Specification
NET2272 USB Peripheral Controller
______________________________________________________________________________
NetChip Technology, Inc., 2003
Patent Pending
335 Pioneer Way, Mountain View, California 94041
TEL (650) 526-1490
FAX (650) 526-1494
http://www.netchip.com
Rev 1.2, October 15, 2003
88
10.4 AC Specifications
10.4.1 USB Full Speed Port AC Specifications
Operating Conditions: VDDC: 2.2-2.6V, VDDIO: 3.2-3.5V, TA = 0°C to 70°C
All typical values are at VDDC = 2.5V, VDDIO = 3.3V and TA = 25°C
Symbol
Parameter
Conditions
Waveform
Min
Typ
Max
Unit
TFR
Rise & Fall Times
CL = 50 pF,
Figure 8-1
4
20
ns
TFF
Note 16
4
20
TFRFM
Rise/Fall time matching
(TFR/ TFF), Note
10
Figure 8-1
90
110
%
ZDRV
Driver Output Resistance
Steady State Drive
10
15
Ω
TFDRATHS
Full-speed Data Rate
11.994
12
12.006
Mbs
TDJ1
Source Differential Driver Jitter to
Next Transition
Notes 7,8,10,12
Figure 8-2
-2
0
2
ns
TDJ2
Source Differential Driver Jitter
for Paired Transitions
Notes 7,8,10,12
Figure 8-2
-1
0
1
ns
TFDEOP
Source Jitter for Differential
Transition to SE0 Transition
Note 8, 11
Figure 8-3
-2
0
5
ns
TJR1
Receiver Data Jitter Tolerance to
Next Transition
Note 8
Figure 8-4
-18.5
0
18.5
ns
TJR2
Receiver Data Jitter Tolerance for
Paired Transitions
Note 8
Figure 8-4
-9
0
9
ns
TEOPT
Source SE0 interval of EOP
Figure 8-3
160
167
175
ns
TFEOPR
Receiver SE0 interval of EOP
Note 13
Figure 8-3
82
ns
TFST
Width of SE0 interval during
differential transition
14
ns
10.4.2 USB High Speed Port AC Specifications
Operating Conditions: VDDC: 2.2-2.6V, VDDIO: 3.2-3.5V, TA = 0°C to 70°C
All typical values are at VDDC = 2.5V, VDDIO = 3.3V and TA = 25°C
Symbol
Parameter
Conditions
Waveform
Min
Typ
Max
Unit
THSR
Rise & Fall Times
Note 16
500
ps
THSF
500
ZDRV
Driver Output Resistance
Steady State Drive
10
15
Ω
THSDRV
High-speed Data Rate
479.760
480
480.240
Mbs
Data source jitter
Specified by eye
pattern templates
Receiver jitter tolerance
Specified by eye
pattern templates
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