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ICS950818 Datasheet(PDF) 1 Page - Renesas Technology Corp |
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ICS950818 Datasheet(HTML) 1 Page - Renesas Technology Corp |
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1 / 20 page  Integrated Circuit Systems, Inc. ICS950818 Frequency Generator with 200MHz Differential CPU Clocks Recommended Application: Pin Configuration CK-408 clock for Brookdale/Odem/Montara-GM for P4/Banias processor. X1 1 X2 2 48 VDDREF 47 REF Output Features: 2 - Differential CPU Clock Pairs @ 3.3V 8 - PCI (3.3V)@ 33.3MHz including 2 1x/2x selectable PCI clocks 3 - PCI_F/PCI selectable (3.3V)@ 33.3MHz 1 - USB (3.3V)@ 48MHz, 1 DOT (3.3V)@ 48MHz 1 - REF (3.3V)@ 14.318MHz 4 - 3V66 (3.3V)@ 66.6MHz 1 - VCH/3V66 (3.3V)@ 48MHz or 66.6MHz Features: Selectable 1X or 2X strength for REF and PCI via SMBus interface Programmable group to group skew Linear programmable frequency and spreading % Efficient power management scheme through PD#, CPU_STOP# and PCI_STOP#. Uses external 14.318MHz crystal Stop clocks and functional control available through SMBus interface. Key Specifications: • CPU Output Jitter <150ps 3V66 Output Jitter <250ps CPU Output Skew <1oops Block Diagram X1 X2 Vtt_PWRGD# PD# CPU_STOP# PCI STOP# F:6:�l: SCLK Control Logic Config. Reg. 48MHz_USB 48MHz_DOT 3V66 (4:2) REF : CPUCLKT (1:0) 1 3 CPUCLKC (1:0) 1 PCICLK (10:0) PCICLK_F (2:0) I ,_________________, 0825F-11/19/03 GND 3 46 FS1 PCICLK_F0/PCICLK6 4 45 CPU_STOP# PCICLK_F1/PCICLK7 5 44 VDDCPU PCICLK_F2/PCICLK8 6 43 CPUCLKT0 GND 7 42 CPUCLKC0 PCICLK0 8 41 GND PCICLK1 9 40 VDDCPU *PCICLK2 10 00 39 CPUCLKT1 VDDPCI 11 00 38 CPUCLKC1 *PCICLK3 12 C) 37 IREF PCICLK4 13 en 36 FS0 PCICLK5 14 ti) 35 48MHz_USB 0 VDD3V66 15 - 34 48MHz_DOT GND 16 33 VDD48 3V66_2 17 32 GND 3V66_3 18 31 3V66_1NCH_CLK 3V66_4 19 30 PCI_STOP# PCICLK9 20 29 PCICLK10 PD# 21 28 VDD3V66 VDDA 22 27 GND GND 23 26 SCLK Vtt_PWRGD# 24 25 SDATA 48-Pin 6.10 mm. Body, 0.50 mm. pitch TSSOP *These outputs have selectable 1X/2X strength via SMBus Frequency Select Table 1 Freq Sel 3V66(4:1) USB/DOT CPU MHz MHz PCI MHz REF MHz MHz FS FS 1 0 0 0 100.00 66.66 33.33 14.318 48.008 0 1 166.67 66.66 33.33 14.318 48.008 1 0 133.33 66.66 33.33 14.318 48.008 1 1 200.00 66.66 33.33 14.318 48.008 |
Similar Part No. - ICS950818 |
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Similar Description - ICS950818 |
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