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ICS954321 Datasheet(PDF) 1 Page - Renesas Technology Corp |
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ICS954321 Datasheet(HTML) 1 Page - Renesas Technology Corp |
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1 / 19 page  Integrated Circuit Systems, Inc. ICS954321 1078B–09/20/05 Programmable Timing Control Hub™ for P4™ processor Pin Configuration Recommended Application: CK410M Compliant Main Clock Output Features: • 2 - 0.7V current-mode differential CPU pairs • 8 - 0.7V current-mode differential SRC pairs • 1 - 0.7V current-mode differential CPU_ITP/SRC selectable pair • 4 - PCI (33MHz) • 1 - PCICLK_F, (33MHz) free-running • 1 - USB, 48MHz • 1 - DOT, 96MHz, 0.7V current differential pair • 1 - REF, 14.318MHz • 1 - 0.7V current-mode differential LCD/SRC selectable pair Key Specifications: • CPU outputs cycle-cycle jitter < 85ps • SRC outputs cycle-cycle jitter < 125ps • PCI outputs cycle-cycle jitter < 500ps • +/- 300ppm frequency accuracy on CPU, and SRC clocks • +/- 100ppm frequency accuracy on USB clocks Features/Benefits: • Supports tight ppm accuracy clocks for SRC • Supports programmable spread percentage and frequency • Uses external 14.318MHz crystal, external crystal load caps are required for frequency tuning • Supports undriven differential CPU, SRC pair in PD for power management. • OE# pins to support SRC power management. FunctionalityTable VDDPCI 1 64 PCICLK0 GND 2 63 PCI_STOP# PCICLK1 3 62 CPU_STOP# PCICLK2 4 61 FSLC/TEST_SEL *SEL_LCDCLK#/PCICLK3 5 60 REF ITP_EN/PCICLK_F0 6 59 GND *OE0# 7 58 X1 *OE1# 8 57 X2 *OE2# 9 56 VDDREF Vtt_PwrGd#/PD 10 55 SDATA VDD48 11 54 SCLK FSLA/USB_48MHz 12 53 GND GND 13 52 CPUCLKT0 DOTT_96MHz 14 51 CPUCLKC0 DOTC_96MHz 15 50 VDDCPU FSLB/TEST_MODE 16 49 CPUCLKT1 LCDCLK_SST/SRCCLKT0 17 48 CPUCLKC1 LCDCLK_SSC/SRCCLKC0 18 47 IREF SRCCLKT1 19 46 GNDA SRCCLKC1 20 45 VDDA VDDSRC 21 44 CPUCLKT2_ITP/SRCCLKT10 SRCCLKT2 22 43 CPUCLKC2_ITP/SRCCLKC10 SRCCLKC2 23 42 VDDSRC SRCCLKT3 24 41 SRCCLKT9 SRCCLKC3 25 40 SRCCLKC9 SRCCLKT4 26 39 GND SRCCLKC4 27 38 SRCCLKT8 VDDSRC 28 37 SRCCLKC8 GND 29 36 SRCCLKT7 SRCCLKT5 30 35 SRCCLKC7 SRCCLKC5 31 34 *OEA# *OE3#32 33*OEB# 64-TSSOP * Internal Pull-Up Resistor FS LC B6b2 FS LB B6b1 FS LA B6b0 CPU MHz SRC MHz PCI MHz REF MHz USB MHz DOT MHz Spread % 0 0 0 266.66 100.00 33.33 14.318 48.00 96.00 0.5% Down 0 0 1 133.33 100.00 33.33 14.318 48.00 96.00 0.5% Down 0 1 0 200.00 100.00 33.33 14.318 48.00 96.00 0.5% Down 0 1 1 166.66 100.00 33.33 14.318 48.00 96.00 0.5% Down 1 0 0 333.33 100.00 33.33 14.318 48.00 96.00 0.5% Down 1 0 1 100.00 100.00 33.33 14.318 48.00 96.00 0.5% Down 1 1 0 400.00 100.00 33.33 14.318 48.00 96.00 0.5% Down 1 1 1 200.00 100.00 33.33 14.318 48.00 96.00 0.5% Down |
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