ICS951412AFLF
ICS951412AFLF Datasheet
ICS951412A
| Part | Datasheet |
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ICS951412AFLF |
ICS951412AFLF (pdf) |
| Related Parts | Information |
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ICS951412AFLFT |
ICS951412AFLFT |
ICS951412AGLFT |
ICS951412AGLFT |
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ICS951412AGLF |
ICS951412AGLF |
| PDF Datasheet Preview |
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| Integrated Circuit Systems, Inc. ICS951412A System Clock Chip for ATI RS480 K8-based Systems Recommended Application ATI RS480 systems using AMD K8 processors Output Features • 3 - MHz REF clocks • 1 - USB_48MHz USB clock • 1 - HyperTransport 66 MHz clock seed • 1 - PCI 33 MHz clock seed • 2 - Pairs of AMD K8 clocks • 6 - Pairs of SRC/PCI Express* clocks • 2 - Pairs of ATIG SRC/PCI Express clocks Features • 2 - Programmable Clock Request pins for SRC clocks • Spread Spectrum for EMI reduction • Outputs may be disabled via SMBus • External crystal load capacitors for maximum frequency accuracy Pin Configuration X1 1 X2 2 VDD48 3 USB_48MHz 4 GND 5 NC 6 SCLK 7 SDATA 8 **FS2 9 **CLKREQA# 10 **CLKREQB# 11 SRCCLKT7 12 SRCCLKC7 13 VDDSRC 14 GNDSRC 15 SRCCLKT6 16 SRCCLKC6 17 SRCCLKT5 18 SRCCLKC5 19 GNDSRC 20 VDDSRC 21 SRCCLKT4 22 SRCCLKC4 23 SRCCLKT3 24 SRCCLKC3 25 GNDSRC 26 ATIGCLKT1 27 ATIGCLKC1 28 ICS951412 56 VDDREF 55 GND 54 **FS0/REF0 53 **FS1/REF1 52 REF2 51 VDDPCI 50 PCICLK0 49 GNDPCI 48 VDDHTT 47 HTTCLK0 46 GNDHTT 45 CPUCLK8T0 44 CPUCLK8C0 43 VDDCPU 42 GNDCPU 41 CPUCLK8T1 40 CPUCLK8C1 39 VDDA 38 GNDA 37 IREF 36 GNDSRC 35 VDDSRC 34 SRCCLKT0 33 SRCCLKC0 32 VDDATI 31 GNDATI 30 ATIGCLKT0 29 ATIGCLKC0 Note Pins preceeded by '**' have a 120 Kohm Internal Pull Down resistor 56 Pin SSOP/TSSOP Power Groups Pin Number 43 14, 21, 32,35 42 15, 20, 26,31,36 Xtal, REF PCICLK output HTTCLK output CPU Outputs SRC outputs Analog, CPU PLL USB_48MHz output Functionality CPU MHz Hi-Z HTT MHz Hi-Z X/3 PCI MHz Hi-Z X/6 *Other names and brands may be claimed as the property of others. ICS951412A Pin Descriptions PIN # PIN NAME 3 VDD48 4 USB_48MHz 5 GND 6 NC 7 SCLK 8 SDATA 9 **FS2 10 **CLKREQA# 11 **CLKREQB# 12 SRCCLKT7 13 SRCCLKC7 14 VDDSRC 15 GNDSRC 16 SRCCLKT6 17 SRCCLKC6 18 SRCCLKT5 19 SRCCLKC5 20 GNDSRC 21 VDDSRC 22 SRCCLKT4 23 SRCCLKC4 24 SRCCLKT3 25 SRCCLKC3 26 GNDSRC 27 ATIGCLKT1 28 ATIGCLKC1 PIN TYPE IN OUT PWR OUT PWR N/A IN I/O IN OUT PWR OUT PWR OUT PWR OUT Ordering Information ICS951412AFLFT Example: ICS XXXX A F - LF T Designation for tape and reel packaging Lead Free, RoHS Compliant Package Type F = SSOP Device Type consists of 3 or 4 digit numbers Prefix ICS, AV = Standard Device ICS951412A INDEX AREA c E1 E SEATING PLANE aaa C 56-Lead mm. Body, mm. Pitch TSSOP 240 mil 20 mil In Millimeters In Inches SYMBOL COMMON DIMENSIONS COMMON DIMENSIONS SEE VARIATIONS SEE VARIATIONS BASIC BASIC BASIC BASIC SEE VARIATIONS SEE VARIATIONS VARIATIONS D mm. Reference Doc. JEDEC Publication 95, MO-153 10-0039 D inch Ordering Information ICS951412AGLFT Example: ICS XXXX A G - LF T Designation for tape and reel packaging Lead Free, RoHS Compliant Package Type G = TSSOP Device Type consists of 3 or 4 digit numbers Prefix ICS, AV = Standard Device A 6/12/2006 Initial Release ICS951412A Page # - |
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