MaxLoader User’s Guide
| connected to the external metal interconnect pins of the IC with very small |
| bonding wires. It can be seen through the window of erasable EPROMs. |
DIP | Dual Inline Package. An IC package with two rows of |
| usually on 0.1 pitch, 0.3 or 0.6 inches apart. |
FPGA | Field Programmable Gate Array. A very complex PLD. The FPGA usually |
| has an architecture that comprises a large number of simple logic blocks, a |
| number of input/output pads, and a method to make random connections |
| between the elements. |
Functional Test | A test that is performed following the programming of a PLD. The test |
| operates the device in its normal operating mode by simulating the inputs |
| and outputs that the part will experience in normal operation. To perform the |
| test, the engineer must supply a set of test vectors that describe normal |
| operation of the device so the device programmer can apply the specified |
| stimulus and verify that the device is operating as designed. It is important to |
| perform a functional test on PLDs because, in many cases, the PLD cannot |
| be fully tested at the factory before programming so a defective PLD may |
| program correctly but fail the functional test. A properly designed functional |
| test will verify that the part meets the design specification, ensuring that the |
| device, the compiler, the programmer, and the engineer have all performed |
| their respective tasks correctly. |
Fuse | A metal connection within a PLD or memory that may be melted during |
| programming to break the circuit. These links typically carry input signals to |
| logic gates. Burning all the fuses except those that are required in the desired |
| circuit forms the desired circuit configuration. Since the fuses cannot be |
| tested nondestructively, |
| tested at the factory and consequently expected programming yields are |
| usually |
GAL | Generic Array Logic. EEPROM based second generation PAL devices. |
Gang Programmer | A |
| socket before any can be programmed. See Concurrent Programmer. |
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