MAX9000 Просмотр технического описания (PDF) - Altera Corporation

Номер в каталоге

Компоненты Описание

производитель

MAX9000

Programmable Logic Device Family

Altera Corporation 

MAX 9000 Programmable Logic Device Family Data Sheet

Macrocells

The MAX 9000 macrocell consists of three functional blocks: the product

terms, the product-term select matrix, and the programmable register.

The macrocell can be individually configured for both sequential and

combinatorial logic operation. See Figure 3.

Figure 3. MAX 9000 Macrocell & Local Array

33 Row

FastTrack

Interconnect

Inputs

LAB Local

Array

Parallel

Expanders

(from Other

Macrocells)

Global Global

Clear Clocks

2

Macrocell Register

Input Select Bypass

Programmable

Register

Product-

Term

Select

Matrix

16 Local

Feedbacks

16 Shareable

Expander Product

Clock/

Enable

Select

VCC

Clear

Select

PRN

D/T Q

ENA

CLRN

To Row or

Column

FastTrack

Interconnect

Local Array

Feedback

Combinatorial logic is implemented in the local array, which provides five

product terms per macrocell. The product-term select matrix allocates

these product terms for use as either primary logic inputs (to the OR and

XOR gates) to implement combinatorial functions, or as secondary inputs

to the macrocell’s register clear, preset, clock, and clock enable control

functions. Two kinds of expander product terms (“expanders”) are

available to supplement macrocell logic resources:

■ Shareable expanders, which are inverted product terms that are fed

back into the logic array

■ Parallel expanders, which are product terms borrowed from adjacent

macrocells

The MAX+PLUS II software automatically optimizes product-term

allocation according to the logic requirements of the design.

8

Altera Corporation

Share Link: