LPC47M142-NC Standard Microsystems (SMSC), LPC47M142-NC Datasheet - Page 179

• Manufacturer Part Number: LPC47M142-NC
• Manufacturer: Standard Microsystems (SMSC)

Specifications of LPC47M142-NC

• Lead Free Status / RoHS Status: Not Compliant

Note 1: All voltages are measured from the local ground potential, unless otherwise specified.
Note 2: All timing use a capacitive load (CL) to ground of 50pF, unless otherwise specified.
Note 3: Full speed timings have a 1.5KΩ pull-up to a voltage of 3.0V - 3.6V on the D+ data line.
Note 4: Measured from 10% to 90% of the data signals.
Note 5: The rising and falling edges should be smoothly transitioning (monotonic).
Note 6: Timing differences between the differential data signals.
Note 7: Measured at crossover point of differential data signals.
Note 8: For a more detailed description of the Data Signaling Rate and the Frame Interval see sections 7.1.11 and
Note 9: Excluding the first transition from the idle state.
Note 10: The accuracy of the host controller’s data rate must be known and controlled to better than
Note 11: During differential signal transitions both PD+ and PD- may temporarily be less that
Note 12: The data-rate tolerance for host, hub, and full-speed functions is ±0.25%
SMSC DS – LPC47M14X
Differential Rise/Fall Time
Matching
Drive Output Impedance
DRIVER CHARACTERISTICS (Low-Speed)
Transition Time:
Rise Time
Fall Time
Differential Rise/Fall Time
Matching
DATA TRANSFER TIMINGS
Full Speed Data Rate
Frame Interval
Clock Period
Source
(including
tolerance):
To next Transition
For Paired Transitions
Source
Differential Transition to
SEO Transition
Receiver Jitter:
To next Transition
For Paired Transitions
Source SEO interval of
EOP
Receiver SEO interval of
EOP
Width
during
transition
7.1.12 in the USB Spec 1.1.
±0.05%
VIH(min). This period can be up to 14ns.
PARAMETER
of
Jitter
SEO
Jitter
differential
frequency
interval
Total
for
TPERIOD
TDRATE
TFRAME
TDEOP
TEOPR
TEOPT
TRFM
ZDRV
TRFM
TFST
TDJ1
TDJ2
TJR1
TJR2
SYM
TR
TF
Note 4,5 and FIGURE 10
Note 7 and FIGURE 15
Note 7 and FIGURE 16
Note 7 and FIGURE 15
Note 7 and FIGURE 15
Steady State Drive
Notes 8, 10, & 12
(NOTES 1, 2, 3)
CONDITIONS
Note 6, 7, & 9
Page 179
FIGURE 12
FIGURE 12
FIGURE 14
(TR/TF)
(TR/TF)
Note 10
Note 11
Note 9
Note 9
Note 8
11.9700
0.9995
-18.5
MIN
-3.5
-4.0
160
90
28
75
75
80
80
82
-2
-9
12.0300
111.11
1.0005
MAX
18.5
300
300
125
175
3.5
4.0
9.0
44
86
14
5
Rev. 03/19/2001
UNIT
Mbs
ms
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
%
%
Ω