20H04 Datasheet, PDF (18/38 Pages) SMSC Corporation – 4-PORT USB2.0 HUB CONTROLLER

4-Port USB2.0 Hub Controller
Datasheet
Table 6.4 - DC Electrical Characteristics: Analog I/O Pins (DP/DM)
(VDD1.8 =1.74 to 2.0V; VDD3.3 =3.0 to 3.6V; VSS = 0V; TA = 0 ^oC to +70^oC; unless otherwise specified.)
PARAMETER
FS FUNCTIONALITY
Input levels
Differential Receiver Input
Sensitivity
Differential Receiver
Common-Mode Voltage
Single-Ended Receiver Low
Level Input Voltage
Single-Ended Receiver High
Level Input Voltage
Output Levels
Low Level Output Voltage
SYMBOL
V_DIFS
V_CMFS
V_ILSE
V_IHSE
V_FSOL
High Level Output Voltage
V_FSOH
Termination
Driver Output Impedance for
HS and FS
Pull-up Resistor Impedance
Termination Voltage For Pull-up
Resistor On Pin DP
HS FUNCTIONALITY
Input levels
HS Differential Input Sensitivity
HS Data Signaling Common
Mode Voltage Range
HS Squelch Detection
Threshold (Differential)
Z_HSDRV
Z_PU
V_TERM
V_DIHS
V_CMHS
V_HSSQ
CONDITIONS
| VI(DP) - VI(DM) |
Pull-up resistor on DP;
R_L = 1.5kΩ to V_DD3.3
Pull-down resistor on DP, DM;
R_L = 15kΩ to GND
Steady state drive
| VI(DP) - VI(DM) |
Squelch Threshold
Unsquelch Threshold
MIN
0.2
0.8
2.0
2.8
40.5
1.425
3.0
100
-50
150
TYP
45
MAX UNITS
V
2.5
V
0.8
V
V
0.3
V
3.6
V
49.5 Ω
1.575 KΩ
3.6
V
mV
500 mV
100 mV
mV
Output Levels
High Speed Low Level
Output Voltage (DP/DM
V_HSOL
When driven into a precision 45Ω -10
load
10 mV
referenced to GND)
High Speed High Level
Output Voltage (DP/DM
V_HSOH
When driven into a precision 45Ω 360
load
440 mV
referenced to GND)
High Speed IDLE Level
Output Voltage (DP/DM
V_OLHS
When driven into a precision 45Ω -10
load
10 mV
referenced to GND)
Chirp-J Output Voltage
(Differential)
V_CHIRPJ HS termination resistor disabled, 700
pull-up resistor connected.
1100 mV
Chirp-K Output Voltage
(Differential)
V_CHIRPK HS termination resistor disabled, -900
pull-up resistor connected.
-500 mV
Leakage Current
OFF-State Leakage Current
I_LZ
Port Capacitance
± 1 uA
Transceiver Input Capacitance
C_IN
Pin to GND
5
10
pF
6.1 Dynamic Characteristics: Analog I/O Pins (DP/DM)
ƒ Compliant with USB2.0 Specification. For complete specifications consult the Universal Serial Bus
Specification Revision 2.0.
Revision 1.63 (10-14-04)
Page 18
DATASHEET
SMSC USB20H04