PI6C49003

PI6C49003 Networking Clock Generator Features 3.3V +/-10% Supply Voltage Uses 25MHz xtal such as Saronix-eCera™ SRX7278 Five PCIe® 100MHz outputs with optional -0.5% spread spectrum support Two LVCMOS 50MHz outputs that support +/- 10% frequency margining One frequency selectable 33/66/133MHz LVCMOS output One 32.256MHz LVCMOS output Industrial temperature -40°C to 85°C Package: 48-pin TSSOP package Description The PI6C49003 is a clock generator device intended for PCIe®/ networking applications. The device includes five 100MHz differential Host Clock Signal Level (HCSL) outputs for PCIe, two single-ended 50 MHz outputs, one single-ended 32.256MHz output, and one selectable single-ended 33/66/133 MHz output. Using a serially programmable SMBUS interface, the PI6C49003 incorporates spread spectrum modulation on the five 100 MHz HCSL PCIe outputs, and independent frequency margining on the 50MHz output, 33.3333MHz and 66.6666MHz clock outputs. Pin Configuration Block Diagram 25 MHz crystal or clock input Clock Buffer/ Crystal Oscillator VDD 14 SCLK SDATA PD_RESET PLL, Dividers, Buffers, and Logic 5 100M_OUT(0-4) 50M_OUT(1-2) 33/66/133M_OUT1 32.256M_OUT1 10 GND ISET 475 Ohms 1% VDD IREF NC NC VDD VDD GND GND VDD GND VDD SCLK SDATA GND 50M_Out1 50M_Out2 VDD GND VDD 32.256M_Out1 GND NC NC PD_RESET 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 09-0097 1 48 GND 47 VDD 46 100M_Q045 100M_Q0+ 44 100M_Q1+ 43 100M_Q142 VDD 41 GND 40 VDD 39 1...