PI6C20800SIAEX Pericom Semiconductor, PI6C20800SIAEX Datasheet

PI6C20800SIAEX

Manufacturer Part Number

PI6C20800SIAEX

Description

A 48/3.3V, 100MHZ PCIE GEN II DIFFERENTIAL HCSL CLOCK BUFFER, INDUSTRIAL TE

Manufacturer

Pericom Semiconductor

Datasheet

1.PI6C20800SIAEX.pdf (10 pages)

Specifications of PI6C20800SIAEX

Pack_quantity

1500

Comm_code

85423990

Lead_time

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Features

• Phase jitter filter for PCIe

• Eight Pairs of Differential Clocks

• Low skew < 50ps (PI6C20800S), <60ps (PI6C20800SI)

• Low Cycle-to-cycle jitter < 50ps

• Output Enable for all outputs

• Outputs Tristate control via SMBus

• Power Management Control

• Programmable PLL Bandwidth

• PLL or Fanout operation

• 3.3V Operation

• Industrial Temperature Option - PI6C20800SI

• Packaging (Pb-Free & Green):

— 48-Pin TSSOP (A)

Block Diagram

PLL/BYPASS#

— 48-Pin SSOP (V)

SRC_STOP#

SRC#

PWRDWN#

SRC_DIV#

SRC

PLL_BW#

10-0150

OE_INV

OE [0:7]

SCLK

SDA

PLL

Controller

SMBus

Output

Control

application

DIV

OUT0

OUT0#

OUT1

OUT1#

OUT2

OUT2#

OUT3

OUT3#

OUT4

OUT4#

OUT5

OUT5#

OUT6

OUT6#

OUT7

OUT7#

LOCK

Description

PI6C20800S is a PCI Express

clock buffer designed to be a companion to PI6C410BS PCI

Express clock generator for Intel server chipsets. The device

distributes the differential SRC clock from PI6C410BS to eight

differential pairs of clock outputs either with or without PLL.

The input SRC clock can be divided by 2 when SRC_DIV# is

LOW. The clock outputs are controlled by input selection of

SRC_STOP#, PWRDWN# and SMBus, SCLK and SDA. When

input of either SRC_STOP# or PWRDWN# is LOW, the output

clocks are Tristated. When PWRDWN# is LOW, the SDA and

SCLK inputs must be Tristated.

Pin Configuration

PLL/BYPASS#

SRC_DIV#

OUT0#

OUT1#

OUT2#

OUT3#

SRC#

OUT0

OUT1

OUT2

OUT3

SCLK

OE_0

OE_3

OE_1

OE_2

SRC

SDA

VSS

, high-speed, low-noise differential

HCSL Clock Buffer

PCI Express

LOCK

OE_7

OE_4

OUT7

OUT7#

OE_INV

OUT6

OUT6#

OE_6

OE_5

OUT5

OUT5#

OUT4

OUT4#

PLL_BW#

SRC_STOP#

PWRDWN#

PI6C20800S

REF

DD_A

SS_A

PS8887D

03/29/10

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