82P33814ANLG

Overview

The Renesas 82P33814ANLG is a Synchronization Management Unit (SMU) designed for IEEE 1588/PTP and Synchronous Ethernet applications. It features three Digital PLLs (DPLLs), where DPLL1 and DPLL2 can operate as Digitally Controlled Oscillators (DCOs) for PTP synthesis, while DPLL3 handles rate conversion. The device accepts differential inputs (IN1-IN4) from 1 PPS to 650 MHz and single-ended inputs (IN5-IN6) up to 162.5 MHz. It supports ITU-T G.8262/G.813, G.8273.2, and GR-253-CORE standards. Outputs include LVDS clocks up to 650 MHz and CMOS outputs up to 125 MHz or N*8 kHz multiples up to 100 MHz. Configuration is managed via I2C, SPI, or UART, with automatic EEPROM loading.

Feature Summary

• Supports independent IEEE 1588 and SyncE timing paths with Combo mode for Telecom Boundary Clocks
• Three DPLLs: DPLL1/2 configurable as DCOs for PTP; DPLL3 for general frequency translation
• Compliant with ITU-T G.8262, G.813, G.8273.2, and Telcordia GR-253-CORE Stratum 3
• Automatic reference selection based on priority tables, LOS, and frequency monitors

Applications

• IEEE 1588 / PTP Telecom Profile clock synthesizer
• ITU-T G.8273.2 Telecom Boundary Clock (T-BC) and Telecom Time Slave Clock (T-TSC)
• Carrier Ethernet switches and access routers
• LTE eNodeB base stations
• PON and OTN equipment

Procurement Notes

Verify the manufacturer origin, as the datasheet copyright indicates Integrated Device Technology, Inc., which was acquired by Renesas Electronics Corporation. Confirm the specific 'ANLG' suffix requirements against the official ordering guide to ensure correct package and temperature grade specifications. Check for current production status and end-of-life notices.

Selection Notes

Select this component when precise management of both packet-based (PTP) and physical layer (SyncE) timing is required on a single chip. Ensure the system clock frequency matches one of the supported TCXO/OCXO options (e.g., 10 MHz, 25 MHz). Verify that the input reference frequencies fall within the 1 PPS to 650 MHz range for differential inputs. Consider the 72-pin QFN package constraints for PCB layout.

Part Context

This device belongs to the Synchronization Management Unit family, bridging legacy TDM/SyncE timing with modern packet-based synchronization. It serves as a central timing hub in carrier networks, replacing separate clock generators and PTP processors. The transition from IDT to Renesas maintains the functional architecture but may affect supply chain documentation.

Replacement Considerations

Check for direct pin-compatible successors in the Renesas 82P series. Evaluate newer SMU devices with higher output counts or integrated PHYs if network speeds exceed 10G. Verify software register compatibility if migrating from existing IDT designs.