Epson S2R72V18 Technical Manual page 137

1. Functions
Timing
Parameter
T0 Sets H_NegoControl_0.AutoMode to "GoRESET." (F/W)
Enables the device chirp detection function. (H/W)
T1 The device starts the chirp.
T2 The device ends the chirp.
Sets the port speed to HS.
Disables the device chirp detection function.
Issues device chirp normal detection status notification
(DetectDevChirpOK). (H/W)
T3 The host outputs the first chirp ("Chirp K"). (H/W)
T4 The host starts output of "Chirp J" switching from "Chirp K."
(H/W)
T5 The host starts output of "Chirp K" switching from "Chirp J."
(H/W)
T6 The device detects the host chirp.
T7 The device switches to HS mode.
T8 The host ends the chirp. (H/W)
T9 Reset is ended. Issues reset completion status notification
(ResetCmp). (H/W)
T10 Sets H_NegoControl_0.AutoMode to "GoOPERATIONAL."
(reference) (F/W)
T11 Sends the first SOF. (H/W)
(reference)
Note: Brackets {} indicate names defined in the USB 2.0 standards.
120
Table 1-47 Reset timing values (HS mode)
Description
EPSON
Value
0 (reference)
T0 < T1 < T0 + 6.0 ms
T1 + 1.0 ms {T
UCH
T0 + 7.0 ms {T
UCHEND
T2 < T3 < T2 + 100 µs {T
T3 + 40 µs {T
DCHBIT
T3 + 60 µs {T
DCHBIT
T4 + 40 µs {T
DCHBIT
T4 + 60 µs {T
DCHBIT
T6
T6 < T7 < T6 + 500 µs
T3 + 50 ms {T
DRSTR
T8 < T9 < T8 + 150 µs
T10 < T9 + 200 µs
T10 + 120 µs < T11 < T10 + 130 µs
T8 + 100 µs {T
DCHSE0
T8 + 500 µs {T
DCHSE0
S2R72V18 Technical Manual (Rev.1.00)
} < T2 <
}
}
WTDCH
} < T4 <
}
} < T5 <
}
} < T8
} < T11 <
}