Design DocumentNxp

USB-ML-PPCNEXUS PowerPC Nexus Multilink Technical Summary

Technical summary for the USB-ML-PPCNEXUS, a USB 2.0 hardware interface for debugging and programming NXP PowerPC MPC55xx processors via JTAG/Nexus ports.

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Overview

The USB-ML-PPCNEXUS is a high-speed USB 2.0 hardware interface designed by P&E Microcomputer Systems for NXP (Freescale) PowerPC MPC55xx processors. It serves as the bridge between a PC's USB port and the standard 14-pin JTAG/Nexus debug connector on the target hardware. The device supports target processor supplies ranging from 1.8V to 5.25V and features dual LED indicators for power status and target detection. It enables full control over the processor, including halting execution, reading/writing registers, debugging code, and programming internal or external flash memory. The interface is compatible with various software suites such as ICDPPCNEXUS for debugging and PROGPPCNEXUS for automated flash programming.

Use Cases

Source-level debugging of NXP MPC55xx microcontrollers.
Interactive or automated flash programming for production and development.
Direct hardware control and register access for embedded systems development.
Custom application development using DLL-based interface libraries.

Topics

USB-ML-PPCNEXUS

PowerPC

MPC55xx

JTAG

Nexus Interface

NXP

Freescale

P&E Microcomputer Systems

Debug Probe

Flash Programmer

14-pin Berg connector

Referenced Parts

USB-ML-PPCNEXUS

P&E Microcomputer Systems

USB-ML-PPCNEXUS, PowerPC Nexus Multilink Rev. A (USB 2.0)

MPC55xx

NXP

provides access to the JTAG/Nexus port on Freescale PowerPC MPC55xx processors

CABLEPPCNEXUS

P&E Microcomputer Systems

P&E produces the Parallel Port CABLEPPCNEXUS which connects the parallel port of the PC to the 14-pin debug connector on the target.

USB-ML-PPCNEXUS	P&E Microcomputer Systems	USB-ML-PPCNEXUS, PowerPC Nexus Multilink Rev. A (USB 2.0)
MPC55xx	NXP	provides access to the JTAG/Nexus port on Freescale PowerPC MPC55xx processors
CABLEPPCNEXUS	P&E Microcomputer Systems	P&E produces the Parallel Port CABLEPPCNEXUS which connects the parallel port of the PC to the 14-pin debug connector on the target.