Manley Labs switch/hub - Manual (Page 10)

10 www.st.com/micropsd
Programmable Logic Programmable Logic
• Built-in 16 MacroCell PLD for General Purpose Logic
• Similar to standard 22V10 architecture
• Eliminate small PLDs, PALs, 74XXX series discrete logic
• Easy Point-and-Click PLD configuration with PSDsoft Express
• Build:
– Glue logic
– State-machines
– Shifters
– Counters
– Chip-selects for external devices
– Keypad interfaces
– Delay generators
– Clock dividers
– Decoders
– Multiplexers
PLD
PAL
74XXX
State 0
State 1
State 2
State 3
Easy interface to external devices