Xilinx Parallel Cable or
Altera ByteBlaster for JTAG 1149.1
Intellitech also provides a low-cost,
low-speed solution for applying IEEE 1149.1 tests using the IEEE
1284 parallel port of a personal computer. The normal
1284 parallel port printer handshaking is overridden and 5 pins of
the PC printer port become the 1149.1 signals, TCK, TMS, TDI, TDO and
TRST.
The EclipseTM Test
Development Environment can be configured such that a PC's parallel
port can be
used to apply test vectors, CPLD/FPGA bitstreams, and FLASH data to devices, boards, or systems that are IEEE 1149.1 compliant.
The Eclipse Test Development Environment
parallel port driver provides good performance for interconnect
testing and CPLD/FPGA programming. It has acceptable
performance for programming small FLASH devices using EXTEST
on short boundary-scan chains in a prototyping environment.
(For faster FLASH programming use either the patented Fast Access
Controller technology over parallel port or the UltraTAP Intelligent Test
Controller
.)
The Intellitech parallel port cable, PP-CABLESET,
supports the optional IEEE 1149.1 TRST
pin, two independent boundary-scan chains and a discrete output for
direct access to FLASH write enables (WE). This cable is
suitable for 5V and 3.3V UUTs with 5V tolerant inputs.
Eclipse is also compatible with standard printer port
FPGA/CPLD programming pods from Altera and Xilinx. These low
cost cables provide buffering and voltage control over the PC's
parallel port. The specifications of the Xilinx PCIV is at Xilinx
Parallel Cable. The Altera
ByteBlaster specification and pod schematic is at Altera
ByteBlaster.
.
Benefits
- Lowest cost IEEE 1149.1 based test and configuration
- Reasonable performance with IEEE 1284 standard PC parallel port
- Easy to configure with Eclipse Test Development Environment
- Compatible with Intellitech cable, Xilinx
Parallel Cable III, Xilinx Parallel Cable IV and Altera
ByteBlaster
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