Macraigor Systems JTAG/BDM Catalogue

Macraigor Systems LLC

More about Macraigor Systems LLC

Macraigor Systems LLC is a company specializing in embedded systems development tools, particularly hardware debug and programming solutions for microprocessors and microcontrollers. They are known for their OCDemon product line, which includes JTAG debuggers and emulators. Macraigor provides tools and software that support various processor architectures, enabling engineers to efficiently debug and program embedded systems.

JTAG and BDM debug interfaces: usb2Demon, Raven and Wiggler

Macraigor Systems makes JTAG and BDM hardware debug interfaces: the usb2Demon, Raven and Wiggler families, plus the OCDemon software that drives them. An interface connects a PC to the on-chip debug port of a target processor, so an engineer can halt the CPU, read and write registers and memory, set breakpoints and program flash without a ROM monitor or code running on the target. The interfaces work with free Macraigor tools and GNU GDB, and with third-party debuggers.

How a Macraigor debug chain works

A Macraigor interface sits between the debugger on your PC and the on-chip debug (OCD) port of the target processor. The debugger, either Macraigor's OCD Commander or GNU GDB in an IDE such as Eclipse, talks to the interface through the OCDemon technology. For GDB and Eclipse, OCDRemote provides the interface between the debugger and the Macraigor device. The interface then drives the target's JTAG or BDM header.

The debugger never talks to the processor directly: OCDRemote and the interface translate its commands into JTAG or BDM signals.

What JTAG debug does: the scan chain

JTAG (IEEE 1149.1) gives a debug tool access to a processor through four signals: TCK (clock), TMS (mode select), TDI (data in) and TDO (data out). Devices on a board are daisy-chained: the interface's TDI feeds the first device, each TDO feeds the next TDI, and the last TDO returns to the interface, while TCK and TMS are shared by all. The usb2Demon can debug up to 255 devices on a single scan chain, and up to 16 usb2Demons can be connected to one host PC.

Data shifts through every device in turn, so one interface can reach each processor on the chain.

Macraigor interface families at a glance

Model	Family	Target connection	Host connection	Key figures
U2D-Atom-24 usb2Demon	usb2Demon	24-pin Atom	USB	JTAG clock to 20 MHz; 2.2 to 5.0 V target; USB powered
U2D-Atom-31 usb2Demon	usb2Demon	31-pin Atom	USB	JTAG clock to 20 MHz; 2.2 to 5.0 V target; USB powered
U2D-COP usb2Demon	usb2Demon	COP (PowerPC)	USB	JTAG clock to 20 MHz; 2.2 to 5.0 V target; USB powered
Raven for MIPS	Raven	MIPS	Parallel port	Mains adapter supplied
Raven for OnCE	Raven	OnCE	Parallel port	See product page
Raven for TX49	Raven	TX49	Parallel port	See product page
Wiggler for AMCC	Wiggler	AMCC	Parallel port	JTAG clock about 60 to 380 kHz
Wiggler for COP	Wiggler	COP (PowerPC)	Parallel port	JTAG clock about 60 to 380 kHz
WiFiDemon for MIPS	WiFiDemon	MIPS	See product page	See product page

The catalogue also lists adapters and accessories: the Cortex JTAG Adapter, which lets a 20-pin ARM interface connect to an ARM Cortex SWD 2-wire interface, the Intel/Marvel JTAG Adapter, the JScan Boundary Scan Kit and a Replacement Programmed PAL for WBDM8XX. Other variants, such as the ARM, ColdFire, MIPS and XScale versions of the usb2Demon, are listed as archived and are no longer sold.

usb2Demon, Raven or Wiggler: which interface?

The usb2Demon is the fast, USB-powered choice, the Raven and Wiggler are older parallel-port devices. The usb2Demon connects by USB 1.1 or USB 2.0, takes its power from USB, supports configurable JTAG/BDM clock rates up to 20 MHz and automatically matches target voltages from 2.2 V to 5.0 V. Macraigor describes it as significantly faster than a Raven. The Raven connects through the PC parallel port and is powered from a mains adapter. The Wiggler also connects to the parallel port, supports JTAG clock rates between about 60 kHz and 380 kHz, and can be powered from an external 5 V supply, from the parallel port, or partly from the target. Because both older devices need a parallel port, the usb2Demon suits modern PCs.

Supported processor architectures

usb2Demon: Macraigor lists AMD, ARM, Atom, ColdFire, CPU32 series, PowerPC, MIPS and XScale, from vendors including AMCC, Broadcom, Freescale, IBM, Intel, Microchip, Phillips, Qualcomm, Sharp and TI.
Target ports: JTAG, E-JTAG, OnCE, COP and BDM on-chip debug interfaces.
Wiggler: ARM, PowerPC, MIPS, AMD and Intel XScale among others, according to the Wiggler datasheet.
Intel Atom: OCDemon for the Atom covers hardware initialisation and debug, plus kernel, driver and application debug over JTAG.

