ICS9LPRS464AGLFT

DATASHEET ICS9LPRS464 System Clock Chip for ATI RS/RD600 series chipsets using AMD CPUs Description Key Specifications ATI RD/RS600 series systems using AMD CPUs • • • • Output Features • • • • • • • • Integrated Series Resistors on differential outputs Greyhound Compatible CPU outputs 2 - 0.7V Low Power differential CPU pairs 6 - 0.7V Low Power differential SRC pairs 2 - 0.7V Low Power differential ATIG pairs 1 - 66 MHz HyperTransport clock 2 - 48MHz USB clocks 3 - 14.318MHz Reference clocks 9LPRS464 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 Features/Benefits: • 3 - Programmable Clock Request pins for SRC and ATIG clocks ATIGCLKs are programmable for frequency Spread Spectrum for EMI reduction Outputs may be disabled via SMBus External crystal load capacitors for maximum frequency accuracy • • • • Power Groups Pin Configuration GNDREF VDDREF X1 X2 VDD48 48MHz_0 48MHz_1 GND48 SMBCLK SMBDAT RESET_IN# SRC5T_LPR SRC5C_LPR VDDSRC GNDSRC SRC4T_LPR SRC4C_LPR SRC3T_LPR SRC3C_LPR SRC2T_LPR SRC2C_LPR GNDSRC VDDSRC SRC1T_LPR SRC1C_LPR VDDSRC GNDSRC *CLKREQB# CPU outputs cycle-to-cycle jitter