9ZML1232BKLF Datasheet 9ZML1232BKLF, 9ZML1232BKLFT | P10-P12

9ZML1232

2:12 LOW POWER DIFFERENTIAL Z-BUFFER MUX FOR PCIE AND QPI/UPI

IDT®

2:12 LOW POWER DIFFERENTIAL Z-BUFFER MUX FOR PCIE AND QPI/UPI 10

9ZML1232 REV E 112015

Clock Periods–Differential Outputs with Spread Spectrum Disabled

Clock Periods–Differential Outputs with Spread Spectrum Enabled

1 Clock 1us 0.1s 0.1s 0.1s 1us 1 Clock

-c2c jitter

AbsPer

Min

-SSC

Short-Term

Average

Min

- ppm

Long-Term

Average

Min

0 ppm

Period

Nominal

+ ppm

Long-Term

Average

Max

+SSC

Short-Term

Average

Max

+c2c jitter

AbsPer

Max

DIF 100.00 9.94900 9.99900 10.00000 10.00100 10.05100 ns 1,2,3

Measurement Window

Units NotesSSC OFF

Center

Freq.

MHz

1 Clock 1us 0.1s 0.1s 0.1s 1us 1 Clock

-c2c jitter

AbsPer

Min

-SSC

Short-Term

Average

Min

- ppm

Long-Term

Average

Min

0 ppm

Period

Nominal

+ ppm

Long-Term

Average

Max

+SSC

Short-Term

Average

Max

+c2c jitter

AbsPer

Max

DIF 99.75 9.94906 9.99906 10.02406 10.02506 10.02607 10.05107 10.10107 ns 1,2,3

Notes:

Guaranteed by design and characterization, not 100% tested in production.

Driven by SRC output of main clock, 100 MHz PLL Mode or Bypass mode

Driven by CPU output of main clock, 133 MHz PLL Mode or Bypass mode

All Long Term Accuracy specifications are guaranteed with the assumption that the input clock complies with CK420BQ accuracy

requirements (+/-100ppm). The 9ZML1232 itself does not contribute to ppm error.

Notes

Measurement Window

UnitsSSC ON

Center

Freq.

MHz

9ZML1232

2:12 LOW POWER DIFFERENTIAL Z-BUFFER MUX FOR PCIE AND QPI/UPI

IDT®

2:12 LOW POWER DIFFERENTIAL Z-BUFFER MUX FOR PCIE AND QPI/UPI 11

9ZML1232 REV E 112015

Common Recommendations for Differential Routing Dimension or Value Unit Figure

L1 length, route as non-coupled 50ohm trace 0.5 max inch 1

L2 length, route as non-coupled 50ohm trace 0.2 max inch 1

L3 length, route as non-coupled 50ohm trace 0.2 max inch 1

Rs (100 ohm differential traces) 33 ohm 1

Rs (85 ohm differential traces) 27 ohm 1

Down Device Differential Routing

L4 length, route as coupled microstrip 100ohm differential trace 2 min to 16 max inch 1

L4 length, route as coupled stripline 100ohm differential trace 1.8 min to 14.4 max inch 1

Differential Routing to PCI Express Connector

L4 length, route as coupled microstrip 100ohm differential trace 0.25 to 14 max inch 2

L4 length, route as coupled stripline 100ohm differential trace 0.225 min to 12.6 max inch 2

DIF Reference Clock

LP-HCSL

Output

L1'

L2'

L4'

PCI Express

Down Device

REF_CLK Input

Figure 1: Down Device Routing

LP-HCSL

Output

L1'

L2'

L4'

PCI Express

Add-in Board

REF_CLK Input

Figure 2: PCI Express Connector Routing

9ZML1232

2:12 LOW POWER DIFFERENTIAL Z-BUFFER MUX FOR PCIE AND QPI/UPI

IDT®

2:12 LOW POWER DIFFERENTIAL Z-BUFFER MUX FOR PCIE AND QPI/UPI 12

9ZML1232 REV E 112015

Component Value Note

R5a, R5b 8.2K 5%

R6a, R6b 1K 5%

Cc 0.1 µF

Vcm 0.350 volts

Cable Connected AC Coupled Application (Figure 3)

HCSL Output Buffer

L1'

R1b

L2'

R1a

L4'

R2a R2b

Down Device

REF_CLK Input

Figure 3

L3'

R3 R4

PCIe Device

REF_CLK Input

Figure 4

R5a

L4'

3.3 Volts

R5b

R6a R6b

P1-P3 P4-P6 P7-P9 P10-P12 P13-P15 P16-P18 P19-P19

9ZML1232BKLF

Mfr. #:

Buy 9ZML1232BKLF

Manufacturer:

IDT

Description:

Clock Buffer Buffer

Lifecycle:

New from this manufacturer.

Delivery:

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9ZML1232BKLF

9ZML1232BKLF

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