Support depends on the connector variant, so choose the model that matches your target's debug header (for example the 24-pin or 31-pin Atom, or COP).

Software and tools

OCD Commander: Macraigor's free debugger and diagnostic tool for Windows and Linux.
OCDRemote: provides the interface between GDB or Eclipse and a Macraigor on-chip debug device.
GNU tools and GDB: Macraigor distributes free GNU toolkit builds (gcc, gas and gdb) with embedded OCDemon support, and has published guides for using its devices with Eclipse on Windows and Linux.
OCD Flash Programmer: a flash programming application for use with the interfaces.
Third-party debuggers: the usb2Demon is documented as compatible with debuggers from vendors such as Green Hills, IAR Systems, Metrowerks and Mentor Graphics.

Some of our Macraigor listings are hardware only: where a product page says the software is no longer available from the manufacturer, only the part is supplied.

Typical applications

Board bring-up and hardware initialisation on ARM, MIPS, PowerPC and Intel Atom targets with a usb2Demon
Source-level debug of Linux kernels, drivers and applications through GDB and Eclipse
Programming flash memory on target boards during development and production test
Supporting existing parallel-port setups with a Raven or Wiggler
Checking and driving board pins through boundary scan with the JScan Boundary Scan Kit

Frequently asked questions

What is the difference between the usb2Demon, Raven and Wiggler?

The usb2Demon connects by USB, is powered from USB and clocks JTAG up to 20 MHz. The Raven and Wiggler connect to the PC parallel port; the Wiggler runs JTAG at about 60 to 380 kHz.

Which target voltages does the usb2Demon support?

Its target-side buffers are powered by the target, so it matches target voltages from 2.2 V to 5.0 V automatically.

Can I use GDB and Eclipse with a Macraigor interface?

Yes. Macraigor supplies GNU tools with OCDemon support and OCDRemote, which links GDB or Eclipse to the Macraigor device. Guides for Eclipse on Windows and Linux are published by Macraigor.

How many devices can be debugged on one scan chain?

The usb2Demon can debug up to 255 devices on a single scan chain, and up to 16 usb2Demons can be connected to one host machine.

Which model should I choose for my processor?

Match the interface to your target's debug header. For Intel Atom boards choose the 24-pin or 31-pin usb2Demon, and for PowerPC COP targets the U2D-COP. If you are unsure, ask our engineers.

Is software included with every product?

Not always. Macraigor's debugger and GNU tools are free to download, but some listings state that the manufacturer no longer supplies software with that part, so check the product page.

Source: Macraigor Systems LLC product documentation. Need help choosing a model? Ask our engineers.

Macraigor Cortex JTAG Adapter

Macraigor Cortex JTAG Adapter

Vendor:
Macraigor Systems, LLC

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Macraigor Intel/Marvel JTAG Adapter

Macraigor Intel/Marvel JTAG Adapter

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Macraigor Systems, LLC

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€89,95 exc VAT

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Macraigor JScan Boundary Scan Kit

Macraigor JScan Boundary Scan Kit

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Macraigor Systems, LLC

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Macraigor Raven JTAG/BDM Interface for MIPS

Macraigor Raven JTAG/BDM Interface for MIPS

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Macraigor Systems, LLC

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Macraigor Raven JTAG/BDM Interface for OnCE

Macraigor Raven JTAG/BDM Interface for OnCE

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Macraigor Systems, LLC

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Macraigor Raven JTAG/BDM Interface for TX49

Macraigor Raven JTAG/BDM Interface for TX49

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Macraigor Systems, LLC

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Macraigor Replacement Programmed PAL for WBDM8XX

Macraigor Replacement Programmed PAL for WBDM8XX

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Macraigor U2D-Atom-24 USB2Demon USB to 24-pin Atom

Macraigor U2D-Atom-24 USB2Demon USB to 24-pin Atom

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Macraigor Systems, LLC

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Macraigor U2D-Atom-31 USB2Demon USB to 31-pin Atom

Macraigor U2D-Atom-31 USB2Demon USB to 31-pin Atom

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Macraigor U2D-COP USB2Demon USB to COP JTAG

Macraigor U2D-COP USB2Demon USB to COP JTAG

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Macraigor Systems, LLC

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Macraigor WiFiDemon JTAG Interface for MIPS

Macraigor WiFiDemon JTAG Interface for MIPS

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Macraigor Systems, LLC

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Macraigor Wiggler Host Adapter for AMCC

Macraigor Wiggler Host Adapter for AMCC

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Macraigor Systems, LLC

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Macraigor Wiggler Host Adapter for COP

Macraigor Wiggler Host Adapter for COP

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Macraigor Wiggler Host Adapter for CPU32 3V BDM

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Macraigor Wiggler Host Adapter for CPU32 3V BDM

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Macraigor Systems, LLC

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