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ICS9250-08 датащи(PDF) 3 Page - Renesas Technology Corp

номер детали ICS9250-08
подробное описание детали  Frequency Generator & Integrated Buffers for Celeron & PII/III™
PDF  17 Pages
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производитель  RENESAS [Renesas Technology Corp]
домашняя страница  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

ICS9250-08 датащи(HTML) 3 Page - Renesas Technology Corp

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ICS9250-08
0378J—05/17/05
General Description
The ICS9250-08 is the single chip clock solution for
Desktop/designs using BX, Appollo Pro 133 type of chip
sets. It provides all necessary clock signals for such a
system.
Spread spectrum may be enabled through I
2C
programming.
Spread spectrum typically reduces system EMI by 8dB to
10dB. This simplifies EMI qualification without resorting
to
board design iterations or costly shielding. The ICS9250-
08
employs a proprietary closed loop design, which tightly
controls the percentage of spreading over process and
temperature variations.
Serial programming I
2C interface allows changing functions,
stop clock programming and frequency selection.
Power Groups
VDDREF = REF [1:0], X1, X2
VDDPCI = PCICLK_F, PCICLK [5:0]
VDDSDR = SDRAM [15:0], supply for PLL core,
VDD48 = 48MHz, 24MHz
VDDLIOAPIC = IOAPIC_F
VDDLCPU = CPUCLK_F [2:1]
Mode Pin - Power Management Input Control
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