9DBL PCIe Zero-Delay Buffers Renesas Electronics 9DBL PCIe Zero-Delay Buffers are 3.3V devices that support PCIe Gen1-4 Common Clocked (CC) systems. The 9DBL also supports PCIe Gen2 Separate Reference Independent Spread (SRIS) systems. The buffers provide a direct connection to 85Ω or 100Ω transmission lines with a choice of integrated output terminations. Renesas Electronics 9DBL PCIe Zero-Delay Buffers can be factory programmed with a user-defined power-up default SMBus configuration.