CY28RS480-1 Cypress Semiconductor, CY28RS480-1 Datasheet - Page 16

• Manufacturer Part Number: CY28RS480-1
• Description: Clock Generator
• Manufacturer: Cypress Semiconductor

Document #: 38-07714 Rev. *C
Document History Page
Document Title: CY28RS480-1 Clock Generator for ATI
Document Number: 38-07714
REV.
*A
*B
*C
**
ECN NO. Issue Date
204582
304231
339334
390576
See ECN
See ECN
See ECN
See ECN
Change
Orig. of
RGL
RGL
RGL
RGL
PRELIMINARY
Changed polarity of CLKREQ#
Changed the Slew rate to max of 6.5V/ns
Changed the IDD max load from 400 to 450 mA
Changed the IPD Outputs Driven from 70 to 75 mA
Changed the CPU Duty Cycle from 45 to 53 to 45 to 55%
Changed the HTT66 Cycle to cycle jitter from 300 to 450 ps
Fixed the Single-ended loading diagram
Changed from Advance to Preliminary
Minor Change: Byte7 bit 4 corrected to 0 - Vendor ID
Changed CPU TR/TF min. from 2 to 1.5V/ns
Changed the Output VCM
Changed PCI TR/TF to min 0.3ns and max 1.4ns
Changed HTT66 TR/TF to Rise time min. 0.9V.ns and Max. 5.4V/ns, Fall
Time min. 0.9V/ns and max. 4.8V/ns
Changed HTT66 TCCJ max. to 275ps
Changed HTT66 TSKEW max. to 1200ps
Changed USB THIGH max. to 10.200ns
Changed USB TR/TF min. to 0.3ns and max to 1.4ns
Changed REF TR/TF Rise time min. to 0.66V/ns and max. 4.0V/ns, Fall Time
min. 0.5V/ns and max. 4.0V/ns
New Data Sheet

RS480 Chipset
www.DataSheet.co.kr
Description of Change
CY28RS480-1
Page 16 of 16
Datasheet pdf - http://www.DataSheet4U.net/