EPM3032A 查看數據表（PDF） - Altera Corporation

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EPM3032A

Programmable Logic Device Family

Altera Corporation 

MAX 3000A Programmable Logic Device Family Data Sheet

Figure 4. MAX 3000A Parallel Expanders

Unused product terms in a macrocell can be allocated to a neighboring macrocell.

From

Previous

Macrocell

Product-

er

Select

Matrix

Preset

Clock

Clear

Macrocell

Product-

Term Logic

36 Signals 16 Shared

from PIA Expanders

Product-

Term

Select

Matrix

Preset

Clock

Clear

Macrocell

Product-

Term Logic

To Next

Macrocell

Programmable Interconnect Array

Logic is routed between LABs on the PIA. This global bus is a

programmable path that connects any signal source to any destination on

the device. All MAX 3000A dedicated inputs, I/O pins, and macrocell

outputs feed the PIA, which makes the signals available throughout the

entire device. Only the signals required by each LAB are actually routed

from the PIA into the LAB. Figure 5 shows how the PIA signals are routed

into the LAB. An EEPROM cell controls one input to a two-input AND gate,

which selects a PIA signal to drive into the LAB.

10

Altera Corporation

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