Renesas Electronics 9SQL4954C
The 9SQL4952/9SQL4954/9SQL4958 devices comprise a family of 3.3V PCIe Gen1–5 clock generators with UPI support.DESCRIPTION
There are 2, 4 and 8 outputs versions available and each differential output has a dedicated OE# pin supporting PCIe CLKREQ# functionality. PCIe Clocking Architectures● Common Clocked (CC)
● Independent Reference (IR) with and without spread spectrum (SRIS, SRNS) Typical
APPLICATIONS
● Servers/High-Performance Computing● nVME Storage
● Networking
● Accelerators
● Industrial Control Key Specifications
● 90fs RMS typical jitter (PCIe Gen5 CC)
● 70fs RMS typical jitter (QPI ≤ 11.4Gb/s, 12UI)
● < 50ps cycle-to-cycle jitter on differential outputs
● < 50ps output-to-output skew on differential outputs
● ±0ppm synthesis error on differential outputs
FEATURES
● Integrated terminations for 85Ω systems save 4 resistors per output● 112–206 mW typical power consumption (at 3.3V)
● VDDIO rail allows 35% power savings at optional 1.05V (9SQL4958 only)
● Devices contain default configuration; SMBus not required
● SMBus features allow optimization to application:
● Input polarity and p...