The Parallel Download Cable consists of a cable assembly containing logic to protect your PC`s parallel port and a set of headers to connect to your target system.
Using the Parallel Download Cable requires a PC equipped with an AT compatible parallel port interface with a DB25 standard printer connector. Figure 2-4 shows the Parallel Download Cable.
Figure 2.4 Parallel Download Cable and Accessories |  |
The cable assembly contains logic designed to electrically isolate the target system from the parallel port of your PC host system.
The parallel download cable can be used with a single CPLD or several connected in a boundary-scan chain to download and readback configuration and boundary-scan data.
The transmission speed of the Parallel Download Cable is determined solely by the speed at which the host PC can transmit data through its parallel port interface.
Figure 2-5 shows top and bottom view of the Parallel Download Cable.
Figure 2.5 Top and Bottom View of Parallel Download Cable | |
Figure 2.6 Parallel Download Cable Connection to JTAG Boundary-scan TAP | |
Appendix B contains schematic diagrams of the Parallel Download Cable.
On PCs you can connect the parallel cable to your system's parallel printer port. The JTAG Programmer software will automatically identify the cable when correctly connected to your PC. If you choose to, you may also select this connection manually. To set up a parallel port manually:
Output 
Cable Setup
Select the Parallel box and match to the port you are using, then click on OK.
