參數(shù)資料
型號: EP20K400EQI240-2
廠商: ALTERA CORP
元件分類: PLD
英文描述: LOADABLE PLD, PQFP240
封裝: PLASTIC, QFP-240
文件頁數(shù): 17/65頁
文件大?。?/td> 781K
代理商: EP20K400EQI240-2
46
Altera Corporation
APEX 20K Programmable Logic Device Family Data Sheet
Preliminary Information
Note:
(1)
This connection is supported in APEX 20KE devices only.
Product-Term Logic
The product-term portion of the MultiCore architecture is implemented
with the ESB. The ESB can be configured to act as a block of macrocells on
an ESB-by-ESB basis. Each ESB is fed by 32 inputs from the adjacent local
interconnect; therefore, it can be driven by the MegaLAB interconnect or
the adjacent LAB. Also, 9 ESB macrocells feed back into the ESB through
the local interconnect for higher performance. Dedicated clock pins,
global signals, and additional inputs from the local interconnect drive the
ESB control signals.
In product-term mode, each ESB contains 16 macrocells. Each macrocell
consists of two product terms and a programmable register. Figure 13
shows the ESB in product-term mode.
Table 8. APEX 20K Routing Scheme
Source
Destination
Row
I/O Pin
Column
I/O Pin
LE
ESB
Local
Interconnect
MegaLAB
Interconnect
Row
FastTrack
Interconnect
Column
FastTrack
Interconnect
FastRow
Interconnect
Row I/O Pin
v
Column I/O
Pin
v (1)
v
v (1)
LE
v
ESB
v
Local
Interconnect
v
MegaLAB
Interconnect
v
Row
FastTrack
Interconnect
v
Column
FastTrack
Interconnect
v
FastRow
Interconnect
v (1)
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