9ZX21501CKLF Datasheet 9ZX21501CKLF, 9ZX21501CKLFT | P13-P15

9ZX21501C

FIFTEEN OUTPUT DIFFERENTIAL ZBUFFER FOR PCIE GEN2/3 AND QPI

IDT®

FIFTEEN OUTPUT DIFFERENTIAL ZBUFFER FOR PCIE GEN2/3 AND QPI 13

9ZX21501C REV F 041613

SMBusTable: Vendor & Revision ID Register

Pin # Name Control Function T

e 0 1 Defaul

Bit 7

RID3 R X

Bit 6

RID2 R X

Bit 5

RID1 R X

Bit 4

RID0 R X

Bit 3

VID3 R - - 0

Bit 2

VID2 R - - 0

Bit 1

VID1 R - - 0

Bit 0

VID0 R - - 1

SMBusTable: DEVICE ID

Pin # Name Control Function T

e 0 1 Defaul

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

SMBusTable: Byte Count Register

Pin # Name Control Function T

e 0 1 Defaul

Bit 7

Bit 6

Bit 5

Bit 4

BC4 RW 0

Bit 3

BC3 RW 1

Bit 2

BC2 RW 0

Bit 1

BC1 RW 0

Bit 0

BC0 RW 0

SMBusTable: Reserved Register

Pin # Name Control Function T

e 0 1 Defaul

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

Device ID 2

Device ID 1

Device ID 4

REVISION ID

B rev = 0001

C rev = 0010

te 8

Reserved

Device ID 3

Default value is 8 hex, so 9

bytes (0 to 8) will be read back

by default.

Writing to this register configures how

many bytes will be read back.

te 7

te 5

te 6

Reserved

Device ID 0

VENDOR ID

Reserved

Device ID 5

Device ID 6

Device ID is 219 decimal or

DB hex.

Device ID 7

(

MSB

)

9ZX21501C

FIFTEEN OUTPUT DIFFERENTIAL ZBUFFER FOR PCIE GEN2/3 AND QPI

IDT®

FIFTEEN OUTPUT DIFFERENTIAL ZBUFFER FOR PCIE GEN2/3 AND QPI 14

9ZX21501C REV F 041613

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 33 ohm 1

Rt 49.9 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

HCSL Output Buffer

L1'

L2'

L4'

L3L3'

Rt Rt

PCI Express

Down Device

REF_CLK Input

Figure 1: Down Device Routing

HCSL Output Buffer

L1'

L2'

L4'

L3L3'

Rt Rt

PCI Express

Add-in Board

REF_CLK Input

Figure 2: PCI Express Connector Routing

9ZX21501C

FIFTEEN OUTPUT DIFFERENTIAL ZBUFFER FOR PCIE GEN2/3 AND QPI

IDT®

FIFTEEN OUTPUT DIFFERENTIAL ZBUFFER FOR PCIE GEN2/3 AND QPI 15

9ZX21501C REV F 041613

Vdiff Vp-p Vcm R1 R2 R3 R4 Note

0.45v 0.22v 1.08 33 150 100 100

0.58 0.28 0.6 33 78.7 137 100

0.80 0.40 0.6 33 78.7 none 100 ICS874003i-02 input compatible

0.60 0.3 1.2 33 174 140 100 Standard LVDS

R1a = R1b = R1

R2a = R2b = R2

Alternative Termination for LVDS and other Common Differential Signals (figure 3)

HCSL Output Buffer

L1'

R1b

L2'

R1a

L4'

R2a R2b

Down Device

REF_CLK Input

Figure 3

L3'

R3 R4

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 4)

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

9ZX21501CKLF

Mfr. #:

Buy 9ZX21501CKLF

Manufacturer:

IDT

Description:

Clock Buffer PCIE BUFFER - Z TECH

Lifecycle:

New from this manufacturer.

Delivery:

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9ZX21501CKLF

9ZX21501CKLF

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