97CFDC Datasheet, PDF (15/20 Pages) SMSC Corporation – USB FLOPPY DISK CONTROLLER

USB PARAMETERS
The following tables and diagrams were obtained from the USB specification
USB DC PARAMETERS
1.0
0.8
0.6
0.4
0.2
0.0
0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 2.2 2.4 2.6 2.8 3.0 3.2
Common Mode Input Voltage (volts)
FIGURE 6 - DIFFERENTIAL INPUT SENSITIVITY OVER ENTIRE COMMON MODE RANGE
Table 6 - DC Electrical Characteristics
CONDITIONS
PARAMETER
SYMBOL (NOTE 1, 2)
MIN TYP
Supply Voltage
Powered (Host or Hub) Port VBUS
4.4
Supply Current
Function
ICC
Note 4
Un-configured Function (in) ICCINIT
Note 5
Suspend Device
ICCS
Leakage Current
Hi-Z State Data Line
Leakage
ILO
0 V < VIN < 3.3 -10
V
Input Levels
Differential Input Sensitivity
VDI
|(D+) - (D-)|,
0.2
and FIGURE 6
Differential Common Mode
VCM
Includes VDI
0.8
Range
range
Single Ended Receiver
VSE
0.8
Threshold
Output Levels
Static Output Low
VOL
RL of 1.5 KΩ to
3.6 V
Static Output High
VOH
RL of 15 KΩ to
2.8
GND
Capacitance
Transceiver Capacitance
CIN
Pin to GND
Terminals
Bus Pull-up Resistor on
Root Port
RPU (1.5 KΩ +/- 5%) 1.425
Bus Pull-down Resistor on
Downstream Port
RPD
(15 KΩ +/- 5%) 14.25
MAX
5.25
100
100
100
10
2.5
2.0
0.3 (3)
3.6 (3)
20
1.575
15.75
UNIT
V
mA
uA
uA
uA
V
V
V
V
V
pF
kΩ
kΩ
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: This is relative to VUSBIN.
Note 4: This is dependent on block configuration set by software.
Note 5: When the internal ring oscillator and waiting for first setup packet.
SMSC DS – USB97CFDC
Page 15
Rev. 12/15/2000