Libraries GuideChapter 11: Design Elements (X74_42 to X74_521)
X74_518
8-Bit Identity Comparator with Active-Low Enable
XC3000
| XC4000E
| XC4000X
| XC5200
| XC9000
| Spartan
| SpartanXL
| Spartan2
| Virtex
|
|---|
Macro
| Macro
| Macro
| Macro
| Macro
| Macro
| Macro
| N/A
| N/A
|
X74_518 is an 8-bit identity comparator with 16 data inputs for two 8-bit words (P7 - P0 and Q7 - Q0), data output (PEQ), and active-Low enable (G). When G is High, the PEQ output is Low. When G is Low and the two input words are equal, PEQ is High. Equality is determined by a bit comparison of the two words. When any of the two equivalent bits from the two words are not equal, PEQ is Low.
Figure 11.44 X74_518 Implementation XC3000, XC4000E, XC4000X, XC5200, XC9000, Spartan, SpartanXL