SMSC USB3280 manual 14

Hi-Speed USB Device PHY with UTMI Interface

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	VDIFS	V(DP) - V(DM)	0.2			V
Sensitivity
Differential Receiver	VCMFS		0.8		2.5	V
Common-Mode Voltage
Single-Ended Receiver Low	VILSE				0.8	V
Level Input Voltage
Single-Ended Receiver High	VIHSE		2.0			V
Level Input Voltage
Single-Ended Receiver	VHYSSE		0.050		0.150	V
Hysteresis
Output Levels
Low Level Output Voltage	VFSOL	Pull-up resistor on DP;			0.3	V
		RL = 1.5kΩ to VDD3.3
High Level Output Voltage	VFSOH	Pull-down resistor on DP,	2.8		3.6	V
		DM;
		RL = 15kΩ to GND
Termination
Driver Output Impedance for	ZHSDRV	Steady state drive	40.5	45	49.5	Ω
HS and FS		(See Figure 6.1)
Input Impedance	ZINP	TX, RPU disabled	10			MΩ
Pull-up Resistor Impedance	ZPU	Bus Idle	0.900	1.24	1.575	kΩ
Pull-up Resistor Impedance	ZPURX	Device Receiving	1.425	2.26	3.09	kΩ
Termination Voltage For Pull-	VTERM		3.0		3.6	V
up
Resistor On Pin DP
HS FUNCTIONALITY
Input levels
HS Differential Input Sensitivity	VDIHS	V(DP) - V(DM)	100			mV
HS Data Signaling Common	VCMHS		-50		500	mV
Mode Voltage Range
HS Squelch Detection	VHSSQ	Squelch Threshold			100	mV
Threshold (Differential)
		Unsquelch Threshold	150			mV
Output Levels
High Speed Low Level	VHSOL	45Ω load	-10		10	mV
Output Voltage (DP/DM
referenced to GND)

Revision 1.5 (11-15-07)	14	SMSC USB3280
	DATASHEET