AT43USB353M_04 Datasheet, PDF (90/95 Pages) ATMEL Corporation – Low Cost Full-speed USB Microcontroller with Embedded Hub, ADC and PWM

Table 35. Hub Timings, Full-speed Operation
Symbol
Parameter
THDD2 Hub Differential Data Delay without cable
THDJ1
THDJ2
TFSOP
TFEOPD
TFHESK
Hub Diff Driver Jitter
To Next Transition
For Paired Transitions
Data Bit Width Distortion after SOP
Hub EOP Delay Relative to THDD
Hub EOP Output Width Skew
Condition
Min
Max
Unit
44
ns
-3
3
ns
-1
1
-5
5
ns
0
15
ns
-15
15
ns
Table 36. Hub Timings, Low-speed Operation
Symbol Parameter
TLHDD Hub Differential Data Delay
TLHDJ1
TLHDJ2
TLUHJ1
TLUHJ2
Downstr Hub Diff Driver Jitter to Next Transition, Downst
for Paired Transitions,
Downst to Next Transition,
Upstr for Paired Transitions,
Upstr
TSOP
Data Bit Width Distortion after SOP
TLEOPD Hub EOP Delay Relative to THDD
TLHESK Hub EOP Output Width Skew
Condition
Min Max Unit
300
ns
-45
45
-15
15
ns
-45
45
-45
45
-60
60
ns
0
200
ns
-300 300
ns
Table 37. Hub Event Timings
Symbol
Parameter
TDCNN Time to detect a downstream port connect event
TDDIS
Time to detect a disconnect event on downstream port
Awake Hub
Suspended Hub
TURSM Time from detecting downstream resume to rebroadcast
TDRST Duration of driving reset to a downstream device
TDSPDEV
TURLK
TURLSEO
Time to evaluate device speed after reset
Time to detect a long K from upstream
Time to detect a long SEO from upstream
TURPSEO Duration of repeating SEO upstream
TUDEOP Duration of sending SEO upstream after EOF1
Condition
Only for a SetPortFeature
(PORT_RESET) request
Min
2.5
2.5
2.5
10
2.5
2.5
2.5
Max
2000
Unit
µs
2000
µs
12000
100
µs
20
µs
1000
µs
5.5
µs
5.5
µs
23
FS
bits
2
FS
bits
90 AT43USB353M
3307B–USB–4/04