upd720110a Renesas Electronics Corporation., upd720110a Datasheet - Page 18

• Manufacturer Part Number: upd720110a
• Description: Usb 2.0 Hub Controller
• Manufacturer: Renesas Electronics Corporation.

18
Hub Event Timings (Continued)
Duration of driving resume to a
downstream port (only from a controlling
hub)
Time from detecting downstream resume
to rebroadcast
Duration of driving reset to a downstream
facing port (Figure 2-16)
Time to detect a long K from upstream
Time to detect a long SE0 from upstream
Duration of repeating SE0 upstream (for
low-/full-speed repeater)
Inter-packet delay (for high-speed) of
packets traveling in same direction
Inter-packet delay (for high-speed) of
packets traveling in opposite direction
Inter-packet delay for device/root hub
response with detachable cable for high-
speed
Time of which a Chirp J or Chirp K must be
continuously detected (filtered) by hub or
device during Reset handshake
Time after end of device Chirp K by which
hub must start driving first Chirp K in the
hub’s chirp sequence
Time for which each individual Chirp J or
Chirp K in the chirp sequence is driven
downstream by hub during reset
Time before end of reset by which a hub
must end its downstream chirp sequence
Time from internal power good to device
pulling D+ beyond V
Debounce interval provided by USB
system software after attach (Figure 2-16)
Maximum duration of suspend averaging
interval
Period of idle bus before device can initiate
resume
Duration of driving resume upstream
Resume recovery time
Time to detect a reset from upstream for
non high-speed capable devices
Reset recovery time (Figure 2-16)
Parameter
IHZ
(Figure 2-16)
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
DRSMDN
URSM
DRST
URLK
URLSE0
URPSE0
HSIPDSD
HSIPDOD
HSRSPIPD1
FILT
WTDCH
DCHBIT
DCHSE0
SIGATT
ATTDB
SUSAVGI
WTRSM
DRSMUP
RSMRCY
DETRST
RSTRCY
Symbol
Data Sheet S15737EJ6V0DS
Only for a SetPortFeature
(PORT_RESET) request
Remote-wakeup is
enabled
Conditions
MIN.
100
2.5
2.5
2.5
2.5
20
10
88
40
10
8
5
1
10000
10000
MAX.
100
192
100
500
100
100
1.0
20
23
60
15
10
1
µ
PD720110A
FS Bit
times
times
times
times
Unit
ms
ms
ms
ms
ms
ms
ms
ms
ms
µ
µ
Bit
Bit
Bit
µ
µ
µ
µ
µ
s
(3/4)
s
s
s
s
s
s
s