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CY29976
3.3V, 125-MHz, Multi-Output Zero Delay Buffer
Cypress Semiconductor Corporation
•
198 Champion Court
•
San Jose
, CA 95134-1709
•
408-943-2600
Document #: 38-07413 Rev. *B
Revised September 09, 2008
Features
■ Output frequency up to 125 MHz
■ Supports PowerPC
®, and Pentium® processors
■ 12 clock outputs: frequency configurable
■ Configurable Output Disable
■ Two reference clock inputs for dynamic toggling
■ Oscillator or PECL reference input
■ Spread spectrum compatible
■ Glitch-free output clocks transitioning
■ 3.3V power supply
■ Pin compatible with SC973X
■ Industrial temperature range: –40°C to +85°C
■ 52-Pin TQFP package
Table 1. Frequency Table[1]
VC0_SEL
FB_SEL2
FB_SEL1
FB_SEL0
FVCO
00
00
8x
00
01
12x
00
10
16x
00
11
20x
01
00
8x
01
01
12x
01
10
16x
01
11
20x
10
00
4x
10
01
6x
10
10
8x
10
11
10x
11
00
4x
11
01
6x
11
10
8x
11
11
10x
Note
1. x = the reference input frequency, 200MHz < FVCO < 480MHz.
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