932SQL456

Low-Power CK420BQ Derivative for PCIe Separate Clock Architectures 932SQL456 DATASHEET General Description The 932SQL456 is a low power version of the CK420BQ synthesizer for Intel-based server platforms. It has 85 ohm Low-Power (LP) HCSL outputs that save 48 resistors and reduce power consumption by 50% compared to the standard CK420BQ. The 932SQL456 is driven with a 25MHz crystal for maximum performance. It generates CPU outputs of 100MHz. This device meets Separate- Reference-no-Spread (SRnS) PCIe requirements making it ideal for use in systems that need to communicate “outside the box”. Recommended Application Low-Power CK420BQ for SRnS PCIe Applications Key Specifications CPU, SRC, NS_SRC and NS_SAS cycle-cycle jitter <50ps Output to output skew <50ps Phase jitter: PCIe Gen2 SRnS <2.2ps rms Phase jitter: PCIe Gen3 SRnS <0.7ps rms Phase jitter: QPI <0.3ps rms Phase jitter: NS-SAS <1.3ps rms using long period phase jitter method Pin Configurations Features/Benefits Integrated 85-ohm differential terminations; saves 48 resistors compared to CK420BQ LP-HCSL outputs; up to 50% power savings compared to standard CK420BQ 64-pin TSSOP and VFQFPN packages; smallest board footprint Available in -40° to +85°C industrial temperature range version; supports demanding operating environments Output Features Differential outputs are LP-HCSL with integrated 85 terminations 11 – non-spreading interchangeable 100MHz differential outputs 4 – “CPU” outputs 2 –...