UPD720113 datasheet(23/34 Pages) RENESAS

23 / 34 page

Data Sheet S16618EJ3V0DS

µPD720113

(3/4)

Parameter

Symbol

Conditions

MIN.

MAX.

Unit

Hub Event Timings

Time to detect a downstream facing port

connect event (Figure 2-19):

Awake hub

Suspended hub

tDCNN

2.5

2000

12000

µs

Time to detect a disconnect event at a

hub’s downstream facing port (Figure 2-18)

tDDIS

2.0

2.5

µs

Duration of driving resume to a

downstream port (only from a controlling

hub)

tDRSMDN

Time from detecting downstream resume

to rebroadcast

tURSM

1.0

Duration of driving reset to a downstream

facing port (Figure 2-20)

tDRST

Only for a SetPortFeature

(PORT_RESET) request

Time to detect a long K from upstream

tURLK

2.5

100

µs

Time to detect a long SE0 from upstream

tURLSE0

2.5

10000

µs

Duration of repeating SE0 upstream (for

low-/full-speed repeater)

tURPSE0

FS Bit

times

Inter-packet delay (for high-speed) of

packets traveling in same direction

tHSIPDSD

Bit

times

Inter-packet delay (for high-speed) of

packets traveling in opposite direction

tHSIPDOD

Bit

times

Inter-packet delay for device/root hub

response with detachable cable for high-

speed

tHSRSPIPD1

192

Bit

times

Time of which a Chirp J or Chirp K must be

continuously detected (filtered) by hub or

device during Reset handshake

tFILT

2.5

µs

Time after end of device Chirp K by which

hub must start driving first Chirp K in the

hub’s chirp sequence

tWTDCH

100

µs

Time for which each individual Chirp J or

Chirp K in the chirp sequence is driven

downstream by hub during reset

tDCHBIT

µs

Time before end of reset by which a hub

must end its downstream chirp sequence

tDCHSE0

100

500

µs

Time from internal power good to device

pulling D

+ beyond VIHZ (Figure 2-20)

tSIGATT

100

Debounce interval provided by USB

system software after attach (Figure 2-20)

tATTDB

100

Maximum duration of suspend averaging

interval

tSUSAVGI

Period of idle bus before device can initiate

resume

tWTRSM

Duration of driving resume upstream

tDRSMUP

UPD720113 Datasheet(PDF) 23 Page - Renesas Technology Corp

UPD720113 Datasheet(HTML) 23 Page - Renesas Technology Corp

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34

Datasheet Download

Link URL