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Datasheet – SMSC USB3290 User Manual

Page 14

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Small Footprint Hi-Speed USB 2.0 Device PHY with UTMI Interface

Datasheet

Revision 1.5 (11-02-07)

14

SMSC USB3290

DATASHEET

Table 6.3 DC Electrical Characteristics: Analog I/O Pins (DP/DM) (

Note 6.3

)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP MAX

UNITS

FS FUNCTIONALITY

Input levels

Differential Receiver Input
Sensitivity

V

DIFS

| V(DP) - V(DM) |

0.2

V

Differential Receiver
Common-Mode Voltage

V

CMFS

0.8

2.5

V

Single-Ended Receiver Low
Level Input Voltage

V

ILSE

0.8

V

Single-Ended Receiver High
Level Input Voltage

V

IHSE

2.0

V

Single-Ended Receiver
Hysteresis

V

HYSSE

0.050

0.150

V

Output Levels

Low Level Output Voltage

V

FSOL

Pull-up resistor on DP;
R

L

= 1.5k

Ω to V

DD3.3

0.3

V

High Level Output Voltage

V

FSOH

Pull-down resistor on DP,
DM;
R

L

= 15k

Ω to GND

2.8

3.6

V

Termination

Driver Output Impedance for
HS and FS

Z

HSDRV

Steady state drive
(See

Figure 6.1

)

40.5

45

49.5

Ω

Input Impedance

Z

INP

TX, RPU disabled

10

M

Ω

Pull-up Resistor Impedance

Z

PU

Bus Idle

0.900

1.24

1.575

k

Pull-up Resistor Impedance

Z

PURX

Device Receiving

1.425

2.26

3.09

k

Termination Voltage For Pull-
up
Resistor On Pin DP

V

TERM

3.0

3.6

V

HS FUNCTIONALITY

Input levels

HS Differential Input Sensitivity

V

DIHS

| V(DP) - V(DM) |

100

mV

HS Data Signaling Common
Mode Voltage Range

V

CMHS

-50

500

mV

HS Squelch Detection
Threshold (Differential)

V

HSSQ

Squelch Threshold

100

mV

Unsquelch Threshold

150

mV

Output Levels

High Speed Low Level
Output Voltage (DP/DM
referenced to GND)

V

HSOL

45

Ω load

-10

10

mV