Digi NS9750 User Manual
Page 815
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7 9 1
T i m i n g
Notes:
1
|(usb_dp) – (usb_dm)|
2
Includes V
DI
range.
Outputs
All electrical outputs are 3.3V interface.
USB DC electrical outputs
Notes:
1
Measured with R
L
of 1.425k ohm to 3.6V.
2
Measured with R
L
of 14.25k ohm to GND.
3
Excluding the first transition from the idle state.
V
IL
Input low level
0.8
V
V
DI
Differential input sensitivity
0.2
V
1
V
CM
Differential common mode range
0.8
2.5
V
2
Symbol
Parameter
Min
Max
Units
Notes
Table 464: USB DC electrical inputs
Sym
Parameter
Value
Unit
V
OH
High-level output voltage (LVTTL)
Min
V
DDA
-0.6
V
V
OL
Low-level output voltage (LVTTL)
Max
0.4
V
V
OH
PCI high-level output voltage
Min
0.9V
DDA
V
V
OL
PCI low-level output voltage
Max
0.1V
DDA
V
Table 465: DC electrical outputs
Symbol
Parameter
Min
Max
Units
Notes
V
OL
Output low level
0.0
0.3
V
1
V
OH
Output high level
2.8
3.6
V
2
V
CRS
Output signal crossover voltage
1.3
2.0
V
3
Table 466: USB DC electrical outputs