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www.pericom.com

PI6LC48H04

Rev.A

04/07/2015

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PI6LC48H04

PCIe 3.0 and Ethernet Clock Generator with 4 HCSL Outputs

Pin Description

Pin # Pin Name

I/O Type

Description

1

VDDX

Power

Crystal supply pin.

2

OE0&1

Input

Pull-up

Output enable pin for Q0+/- and Q1+/-. When HIGH, output is enabled

and active. When LOW, output is disabled and in high impedance state.

Don’t care if OE is LOW. Internal 343kΩpull-up resistor.

3

S0

Input

Pull-up

Frequency select pin. Internal 343kΩ pull-up resistor.

4

S1

Input

Pull-up

Frequency select pin. Internal 343kΩ pull-up resistor.

5

XTAL_IN/CLK Input

Crystal or clock input. Connect to a 25MHz crystal or single ended

clock.

6

XTAL_OUT

Output

Crystal output. Leave unconnected for clock input.

7

PD#

Input

Pull-up

Power down pin. When HIGH, the device is in normal operation. When

LOW, the device is in power down mode and all outputs are in high

impedance state. Internal 343kΩ pull-up resistor.

8

OE

Input

Pull-up

Output enable pin for all outputs. When HIGH, Q2+/- and Q3+/- are en-

abled and active and Q0+/- and Q1+/- depends on OE0&1. When LOW,

all outputs are disabled and in high impedance state and not dependent

on OE0&1. Internal 343kΩ pull-up resistor.

9

GNDX

Power

Crystal ground.

10

VSWING_

CTRL

Input

Pull-up and

pull down

VOH selection pin for all outputs. Tri-level selction for different voltage

swings.

11,12 Q3-, Q3+

Output

Low power HCSL clock output 3.

13,14 Q2-, Q2+

Output

Low power HCSL clock output 2.

15

VDDOA

Power

Analog and output supply pin.

16

GNDOA

Power

Analog and output ground.

17,18

Q1-, Q1+

Output

Low power HCSL clock output 1.

19,20 Q0-, Q0+

Output

Low power HCSL clock output 0.

Table 1: Output Select Table (25MHz Xtal Input)

S1

S0

CLK(MHz)

0

0

156.25

0

1

100

1

0

125

1

1

200 (Default)

Table 2: Output Enable Table

OE

OE0&1

Q0+/-

Q1+/-

Q2+/-

Q3+/-

0

0

HiZ

HiZ

HiZ

HiZ

0

1

HiZ

HiZ

HiZ

HiZ

1

0

HiZ

HiZ

Active

Active

1 (Default)

1 (Default)

Active

Active

Active

Active

Table 1a: Output Select Table (Generating other frequencies)

Xtal Input Freq.

S1

S0

CLK(MHz)

21.33MHz

0

0

133.3MHz

26.66MHz

1

0

133.3MHz

Note: Above frequencies are only for the provided settings. Do

not deviate from provided S1, S0 settings. For any other output

frequencies, please contact Pericom

15-0047