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Maxim > Design Support > Technical Documents > Application Notes > Microcontrollers > APP 3339
Keywords: JTAG, FPGA, PROM, SVF file, XILINX devices, MxTNI, XC18V02
APPLICATION NOTE 3339
Using the MxTNI JTAG library and SVF file to
program Xilinx PROM devices
Nov 02, 2004
Abstract: This application note explains how to use the MxTNI™ JTAG library to program Xilinx® PROM
devices, using a serial vector format (SVF) file. It is assumed that the reader has some familiarity with
JTAG and programmable logic.
Introduction
Maxim Tiny Network Interface (MxTNI) is a platform developed by Dallas Semiconductor, a wholly owned
subsidiary of Maxim Integrated Products. It is a combination of a small but powerful chip-set and a
Java® programmable runtime environment. The chip-set provides processing, control, device-level
communication and networking capabilities. To communicate with any JTAG device, the TINIs400 socket
board provides 4-pin JTAG output at the J21 terminal. These pins will wire directly to the standard JTAG
pins TDI, TDO, TMS, and TCK of the JTAG device.
In-system programmable PROMs can be programmed individually, or can be chained. All devices in the
chain share the TCK and TMS signals. The MxTNI TDI signal is connected to the TDI input of the first
device in the Boundary Scan Chain. The TDO signal from the first device is connected to the TDI input of
the second device in the chain and so on. The last device in the chain has its TDO output connected to
the MxTNI TDO pin as illustrated in Figure 1.
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