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UPD72012 Datasheet(PDF) 28 Page - Renesas Technology Corp |
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UPD72012 Datasheet(HTML) 28 Page - Renesas Technology Corp |
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28 / 38 page  26 Data Sheet S13918EJ3V0DS µPD72012 (3) HUB event timing Parameter Symbol Conditions MIN. TYP. MAX. Unit Time to detect downstream port connection event (wake-up HUB) 2.5 2000 µs Time to detect downstream port connection event (suspend HUB) tDCNN 2.5 12000 µs Time to detect disconnect event at downstream port (wake-up HUB) 22.5 µs Time to detect disconnect event at downstream port (suspend HUB) tDDIS 2 10000.0 µs Period to drive resume at downstream port (from control HUB only) tDRSMDN 20 ms Time from detecting downstream resume to re-broadcasting tURSM 100 µs Time to detect long K state from upstream tURLK 2.5 5.5 µs Time to detect long SE0 from upstream tURLSE0 2.5 10000 µs Period to repeat SE0 upstream tURPSE0 23 FS Bit time Period to transmit SE0 upstream after EOF1 tUDEOP Optional 2 FS Bit time |
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