1. Introduction
The XJLink2-CFM is an application module compatible with the Teradyne Multi-Function Application Board
(MFAB). It brings XJTAG’s boundary scan test and programming tools to a Teradyne TestStation
™
.
One XJLink2-CFM can provide up to four independent JTAG TAPs when used in conjunction with
extender boards that distribute the signals to the MFAB’s different slots.
To test multiple PCBAs simultaneously, additional XJLink2-CFM boards can be fitted into spare slots on
the MFAB.
This guide describes the XJLink2-CFM and how to connect it plus any extender boards to the MFAB.
2. Description of the XJLink2-CFM
The XJLink2-CFM has 18 interface pins that can be independently configured in software to provide
different functions.
It has the following capabilities:
Provides up to four independent JTAG TAPs.
•
Each of the 18 interface pins can be configured to be a programmable I/O.
•
The 18 interface pins are grouped into two independent banks.
•
Each bank’s operating voltages can be configured in software or set by an externally applied voltage.
Digital outputs have selectable drive strength and slew rate.
•
I/O pins provide programming capability over JTAG, I2C, SPI, SWD, and custom protocols.
•
Accelerated programming. The XJLink2-CFM’s advanced features achieve programming speeds
•
close to the theoretical maximum of the target device.
Figure 1 shows the XJLink2-CFM’s main connectors. The 18 configurable signals are present on J8, from
where a ribbon cable is used to distribute them to connectors J9 and J10 on the CFM and on any
expander boards.
Figure 1 – XJLink2-CFM Connectors
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XJTAG-XCFM-Guide-22K-02.1
www.xjtag.com
XJLink2-CFM .
User Guide
Teradyne Signal Distribution Hub Connector - J12
Connector for Direct Signals - J9
Connector for Multiplexed Signals - J10
Micro-USB Connector - J2
XJLink2 Connector - J8
