CY28517 Datasheet, PDF (1/12 Pages) Cypress Semiconductor – PCI Express Clock Generator

CY28517
PCI Express Clock Generator
Features
■ Four 100 MHz differential clocks
■ 48 MHz clock
■ Two 25 MHz clocks
■ 27 MHz Reference Clock
■ OE control per clock output
■ Selectable drive strength per output
Logic Block Diagram
OE_100_25
X1/CLK
X2
XTAL
OSC
RSET
■ Selectable, Triangle, and Lexmark profiles
■ SMbus support with readback capabilities
■ 3.3V power supply
■ Packages are Pb free and ROHS compliant
■ 28-pin TSSOP packages
100M 25M 27M 48M
x4
x2
x1
x1
PLL1
PLL2
27M
100MT[A:D]
100MC[A:D]
48M
SDATA
SCLK
PLL3
SMBus
Logic
25M[A:B]
Cypress Semiconductor Corporation • 198 Champion Court
Document #: 001-42225 Rev. *A
• San Jose, CA 95134-1709 • 408-943-2600
Revised November 02, 2007
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