IDTTM

Progammable Timing Control HubTM for Next Gen P4TM Processor

701J—01/25/10

ICS952601

Programmable Timing Control HubTM for Next Gen P4TM Processor

6

Electrical Characteristics - CPU & SRC 0.7V Current Mode Differential Pair

TA = 0 - 70°C; VDD = 3.3 V +/-5%; CL =2pF

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

NOTES

Current Source Output

Impedance

Zo

1

VO = Vx

3000

Ω

1

Voltage High

VHigh

660

770

850

1

Voltage Low

VLow

-150

5

150

1

Max Voltage

Vovs

756

1150

1

Min Voltage

Vuds

-300

-7

1

Crossing Voltage (abs)

Vcross(abs)

250

350

550

mV

1

Crossing Voltage (var)

d-Vcross

Variation of crossing over all

edges

12

140

mV

1

Long Accuracy

ppm

see Tperiod min-max values

-300

300

ppm

1,2

200MHz nominal

4.9985

5.0000

5.0015

ns

2

200MHz spread

4.9985

5.0266

ns

2

166.66MHz nominal

5.9982

6.0000

6.0018

ns

2

166.66MHz spread

5.9982

6.0320

ns

2

133.33MHz nominal

7.4978

7.5000

7.5023

ns

2

133.33MHz spread

7.4978

5.4000

ns

2

100.00MHz nominal

9.9970

10.0000 10.0030

ns

2

100.00MHz spread

9.9970

10.0533

ns

2

200MHz nominal

4.8735

ns

1,2

166.66MHz nominal/spread

5.8732

ns

1,2

133.33MHz nominal/spread

7.3728

ns

1,2

100.00MHz nominal/spread

9.8720

ns

1,2

Rise Time

tr

VOL = 0.175V, VOH = 0.525V

175

332

700

ps

1

Fall Time

tf

VOH = 0.525V VOL = 0.175V

175

344

700

ps

1

Rise Time Variation

d-tr

30

125

ps

1

Fall Time Variation

d-tf

30

125

ps

1

Duty Cycle

dt3

Measurement from differential

wavefrom

45

49

55

%

1

Skew

tsk3

VT = 50%

8

100

ps

1

Jitter, Cycle to cycle

tjcyc-cyc

Measurement from differential

wavefrom

37

125

ps

1

1Guaranteed by design, not 100% tested in production.

SRC clock outputs run at only 100MHz or 200MHz, specs for 133.33 and 166.66 do not apply to SRC clock pair.

2 All Long Term Accuracy and Clock Period specifications are guaranteed with the assumption that Ref output is at

14.31818MHz

Tperiod

Average period

Absolute min period

Tabsmin

Statistical measurement on

single ended signal using

oscilloscope math function.

mV

Measurement on single ended

signal using absolute value.

mV