PI6C557-05LEX Pericom Semiconductor, PI6C557-05LEX Datasheet - Page 2

• Manufacturer Part Number: PI6C557-05LEX
• Description: Clock Generators & Support Products PCI express Gen 2 4 output clock gen
• Manufacturer: Pericom Semiconductor

Specifications of PI6C557-05LEX

• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Pin Description
Table 2: Spread Selection Table
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
0
0
0
0
1
1
1
1
Pin #
S2
10-0222
VDDXD
S0
S1
S2
X1
X2
PD
OE
GND
IREF
CLK3
CLK3
CLK2
CLK2
VDDODA
GND
CLK1
CLK1
CLK0
CLK0
Pin Name
0
0
1
1
0
0
1
1
S1
0
1
0
1
0
1
0
1
S0
Power
Input
Input
Input
Input
Output
Input
Input
Power
Output
Output
Output
Output
Output
Power
Power
Output
Output
Output
Output
I/O Type Description
Spread %
-0.5
-1.0
-1.5
No Spread
-0.5
-1.0
-1.5
No Spread
Connect to a +3.3V source.
Spread Spectrum Select pin #0. See Spread Spectrum Selection table. Internal pull-up resistor.
Spread Spectrum Select pin #1. See Spread Spectrum Selection table. Internal pull-up resistor.
Spread Spectrum Select pin #2. See Spread Spectrum Selection table. Internal pull-up resistor.
Crystal connection.
Crystal connection.
Power down. Internal pull-up resistor.
Output enable. Tri-states output (High=enable outputs); Low=disable outputs). Internal pull-
up resistor.
Connect to digital circuit ground.
Precision resistor attached to this pin is connected to the internal current reference.
Selectable 100/200 MHz Spread Spectrum differential compliment output clock 3.
Selectable 100/200 MHz Spread Spectrum differential true output clock 3.
Selectable 100/200 MHz Spread Spectrum differential compliment output clock 2.
Selectable 100/200 MHz Spread Spectrum differential true output clock 2.
Connect to a +3.3V analog source.
Output and Analog circuit ground
Selectable 100/200 MHz Spread Spectrum differential compliment output clock 1.
Selectable 100/200 MHz Spread Spectrum differential true output clock 1.
Selectable 100/200 MHz Spread Spectrum differential compliment output clock 0.
Selectable 100/200 MHz Spread Spectrum differential true output clock 0.
Down
Down
Down
Not Applicable
Down
Down
Down
Not Applicable
Spread Type
2
PCIe® 2.0 Clock Generator with 4 HCSL Outputs
100
100
100
100
200
200
200
200
Output Frequency
PI6C557-05
PS9061
09/17/10