MK1491-06S

MK1491-06S Features

DATASHEET

MK1491-06S Description

MK1491-06S Pin Description

MK1491-06S Pin Description

TI/O14.318 MHz output and audio frequency select input per table above.IIIIIPOI/OI/OOOOPCI normal or slow mode select input per table on page 4.Frequency Select for PCI clocks per table above.Fixed frequency select input per table above. Selects frequency on pin19.Power down control; defined in table on page 4.PCI Stop power down control; defined in table on page 4.Connect to +3.3 V. Must be same voltage on all pins.Fixed frequency clock output per table above.Fixed frequency clock output and low EMI (spread spectrum) enableinput per table above.PCI Output clock that can be early. Input control for Early PCI per tableabove.PCI Output clock. PCI/PCIF control set by PEN per table above.PCI Output clock. PCI/PCIF control set by PEN per table above.PCI Output clock.TI/OAudio clock output and PCIF Function Enable per table above.8101213151614.3M (SELAUDIO)SLOW#FSSEL24PWRDWN#PCISTP#18, 20, 26VDD1921222425272824M/14.3M48 (LE#)PCI (EPCI#)PCIPCIPCIAC97 AUDIO(PEN)KEY:I = InputTI = Tri-levelO = OutputP = Power supply connection(T)I/O = Input on power up, becomes an Output after 10 msWeak internal pull-up resistors are present on SEL24, EPCI#, FS, LE#, PCISTP#, and SLOW#. These pins shouldbe tied to VDD or GND, and not be left floating. Internal resistors on PEN, SEL AUDIO, and TS pull to mid-level (M).