ICS9LPRS480

Integrated Circuit Systems, Inc. ICS9LPRS480 Programmable System Clock Chip for ATI RS780 - K8TM based Systems Recommended Application: ATI RS780 systems using AMD K8 processors Output Features: Integrated series resistors on all differential outputs. 1 - Greyhound compatible K8 CPU pairs 5 - low-power differential SRC pairs 2 - low-power differential chipset SouthBridge SRC pairs 1 - Selectable low-power differential 100MHz non-spread SATA/ SRC output 1 - Selectable low-power differential SRC / 27MHz Single Ended outputs 1 - Selectable HT3 100MHz low-power differential hypertransport clock / HT66MHz Single Ended outputs 1 - 48MHz USB clock 3 - 14.318MHz Reference clock 2 - low-power differential ATIG pairs 5- Dedicated CLKREQ# pins Pin Configuration HTT0C_LPRS/66M HTT0T_LPRS/66M REF0/SEL_HTT66 REF1/SEL_SATA CPUKG0C_LPRS 48 VDDCPU 47 VDDCPU_IO 46 GNDCPU 45 CLKREQ1#* 44 CLKREQ2#* 43 GNDSATA 42 SRC6T/SATAT_LPRS 41 SRC6C/SATAC_LPRS 40 VDDSATA 39 CLKREQ3#* 38 CLKREQ4#* 37 SB_SRC0T_LPRS 36 SB_SRC0C_LPRS 35 VDDSB_SRC 34 VDDSB_SRC_IO 33 GNDSB_SRC 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 GNDSRC VDDSRC_IO *CLKREQ0# GNDATIG VDDATIG_IO VDDATIG ATIG1C_LPRS ATIG0C_LPRS SB_SRC1C_LPRS SB_SRC1T_LPRS ATIG1T_LPRS ATIG0T_LPRS SRC1C_LPRS SRC1T_LPRS SRC0C_LPRS SRC0T_LPRS CPUKG0T_LPRS Key Specifications: CPU outputs cycle-to-cycle jitter < 150ps SRC outputs cycle-to-cycle jitter < 125ps SB_SRC outputs cycle-to-cycle jitter < 125ps +/- 100ppm frequency accura...