SI50122-A2-GM Silicon Labs

Si50122-A1/A2 CRYSTAL-LESS PCI-EXPRESS GEN1 DUAL OUTPUT CLOCK GENERATOR Features Crystal-less clock generator with Triangular spread spectrum integrated CMEMS profile for maximum EMI PCI-Express Gen 1 compliant reduction (Si50122-A2) Two PCIe 100 MHz differential HCSL Industrial Temperature 40 to 85 C outputs 2.5 V, 3.3 V Power supply One 25 MHz single-ended LVCMOS Small package 10-pin TDFN output (2.0 x 2.5 mm) Supports Serial (ATA) at 100 MHz Si50122-A1 does not support spread spectrum outputs Low power differential output buffers Ordering Information: Si50122-A2 supports 0.5% No termination resistors required for See page 10 differential output clocks down spread outputs Applications Pin Assignments Network Attached Storage Solid State Drives (SSD) Si50122-A1/A2 Multi-function Printer Wireless Access Point Digital TV Home Gateway VSS 1 10 VDD Set top box Digital Video Camera REFOUT 2 9 VDD Description NC 3 8 DIFF2 Si50122-A1/A2 is a high-performance, crystal-less PCIe clock generator that can DIFF1 4 7 DIFF2 generate two 100 MHz PCIe clock and one 25 MHz LVCMOS clock outputs. The differential clock outputs are compliant to PCIe Gen1 specifications. The ultra- 5 DIFF1 6 VSS small footprint (2.0 x 2.5 mm) and industry leading low-power consumption makes Si50122-A1/A2 the ideal clock solution for consumer and embedded applications where board space is limited and low power is needed. Patents pending Functional Block Diagram VDD REFOUT DIFF1 PLL Divider CMEMS (SSC) DIFF2 VSS Rev 0.7 9/14 Copyright 2014 by Silicon Laboratories Si50122-A1/A2Si50122-A1/A2 2 Rev 0.7