TSMC CLN4P 4nm LPDDR5 PHY - 6400Mbps

Overview

The TCI LPDDR PHY is a high-performance, scalable system using a radically new architecture that continuously and automatically adjusts each pin individually, correcting skew within byte lanes. This state-of-the-art tuning acts independently on each pin, data phase and chip select value. Read gate and data eye timing are also continuously adjusted. Automatic training is included for multi-cycle write leveling and read gate timing, read/write data eye timing, and PHY Vref and DRAM Vref settings. Remarkable physical flexibility allows the PHY to adapt to each customer’s die floorplan and package constraints, yet is delivered and verified as a single unit for easy timing closure with no assembly required. The PHY is DFI 5.1 compliant, and when combined with an appropriate LPDDR memory controller, a complete and fully-automatic LPDDR system is realized.

Key Features

Supports LPDDR5
DFI 5.1 compliant
Supports x4, x8 and x16 DRAMs
Up to 72 bits wide and up to 4 ranks
Includes PLL, with frequency multiplication from low frequency reference
Per pin architecture automatically corrects skew, increases data eye and eliminates most parallel interface problems
Fully automatic training is managed by a light weight special purpose processor
Continuous adjustment of read gate and data eye timing
Localized and optimized PHY-to-memory controller interface to ease timing closure
Full speed read/write BIST with pseudo-random data, mux-scan ATPG and 1149.1 Boundary Scan

Benefits

Automatic Deskew - Skew among pins is automatically corrected; intentional skew can reduce SSO
Tuning - State-of-the-art tuning is the key to a high performance DDR system
Complete PHY - Completely assembled and validated hard PHY and I/O ring means no assembly is required and performance is guaranteed
Compatible - DFI 5.1 compliance and PHY independent training allows for compatibility with a variety of memory controllers
Flexibility - Proprietary tools generate and validate a PHY fitted to the customer’s die floorplan and package
Timing Closure - Memory controller to PHY timing closure is simplified by a localized synchronous interface
Instrumentation - PHY resources can measure data eye and jitter per pin, speeding up board bring-up

Block Diagram

Deliverables

GDSII and LVS Spice netlist, behavioral, synthesis and LEF models for hard macros
RTL code and SDC constraints for soft logic
IBIS and Spice models for RDL, package and PCB simulations
Extensive user documentation
Integration support to ensure a successful tapeout

Technical Specifications

Foundry, Node

TSMC LPCLN4P

Availability

Yes

TSMC

Pre-Silicon: 4nm

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