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CDC960DL Datenblatt(PDF) 3 Page - Texas Instruments |
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CDC960DL Datenblatt(HTML) 3 Page - Texas Instruments |
3 / 10 page CDC960 200MHz CLOCK SYNTHESIZER/DRIVER WITH SPREAD SPECTRUM CAPABILITY AND DEVICE CONTROL INTERFACE SCAS675 – APRIL 2002 3 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 FUNCTION TABLES (Continued) SPREAD SPECTRUM INPUT Spread 0 Spread spectrum disabled Spread 1 Spread spectrum enabled, –0.5% at CPU/CPU, PCI/LDT, PCI_F, PCI DEVICE ENABLE FUNCTIONS SMBus CONTROLLED INPUTS OUTPUTS INTERNAL L L X X X X L L L X Xtal Hi-Z Hi-Z Hi-Z Hi-Z Hi-Z Hi-Z Hi-Z Hi-Z Off Off L XX H H H H X X X Xtal ↑↓ ↑↓ ↑↓ ↑↓ ↑↓ ↑↓ ↑↓ ↑↓ ↑↓ ↑↓ L XX H H L H X X X Xtal ↑↓ ↑↓ ↑↓ LL ↑↓ ↑↓ ↑↓ ↑↓ ↑↓ L XX H L H H X X X Xtal ↑↓ ↑↓ ↑↓ ↑↓ ↑↓ ↑↓ ↑↓ ↑↓ ↑↓ ↑↓ L XX H L L H X X X Xtal ↑↓ ↑↓ ↑↓ LL ↑↓ ↑↓ ↑↓ ↑↓ ↑↓ L XX L H H H X X X Xtal ↑↓ ↑↓ ↑↓ ↑↓ ↑↓ ↑↓ ↑↓ ↑↓ ↑↓ ↑↓ L XX L H L H X X X Xtal ↑↓ ↑↓ ↑↓ L ↑↓ ↑↓ ↑↓ ↑↓ ↑↓ ↑↓ L XX L L H H X X X Xtal ↑↓ ↑↓ ↑↓ ↑↓ L ↑↓ ↑↓ ↑↓ ↑↓ ↑↓ L XX L L L H X X X Xtal ↑↓ ↑↓ ↑↓ LL ↑↓ ↑↓ ↑↓ ↑↓ ↑↓ L L X X X H L L H X H H L HL HL HL L L L Off Off L LX HX H L L H X L L H HLHLHL L L L Off Off L LX HH L L L H X L L H HL LLLLL Off Off L LX LL H L L H X H H L HL HL LLLL Off Off L LX LH L L L H X L L H HL L HL LLL Off Off L LX HH L L H X X H H LHL L LHL HL HL Off Off L LX HH L L H X X L L H HL L L HLHLHL Off Off L LX HL H L H X X H H L HLHLHLHLHLHL Off Off L LX HL H L H X X L L H HLHLHLHLHLHL Off Off L LX L H L L H X X L/H L/H H/L HL L HLHLHLHL Off Off L LX L L H L H X X L/H L/H H/L HL HL L HL HL HL Off Off L L X L L L L H X X L/H L/H H/L HL L L HL HL HL Off Off † SMBus bits set to their reset values ‡ Hi-Z will have LOW state if external load circuit is applied, CPU and CPU are push-pull type outputs. ↑↓ Outputs toggle at the selected frequency according to the Device Frequency Select FunctionS table above. HL device output state is undefined, either L or H. It is L if Xin is held static at L or H before the bypass mode is selected. OUTPUT BUFFER SPECIFICATIONS BUFFER NAME VDD RANGE (V) IMPEDANCE ( Ω) LUMPED TEST LOAD CPU 3.135 – 3.465 40 10 pF PCI, PCI_F, LDT 3.135 – 3.465 25 30 pF REF, USB, FDC 3.135 – 3.465 35 20 pF |
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