PCS5I9352 Datasheet, PDF (1/12 Pages) PulseCore Semiconductor – 2.5V or 3.3V, 200MHz, 11 Output Zero Delay Buffer

September 2006
rev 0.3
PCS5I9352
2.5V or 3.3V, 200MHz, 11 Output Zero Delay Buffer
Features
• Output frequency range: 16.67MHz to 200MHz
• Input frequency range: 16.67MHz to 200MHz
• 2.5V or 3.3V operation
• Split 2.5V/3.3V outputs
• ± 2% max Output duty cycle variation
• 11 Clock outputs: Drive up to 22 clock lines
• LVCMOS reference clock input
• 125-pS max output-output skew
• PLL bypass mode
• Spread Aware^TM
• Output enable/disable
• Pin compatible with MPC9352 and MPC952
• Industrial temperature range: -40°C to +85°C
• 32-Pin 1.0mm TQFP & LQFP Packages
Functional Description
The PCS5I9352 features an LVCMOS reference clock
input and provides 11 outputs partitioned in 3 banks of 5, 4,
and 2 outputs. Bank A divides the VCO output by 4 or 6
while Bank B divides by 4 and 2 and Bank C divides by 2
and 4 per SEL(A:C) settings, see Table 2. These dividers
allow output to input ratios of 3:1, 2:1, 3:2, 1:1, 2:3, 1:2, and
1:3. Each LVCMOS compatible output can drive 50Ω series
or parallel terminated transmission lines. For series
terminated transmission lines, each output can drive one or
two traces giving the device an effective fanout of 1:22.
The PLL is ensured stable given that the VCO is configured
to run between 200MHz to 500MHz. This allows a wide
range of output frequencies from 16.67MHz to 200MHz.
For normal operation, the external feedback input, FB_IN,
is connected to one of the outputs. The internal VCO is
running at multiples of the input reference clock set by the
feedback divider, see Table 1.
The PCS5I9352 is a low voltage high performance 200MHz
PLL-based zero delay buffer designed for high speed clock
distribution applications.
When PLL_EN# is HIGH, PLL is bypassed and the
reference clock directly feeds the output dividers. This
mode is fully static and the minimum input clock frequency
specification does not apply.
PulseCore Semiconductor Corporation
1715 S. Bascom Ave Suite 200, Campbell, CA 95008 • Tel: [phone] • Fax: [phone]
www.pulsecoresemi.com
Notice: The information in this document is subject to change without notice.