932SQL450中文资料Low-Power CK420BQ Derivative for PCIe Common Clock Architectures数据手册Renesas规格书

描述 Description

The 932SQL450 is a low power version of the CK420BQ synthesizer for Intel-based server platforms. It has 85-ohm LP-HCSL outputs allowing for direct connection to 85-ohm transmission lines. The 932SQL450 is driven with a 25MHz crystal for maximum performance. It generates CPU outputs of 100MHz. This device has a “low-drift” non-spread SAS/SRC PLL for use in systems that need to communicate across PCIe domains.

特性 Features

• Integrated 85 ohm differential terminations; saves 48 resistors and 82mm² area
• LP-HCSL output drivers; 40% typical power savings over 932SQ420
• 0.5% down spread capable on CPU, SRC and PCI outputs; reduce EMI
• Additional down spread amounts selectable via SMBus; maximal system flexibility
• 64-pin TSSOP and VFQFPN packages; smallest board footprint
• CPU, SRC, NS_SRC and NS_SAS cycle-cycle jitter <50ps
• Output to output skew <50ps
• Phase jitter: PCIe Gen2 <2.5ps rms
• Phase jitter: PCIe Gen3 <0.6ps rms
• Phase jitter: QPI <0.3ps rms
• Phase jitter: NS-SAS <1.3ps rms using long period phase jitter method