Freescale Semiconductor MC68HC08KH12 manual USB High Speed Source Electrical Characteristics, 254

17.11 USB High Speed Source Electrical Characteristics

Characteristic	Symbol	Conditions	Min	Typ	Max	Unit
		(Notes 1,2,3)
Transition time:		Notes 4,5,8
Rise Time	TR	CL=50pF	4		20	ns
Fall Time	TF	CL=50pF	4		20	ns
Rise/Fall Time Matching	TRFM	TR/TF	90		110	%
Output Signal Crossover	VCRS		1.3		2.0	V
Voltage
High Speed Data Rate	TDRATE	12Mbs± 0.25%	11.97		12.03	Mbs
						ns
Frame Interval	TFRAME	1.0ms± 0.05%	0.9995		1.0005	ms
Source Differential Driver Jitter		CL =50pF
To Next Transition	TDJ1		–3.5		3.5	ns
		Notes 6, 7
For Paired Transitions	TDJ1		–4.0		4.0	ns
Source EOP Width	TEOPT	Note 7	160		175	ns
Differential to EOP Transition	TDEOP	Note 7	–2		5	ns
Skew
Receive Data Jitter Tolerance		CL =50pF
To Next Transition	TJR1		–18.5		18.5	ns
		Notes 6, 7
For Paired Transitions	TJR2		–9		9	ns
Receiver EOP Width
Must Reject as EOP	TEOPR1	Note 7	40			ns
Must Accept	TEOPR2		82			ns

NOTES:

1.All voltages measured from local ground, unless otherwise specified.

2.All timings use a capacitive load of 50pF, unless otherwise specified.

3.High speed timings have a 1.5kΩ pull-up to 2.8V on the D+ data line.

4.Measured from 10% to 90% of the data signal.

5.The rising and falling edges should be smoothly transitioning (monotonic).

6.Timing differences between the differential data signals.

7.Measured at crossover point of differential data signals.

8.Capacitive loading includes 50pF of tester capacitance.

Advance Information	MC68HC(7)08KH12 — Rev. 1.1
254	Freescale Semiconductor