Datasheet
RC310xxA
VersaClock 7 Programmable Jitter Attenuator Family
The RC310xxA (RC31008A and RC31012A) are
high-performance programmable jitter attenuators
with network synchronization capabilities. The
devices support JEDEC JESD204B/C for converter
synchronization, and SyncE for network-based
synchronization.
▪ RC31012A – 12 differential/24 single-ended
outputs
• 6 × 6 × 0.9 mm 48-QFN package
▪ RC31008A – 8 differential/16 single-ended outputs
• 5 × 5 × 0.9 mm 40-QFN package with optional
integrated crystal
The RC310xxA devices ideal for driving converter
circuits in wire-line infrastructure, data center
equipment, and instrumentation applications.
Switch ASIC
SyncE RX Clk
Uplink PHY
Eth
Downlink PHY
Eth
Controller
PCIe, etc.
Applications
▪ Switches / Routers
SyncE TX Clk
Eth+FEC Clk
▪ Synchronous Ethernet (SyncE) equipment
▪ Telecom Time Slave Clock (T-TSC) equipment
RC31xxxA
Freq Domain
Eth+FEC
▪ Jitter attenuation for 10 / 25 / 40 / 100 / 200 / 400
Gbps Ethernet PHYs or Switches
Freq Domain
SyncE
DPLL
PCIe, etc.
Freq Domain
Miscellaneous
▪ Small Cell for 4.5G and 5G
Features
▪ 169fs RMS typical phase jitter
▪ PCIe® Gen6 Common Clock (CC) 27fs RMS
Figure 1. Typical Wire-line Infrastructure Use Case
▪ Compliant with ITU-T G.8262 and G.8262.1 for
synchronous Ethernet Equipment Clock
(EEC/eEEC)
▪ Jitter attenuation with programmable loop
bandwidth from 0.1Hz to 12kHz
▪ 1kHz to 650MHz LVDS/LP-HCSL outputs
▪ 1kHz to 200MHz LVCMOS outputs
▪ Simple AC-coupling to LVPECL and CML
▪ Integrated 100 and 85 LP-HCSL terminations
▪ JESD204B/C support on differential or single-
ended outputs with DC-coupling or AC-coupling
▪ Up to four single-ended or two differential clock
inputs; one crystal/TCXO/OCXO input
▪ Programmable General Purpose Inputs (GPI × 4)
and General Purpose Input/Outputs (GPIO × 5)
▪ 1MHz I2C, 400kHz SMBus, or 20MHz SPI support
Configuration via internal One-Time Programmable
(OTP) memory (up to 27 different configurations),
serial interface, or external I2C EEPROM.
▪ Factory programmable internal OTP
▪ 1.8V, 2.5V, 3.3V, -40° to +85°C operation
R31DS0010EU0109 Rev.1.09
Oct 27, 2023
Page 1
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