Freescale Semiconductor USB Multilink Universal, Rev. A U-MULTILINK U-MULTILINK Manual Do Utilizador

Technical Summary For USB-ML-UNIVERSAL Rev. A

a. BKGD (Pin-1) and RESET (Pin-4) are pulled low by the interface.
b. After 5 milliseconds, RESET (Pin-4) is released and goes high.
c. After 10 milliseconds, BKGD (Pin-1) is released and goes high.
d. After 20 more milliseconds, debug activity is seen on BKGD (Pin-1).

a. BKPT (Pin-2), DSI (Pin-8), and DSCLK (Pin-4) signals are driven low. 
b. RESET (Pin-7) is driven low for 20+ milliseconds and released. 
c. After RESET is released and if the processor has correctly entered background mode, the 

PST0 (Pin-15), PST1 (Pin-14), PST2 (Pin-13) and PST3 (Pin-12) lines should all be driven 
high by the processor. 

d. Activity (changing signals) is seen on the DSI, DSO, and DSCLK signals. The activity on the 

DSCLK and DSI lines is generated by the PC and the activity on the DSO line is generated by 
the processor. 

Port E –  JTAG/COP (Not yet supported)

The USB Multilink Universal uses firmware updates to change between modes of operation to support different 
families of Freescale microcontrollers. Older versions of P&E's software and Freescale's CodeWarrior are not able 
to automatically configure the USB Multilink Universal when the target is switched to a different family of 
microcontrollers. If you are not using the latest version, please contact us to determine if you are eligible for a 
discounted upgrade to the latest version of P&E software. You may also download a manual configuration utility for 
the USB Multilink Universal from the Support Center or USB Multilink Universal product page on our website:
http://www.pemicro.com/support/downloads_find.cfm

P&E produces a set of interface libraries which allow the user to directly control the USB Multilink Universal from 
any Windows Development environment which can interact with a DLL. The interface libraries come with examples 
for controlling the Multilink interface from Microsoft Visual C as well as Borland Delphi. More details can be found 
on the Interface Libraries page on the P&E website: 
http://www.pemicro.com/products/product_processor.cfm?category=9

In addition to support from Freescale Codewarrior and other third party software, each of the families supported by 
the USB Multilink Universal is supported by a variety of software from P&E, including flash programmers, 
debuggers, and test application packages . Details can be found in the “Products” section at www.pemicro.com.

The USB Multilink Universal is intended for development and is not designed to accomodate the demands of 
production programming. However, P&E’s Cyclone programmers are specifically engineered to withstand the 
rigors of a production environment and will provide a seamless transition from the USB Multilink Universal. More 
information is available at: http://www.pemicro.com/cyclone

P&E is developing a high-speed version of the USB Multilink Universal called the USB Multilink Universal FX. It will 
have enhanced communications speed and other features. Keep an eye on our website at www.pemicro.com/
universal for information about the USB Multilink Universal FX.