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1 / 24 page  ICS9LPRS462 IDTTM/ICSTM Low Power Clock for ATI RS/RD600 series chipsets for AMD CPUs 1378A—04/07/08 Low Power Clock for ATI RS/RD600 series chipsets for AMD CPUs DATASHEET 1 Description Output Features ATI RD/RS600 series systems using AMD CPUs • Integrated Series Resistors on differential outputs • Greyhound Compatible CPU outputs • 2 - 0.7V Low Power differential CPU pairs • 8 - 0.7V Low Power differential SRC pairs • 4 - 0.7V Low Power differential ATIG pairs • 1 - 66 MHz HyperTransport clock • 2 - 48MHz USB clocks • 3 - 14.318MHz Reference clocks Features/Benefits: Key Specifications • CPU outputs cycle-to-cycle jitter <150ps • SRC outputs cycle-to-cycle jitter < 125ps • ATIG outputs cycle-to-cycle jitter < 125ps • +/- 100ppm frequency accuracy on all outputs if REF is tuned to +/-100ppm • 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 Pin Configuration VDD GND 5 8 USB_48 outputs 14,23,26,36 15,22,27,37 SRCCLK outputs 33 32 ATIGCLK differential outputs 42 41 Analog, PLL 46 45 CPUCLK8 differential outputs 52 50 HTTCLK output 2 1 REF outputs Pin Number Description FS2 FS1 FS0 CPU MHz HTT MHz SRC MHz ATIG MHz USB MHz 00 0Hi-Z Hi-Z 100.00 100.00 48.00 0 0 1 X / 2 X / 3 100.00 100.00 48.00 0 1 0 230.00 76.67 100.00 100.00 48.00 0 1 1 240.00 80.00 100.00 100.00 48.00 1 0 0 100.00 66.66 100.00 100.00 48.00 1 0 1 133.33 66.66 100.00 100.00 48.00 1 1 0 166.67 66.66 100.00 100.00 48.00 1 1 1 200.00 66.66 100.00 100.00 48.00 Funtionality Power Groups GNDREF 1 64 FS0/REF0 VDDREF 2 63 FS1/REF1 X1 3 62 FS2/REF2 X2 4 61 **PD VDD48 5 60 VDDHTT 48MHz_0 6 59 HTTCLK0 48MHz_1 7 58 GNDHTT GND48 8 57 *CLKREQA# SMBCLK 9 56 CPUKG0T_LPR SMBDAT 10 55 CPUKG0C_LPR RESET_IN# 11 54 VDDCPU SRC7T_LPR 12 53 GNDCPU SRC7C_LPR 13 52 CPUKG1T_LPR VDDSRC 14 51 CPUKG1C_LPR GNDSRC 15 50 VDDA SRC6T_LPR 16 49 GNDA SRC6C_LPR 17 48 NC SRC5T_LPR 18 47 SRC0T_LPR SRC5C_LPR 19 46 SRC0C_LPR SRC4T_LPR 20 45 GNDSRC SRC4C_LPR 21 44 VDDSRC GNDSRC 22 43 SRC1T_LPR VDDSRC 23 42 SRC1C_LPR SRC3T_LPR 24 41 ATIG0T_LPR SRC3C_LPR 25 40 ATIG0C_LPR SRC2T_LPR 26 39 VDDATIG SRC2C_LPR 27 38 GNDATIG VDDSRC 28 37 ATIG1T_LPR GNDSRC 29 36 ATIG1C_LPR ATIG3T_LPR 30 35 ATIG2T_LPR ATIG3C_LPR 31 34 ATIG2C_LPR *CLKREQB#32 33*CLKREQC# 64-TSSOP * Internal Pull-Up Resistor ** Internal Pull-Down Resistor |
Số phần tương tự - ICS9LPRS462 |
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Mô tả tương tự - ICS9LPRS462 |
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