SC2200 NSC [National Semiconductor], SC2200 Datasheet - Page 408

• Manufacturer Part Number: SC2200
• Description: Thin Client On a Chip
• Manufacturer: NSC [National Semiconductor]

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Electrical Specifications
8.3.9
Symbol
Full Speed Source
t
t
t
t
t
t
t
t
t
t
t
t
t
Full Speed Receiver EOP Width
t
t
Low Speed Source
t
t
t
t
t
t
t
t
USB_R1
USB_F1
USB_FRFM
USB_FSDR
USB_FSF
period_F
USB DOR
USB_DJ11
USB_DJ12
USB_SE1
USB_DE1
USB_RJ11
USB_RJ12
USB_RE11
USB_RE12
USB_R2
USB_F2
USB_LRFM
USB_LSDR
PERIOD_L
USB_DJD21
USB_DJD22
USB_DJU21
Universal Serial Bus (USB) Interface
Parameter
DPOS_Port1,2,3, DNEG_Port1,2,3
Driver Rise Time
DPOS_Port1,2,3, DNEG_Port1,2,3
Driver Fall Time
Rise/Fall time matching
Full-speed data rate
Full-speed frame interval
Full-speed period between data bits
Driver-output resistance
Source differential driver jitter
consecutive transition
Source differential driver jitter
paired transitions
Source EOP width
Differential to EOP transition skew
Receiver data jitter tolerance
consecutive transition
Receiver data jitter tolerance
paired transitions
Must reject as EOP
Must accept as EOP
DPOS_Port1,2,3, DNEG_Port1,2,3
Driver Rise Time
DPOS_Port1,2,3, DNEG_Port1,2,3
Driver Fall Time
Low-speed Rise/Fall time matching
Low-speed data rate
Low-speed period
Source differential driver jitter
consecutive transactions
Source differential driver jitter
paired transactions
Source differential driver jitter
consecutive transaction
1
1, 6
,
2
4, 5
5
4
5
(Continued)
Table 8-28. USB Timing Parameters
4
4
3, 4
3, 4
4
4
4
for
for
for
for
for
for
for
4, 5
0.9995
1.4775
11.97
–18.5
0.657
83.1
–3.5
–4.0
Min
160
–75
–45
–95
90
28
–2
–9
82
75
75
80
4
4
408
1.0005
1.5225
12.03
0.677
300
300
Max
83.5
18.5
110
175
120
3.5
4.0
20
20
43
40
75
45
95
5
9
6
6
Mbps
Mbps
Unit
ms
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
%
W
%
s
Figure
8-37
8-37
8-38
8-38
8-38
8-39
8-40
8-40
8-39
8-39
8-37
8-37
8-38
8-38
Comments
(Monotonic) from 10% to
90% of the D_Port lines
(Monotonic) from 90% to
10% of the D_Port lines
Average bit rate 12 Mbps
1.0 ms
Average bit rate 12 Mbps
Steady-state drive
(Monotonic) from 10% to
90% of the D_Port lines
(Monotonic) from 90% to
10% of the D_Port lines
Average bit rate 1.5 Mbps
at 1.5 Mbps
Host (downstream)
Host (downstream)
Function (downstream)
0.25%
1.5%
0.05%
Revision 3.0