Fig. 1-44 Remote wakeup timing (FS mode)
Table 1-37 Remote wakeup timing values (FS mode)
Description
T3
RESUME
Disable BS and NRZI
Downstream Resume
EPSON
S2R72V18 Technical Manual (Rev.1.00)
Value
0 (reference)
T0 + 2.5 µs < T1 {T
}
URLK
T2 < T1 + 900 µs
T3 < T0 + 1 ms {T
}
URSM
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