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| 型号： | EPM7128ALC84-6 |
| 文件页数： | 59/60页 |
| 文件大小： | 1030K |
| 代理商： | EPM7128ALC84-6 |
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Altera Corporation
MAX 7000A Programmable Logic Device Data Sheet
Macrocells
MAX 7000A macrocells can be individually configured for either
sequential or combinatorial logic operation. The macrocells consist of
three functional blocks: the logic array, the product-term select matrix,
and the programmable register. Figure 2 shows a MAX 7000A macrocell.
Figure 2. MAX 7000A Macrocell
Combinatorial logic is implemented in the logic 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 preset, clock, and clock enable control
functions.
Two kinds of expander product terms (“expanders”) are available to
supplement macrocell logic resources:
I
Shareable expanders, which are inverted product terms that are fed
back into the logic array
I
Parallel expanders, which are product terms borrowed from adjacent
macrocells
The Altera development system automatically optimizes product-term
allocation according to the logic requirements of the design.
Product-
Term
Select
Matrix
36 Signals
from PIA
16 Expander
Product Terms
LAB Local Array
Parallel Logic
Expanders
(from other
macrocells)
Shared Logic
Expanders
Clear
Select
Global
Clear
Global
Clocks
Clock/
Enable
Select
2
PRN
CLRN
D/T
Q
ENA
Register
Bypass
To I/O
Control
Block
From
I/O pin
To PIA
Programmable
Register
Fast Input
Select
VCC
相关PDF资料 |
PDF描述 |
|---|---|
| EPM7128ALC84-7 | |
| EPM7128ATC100-10 | |
| EPM7128ATC100-12 | |
| EPM7128ATC100-6 | |
| EPM7128ATC100-7 | |
相关代理商/技术参数 |
参数描述 |
|---|---|
| EPM7128ALC84-7 | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| EPM7128AT10010 | 制造商:ALTERA 功能描述:NEW |
| EPM7128AT1100-10 | 制造商:Altera Corporation 功能描述: |
| EPM7128ATC100-10 | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| EPM7128ATC100-10F | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
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