Brite provides a complete DDR subsystem including not only controller, PHY and IO, but also corresponding tuning and configuration software. And this solution can support LPDDR2, DDR3, LPDDR3, DDR4 and LPDDR4 combo PHY with the data rate from 667Mbps to 2933Mbps. YouPHY-DDR is developed on 130um to 28nm process respectively and delivers an unbeatable combination of DDR high speed and low power performance. With patented dynamic self-calibrating logic (DSCL) and dynamic adaptive bit calibration (DABC) technology, YouPHY-DDR can automatically compensate chip/package/board/memory PVT variation and bit-bit skew. YouPHY-DDR delivers the highest DDR performance, the smallest area and the shortest time-to-market.


Key DDR Subsystem Features


DDR Controller

  • Highly flexible and customizable DFI 2.1 compliant DDR controller architecture

  • Supports up to 32 target interfaces including AXI, AHB and FIFO-based interfaces

  • User-customizable arbiter (scheduler)


DDR PHY

  • Comprehensive DDR protocol training

● CA training

● DQ read training

DQ write training

Write leveling

Vref training

  • PHY is DFI 3.1 compatible and backwards-compatible to earlier DFI standards for simplified integration with existing DFI-compliant Controllers

  • PHY includes DSCL technology

Automatically compensates for DDR interface timing due to static (process-related) variations and dynamic variations due to operating temperature, voltage, and data patterns

  • PHY includes DABC technology

Automatically compensates for bit-bit skew within each byte lane

  • Flexible, rectilinear PHY layout offers industry’s smallest PHY area and is hardened to match IO pad frame

  • DSCL delivers lowest PHY latency of 0.5 – 1 clock cycles

  • PHY (and optionally IO) configured as drop-in hard macro for easy implementation

  • Fast and simple system bring-up via DSCL hardware routine

  • Improved long term system reliability

  • Combo PHY options include:

DDR2/DDR3 PHY Combo

LPDDR2/DDR3 PHY Combo

LPDDR2/LPDDR3/DDR3 PHY Combo

DDR3/DDR4 PHY Combo

LPDDR3/4 + DDR3 PHY Combo