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A14V60AA-1CQ208B

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型号: A14V60AA-1CQ208B
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  • A14V60AA-1CQ208B PDF文件
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功能描述: Accelerator Series FPGAs - ACT 3Family
PDF文件大小: 479.35 Kbytes
PDF页数: 共68页
制造商: ACTEL[Actel Corporation]
制造商LOGO: ACTEL[Actel Corporation] LOGO
制造商网址: http://www.actel.com
捡单宝A14V60AA-1CQ208B
PDF页面索引
120%
1-182
The S-module contains a full implementation of the C-module
plus a clearable sequential element that can either
implement a latch or flip-flop function. The S-module can
therefore implement any function implemented by the
C-module. This allows complex combinatorial-sequential
functions to be implemented with no delay penalty. The
Designer Series Development System will automatically
combine any C-module macro driving an S-module macro into
the S-module, thereby freeing up a logic module and
eliminating a module delay.
The clear input CLR is accessible from the routing channel.
In addition, the clock input may be connected to one of three
clock networks: CLKA, CLKB, or HCLK. The C-module and
S-module functional descriptions are shown in Figures 2
and 3. The clock selection is determined by a multiplexor
select at the clock input to the S-module.
I/Os
I/O Modules
I/O modules provide an interface between the array and the
I/O Pad Drivers. I/O modules are located in the array and
access the routing channels in a similar fashion to logic
modules. The I/O module schematic is shown in Figure 4. The
signals DataIn and DataOut connect to the I/O pad driver.
Each I/O module contains two D-type flip-flops. Each flip-flop
is connected to the dedicated I/O clock (IOCLK). Each
flip-flop can be bypassed by nonsequential I/Os. In addition,
each flip-flop contains a data enable input that can be
accessed from the routing channels (ODE and IDE). The
asynchronous preset/clear input is driven by the dedicated
preset/clear network (IOPCL). Either preset or clear can be
selected individually on an I/O module by I/O module basis.
The I/O module output Y is used to bring Pad signals into the
array or to feed the output register back into the array. This
allows the output register to be used in high-speed state
machine applications. Side I/O modules have a dedicated
output segment for Y extending into the routing channels
above and below (similar to logic modules). Top/Bottom I/O
modules have no dedicated output segment. Signals coming
into the chip from the top or bottom are routed using F-fuses
and LVTs (F-fuses and LVTs are explained in detail in the
routing section).
Figure 2 C-Module Diagram
D11
D01
D00
D10
A1 B1 A0 B0
Y
OUT
S1 S0
Figure 3 S-Module Diagram
CLR
CLK
D11
D01
D00
D10
A1 B1 A0 B0
Y
Q
D
OUT
S0
S1
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