9FG830AGLFT

9FG830AGLFT Output Features:

•8 - 0.7V current mode differential HCSL output pairs •1 - 3.3V LVTTL REF output

9FG830AGLFT General Description:

The 9FG830 is a Frequency Timing Generator that provides 8HCSL differential output pairs. These outputs support PCI-ExpressGen3, and QPI applications. The part supports Spread Spectrumand synthesizes several additional output frequencies from eithera 14.31818 MHz crystal, a 25 MHz crystal or reference input clock.The 9FG830 also outputs a copy of the reference clock. Completecontrol of the device is available via strapping pins or via theSMBus interface.

9FG830AGLFT Description

9FG830AGLFT Pin Description

9FG830AGLFT Pin Description

PIN #PIN NAMEPIN TYPEDESCRIPTION1XIN/CLKININCrystal input or Reference Clock input2X2OUTCrystal output, Nominally 14.318MHz3VDDPWRPower supply, nominal 3.3V4GNDPWRGround pin.5REFOUTOUTReference Clock output6vFS2INFrequency select pin. This pin has an internal 120k pull down resistor7vOE_7INActive high input for enabling output 7. This pin has a 120kohm pull down.0 =disable outputs, 1= enable outputs8DIF_7OUT0.7V differential true clock output9DIF_7#OUT0.7V differential Complementary clock output10VDDPWRPower supply, nominal 3.3V11DIF_6OUT0.7V differential true clock output12DIF_6#OUT0.7V differential Complementary clock output13^OE_6INActive high input for enabling output 6. This pin has an internal 120kohm pull up.0 = disable outputs, 1= enable outputs14VDDPWRPower supply, nominal 3.3V15GNDPWRGround pin.16^OE_5INActive high input for enabling output 5. This pin has an internal 120kohm pull up.0 = disable outputs, 1= enable outputs17DIF_5OUT0.7V differential true clock output18DIF_5#OUT0.7V differential Complementary clock output19VDDPWRPower supply, nominal 3.3V20DIF_4OUT0.7V differential true clock output21DIF_4#OUT0.7V differential Complementary clock output22vOE_4INActive high input for enabling output 4. This pin as an internal 120kohm pull down.0 =disable outputs, 1= enable outputs23SDATAI/OData pin for SMBus circuitry, 5V tolerant.24SCLKINClock pin of SMBus circuitry, 5V tolerant.25DIF_STOP#INActive low input to stop differential output clocks.26vSPREADINAsynchronous, active high input to enable spread spectrum functionality. This pin hasa 120Kohm pull down resistor.27^SEL14M_25M#INSelect 14.31818 MHz or 25 Mhz input frequency. This pin has an internal 120kohmpull up resistor.1 = 14.31818 MHz, 0 = 25 MHz28vOE_3INActive high input for enabling output 3. This pin has an internal 120kohm pull downresistor.0 =disable outputs, 1= enable outputs29DIF_3#OUT0.7V differential Complementary clock output30DIF_3OUT0.7V differential true clock output