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ICS951413 Dataheets PDF



Part Number ICS951413
Manufacturers ICS
Logo ICS
Description Programmable System Clock Chip
Datasheet ICS951413 DatasheetICS951413 Datasheet (PDF)

www.DataSheet4U.com Integrated Circuit Systems, Inc. ICS951413 Programmable System Clock Chip for ATI RS400 P4TM-based Systems Recommended Application: ATI RS400 systems using Intel P4TM processors Output Features: • 6 - Pairs of SRC/PCI Express* clocks • 2 - Pairs of programmable SRC/PCI Express (ATIG) clocks • 3 - Pairs of Intel P4 clocks • 3 - 14.318 MHz REF clocks • 1 - 48MHz USB clock • 1 - 33 MHz PCI clock seed Key Specifications: • CPU outputs cycle-cycle jitter < 85ps • SRC output cyc.

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www.DataSheet4U.com Integrated Circuit Systems, Inc. ICS951413 Programmable System Clock Chip for ATI RS400 P4TM-based Systems Recommended Application: ATI RS400 systems using Intel P4TM processors Output Features: • 6 - Pairs of SRC/PCI Express* clocks • 2 - Pairs of programmable SRC/PCI Express (ATIG) clocks • 3 - Pairs of Intel P4 clocks • 3 - 14.318 MHz REF clocks • 1 - 48MHz USB clock • 1 - 33 MHz PCI clock seed Key Specifications: • CPU outputs cycle-cycle jitter < 85ps • SRC output cycle-cycle jitter <125ps • PCI outputs cycle-cycle jitter < 250ps • +/- 300ppm frequency accuracy on CPU & SRC clocks Features/Benefits: • 2 - Programmable Clock Request pins for SRC clocks • Supports CK410 or CK409 frequency table mapping • Spread Spectrum for EMI reduction • Outputs may be disabled via SMBus • External crystal load capacitors for maximum frequency accuracy Functionality - (CK410# = 0) SRC PCI 1 1 1 CPU FS_C FS_B FS_A MHz MHz MHz 0 266.66 100.00 33.33 0 1 133.33 100.00 33.33 0 0 200.00 100.00 33.33 1 1 166.66 100.00 33.33 0 333.33 100.00 33.33 0 1 100.00 100.00 33.33 1 0 400.00 100.00 33.33 1 1 RESERVED Functionality - (CK410# = 1) FS_C 1 1 CPU Byte6 FS_B FS_A MHz bit5 0 1 0 1 0 1 0 1 0 0 1 1 0 0 1 1 100.00 200.00 133.33 166.67 200.00 400.00 266.67 333.33 1 Pin Configuration REF MHz 14.318 14.318 14.318 14.318 14.318 14.318 14.318 14.318 USB MHz 48.000 48.000 48.000 48.000 48.000 48.000 48.000 48.000 0 1 100.00 100.00 100.00 100.00 100.00 100.00 100.00 100.00 33.33 33.33 33.33 33.33 33.33 33.33 33.33 33.33 14.318 14.318 14.318 14.318 14.318 14.318 14.318 14.318 48.000 48.000 48.000 48.000 48.000 48.000 48.000 48.000 1. FS_C, FS_B and FS_A are low-threshold inputs. Please see the V IL_FS and VIH_FS specifications in the Input/Supply/Common Output Parameters Table for correct values. Note: Pins preceeded by '**' have a 120 Kohm Internal Pull Down resistor Pins preceeded by '*' have a 120 Kohm Internal Pull Up resistor 56-pin SSOP & TSSOP 0929C—03/07/05 *Other names and brands may be claimed as the property of others. ICS951413 SRC MHz PCI MHz REF MHz USB MHz X1 X2 VDD48 USB_48MHz GND VTT_PWRGD#/PD SCLK SDATA **FS_C **CLKREQA# **CLKREQB# SRCCLKT7 SRCCLKC7 VDDSRC GNDSRC SRCCLKT6 SRCCLKC6 SRCCLKT5 SRCCLKC5 GNDSRC VDDSRC SRCCLKT4 SRCCLKC4 SRCCLKT3 SRCCLKC3 GNDSRC ATIGCLKT1 ATIGCLKC1 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 56 55 54 53 52 51 50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 VDDREF GND **FS_A/REF0 **FS_B/REF1 **TEST_SEL/REF2 VDDPCI **CK410#/PCICLK0 GNDPCI *CPU_STOP# CPUCLKT0 CPUCLKC0 VDDCPU GNDCPU CPUCLKT1 CPUCLKC1 CPUCLKT2_ITP CPUCLKC2_ITP VDDA GNDA IREF GNDSRC VDDSRC SRCCLKT0 SRCCLKC0 VDDATI GNDATI ATIGCLKT0 ATIGCLKC0 www.DataSheet4U.com Integrated Circuit Systems, Inc. ICS951413 Pin Description PIN # 1 2 3 4 5 6 7 8 9 PIN NAME X1 X2 VDD48 USB_48MHz GND VTT_PWRGD#/PD SCLK SDATA **FS_C PIN TYPE IN OUT PWR OUT PWR IN IN I/O IN DESCRIPTION Crystal input, Nomi.


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