Data Sheet

FSC-BT956B Datasheet
Shenzhen Feasycom Technology Co., Ltd www.feasycom.com
-19-
Figure 8: Power-up Ramp Condition
5.5 USB PHY Specifications
5.5.1 USB DC Electrical Characteristics
Table 8: USB DC Electrical Characteristics
Parameter
Min
Type
Max
Unit
V
IH
- Input high(driven)
2.0
-
-
V
V
IL
- Input low
-
-
0.8
V
V
DI
- Differential input sensitivity(IUSB_DP-USB_DM)
0.2
-
-
V
V
CM
- Differential common-mode rang
(Includes V
DI
range)
0.8
-
2.5
V
VSE- Single-ended receiver threshold
0.8
-
2.0
V
Receiver hysteresis
-
400
-
mV
V
OL
- Output low (driven)
0
-
0.3
V
V
OH
- Output high (driven)
2.8
-
3.6
V
V
CRS
- Output signal cross voltage
1.3
-
2.0
V
R
PU
- Pull-up resistor
1.425
-
1.575
KΩ
V
TRM
- Pull-down resistor
14.25
-
15.75
KΩ
Z
DRV
- Termination Voltage for upstream port pull up (R
PU
)
3.0
-
3.6
V
C
IN
- Driver output resistance (Steady state drive* )
28
-
49.5
Ω
V
IH
- Transceiver capacitance (Pin to V
SS
)
-
-
20
pF
Note: Driver output resistance does not include series resistor resistance.
5.5.2 USB Full-Speed Driver Electrical Characteristics
Table 9: USB full-Speed Driver Electrical Characteristics
Parameter
Min
Type
Max
Unit
T
FR
- Rising time (CL=5pF)
500
-
-
nS
T
FF
- Falling time (CL=5pF)
500
-
-
nS
T
FRFF
- Rising and falling time matching (T
FRFF
= T
FR
/ T
FF
)
90
-
111
%