LPDDR4/4x/5/5x PHY

Overview

The DDR PHY is designed to support LPDDR4, LPDDR4x and LPDDR5 SDRAM.

This allows the host SoC to easily be configured for the specific DDR SDRAM variant used in the system via simple software control, allowing one chip to target multiple applications using different DDR types.

The DDR PHY has been optimized to take advantage of the memory configurations and packaging to reduce the total memory subsystem power and area.

The DDR PHY is designed to comply with DFI 5.1 memory standard so the PHY can work seamlessly with DDR Memory controllers from any supplier that compliant with the DFI 5.1 Standard.

Key Features

Operating range 533 – 8,533 Mbps LPDDR4/LPDDR4x/LPDDR5/LPDDR5x mode
DFI 1:2 and DFI 1:4 clocking support
- 1:2 DFI_CLK = 1,066 MHz
- LPDDR4/4x/5/5x – 4,266 Mbps
- 1:4 DFI_CLK = 533 MHz
- LPDDR4/4x/5/5x – 4,266 Mbps
- 1:4 DFI_CLK = 800 MHz
- LPDDR5 – 6,400 Mbps
- 1:4 DFI_CLK = 1,066 MHz
- LPDDR5 – 8,533 Mbps
PHY includes PVT compensated I/Os that are compatible with wire bond and flip chip (ESD included)
Small PHY area – (tbd)mm2
Low power – (tbd)/(tbd)/(tbd) mW (READ, WRITE, and IDLE)
Configurable external memory channel widths in 16-bit, 32-bit and 64-bit
Programmable I/O output drive strength and On Die Termination (ODT) impedance with dynamic PVT compensation
Support for Per Bit Deskew
At speed Internal and External Loopback BIST testing in PHY Standalone mode for Chip Probe Testing on DQ/DQS
Scan and JTAG/BSR standard testing
AHB Register interface for easy PHY configuration and control for non-DFI related features
Low power stand by using DFI Compliant LP interface
DATA Retention
PHY Independent DDR Training, Dynamic training and DDR Initialization Support using embedded memory controller and 32-bit processor
- CA Training
- Write Leveling
- Read Gate Training
- Read EYE training EYE Scan and Bit Deskew
- READ EYE DFE
- Write EYE Training EYE Scan and Bit Deskew
- WRITE EYE DFE
- CK and WCK Duty Cycle Training
- READ DQS Duty Cycle Training
- READ and WRITE OSC Training
- READ and WRITE Offset Calibration
- READ and WRITE PreEmphasis Calibration

Block Diagram

Deliverables

Databook
User Guide
Behavioral RTL model
LEF file
.LIB file
GDSII Layout Database
CDL
SCAN and JTAG Vectors
IBIS Models for PCB Design and verification

Technical Specifications

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