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| 型號(hào)： | APA075-TQ144I |
| 廠商： | Microsemi SoC |
| 文件頁(yè)數(shù)： | 95/178頁(yè) |
| 文件大小： | 0K |
| 描述： | IC FPGA PROASIC+ 75K 144-TQFP |
| 標(biāo)準(zhǔn)包裝： | 60 |
| 系列： | ProASICPLUS |
| RAM 位總計(jì)： | 27648 |
| 輸入/輸出數(shù)： | 107 |
| 門數(shù)： | 75000 |
| 電源電壓： | 2.3 V ~ 2.7 V |
| 安裝類型： | 表面貼裝 |
| 工作溫度： | -40°C ~ 85°C |
| 封裝/外殼： | 144-LQFP |
| 供應(yīng)商設(shè)備封裝： | 144-TQFP（20x20） |
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ProASICPLUS Flash Family FPGAs
v5.9
2-13
Lock Signal
An active high Lock signal (added via the SmartGen PLL
development tool) indicates that the PLL has locked to
the incoming clock signal. The PLL will acquire and
maintain a lock even when there is jitter on the incoming
clock signal. The PLL will maintain lock with an input
jitter up to 5% of the input period, with a maximum of
5 ns. Users can employ the Lock signal as a soft reset of
the logic driven by GLB and/or GLA. Note if FIN is not
within specified frequencies, then both the FOUT and lock
signal are indeterminate.
PLL Configuration Options
The PLL can be configured during design (via flash-
configuration bits set in the programming bitstream) or
dynamically during device operation, thus eliminating
the need to reprogram the device. The dynamic
configuration bits are loaded into a serial-in/parallel-out
shift register provided in the clock conditioning circuit.
The shift register can be accessed either from user logic
within the device or via the JTAG port. Another option is
internal
dynamic
configuration
via
user-designed
hardware. Refer to Actel's ProASICPLUS PLL Dynamic
Reconfiguration Using JTAG application note for more
information.
For information on the clock conditioning circuit, refer
to Actel’s Using ProASICPLUS Clock Conditioning Circuits
application note.
Sample Implementations
Frequency Synthesis
Figure 2-13 on page 2-14 illustrates an example where
the PLL is used to multiply a 33 MHz external clock up to
133 MHz. Figure 2-14 on page 2-14 uses two dividers to
synthesize a 50 MHz output clock from a 40 MHz input
reference clock. The input frequency of 40 MHz is
multiplied by five and divided by four, giving an output
clock (GLB) frequency of 50 MHz. When dividers are
used, a given ratio can be generated in multiple ways,
allowing the user to stay within the operating frequency
ranges of the PLL. For example, in this case the input
divider could have been two and the output divider also
two, giving us a division of the input frequency by four
to go with the feedback loop division (effective
multiplication) by five.
Adjustable Clock Delay
Figure 2-15 on page 2-15 illustrates the delay of the
input clock by employing one of the adjustable delay
lines. This is easily done in ProASICPLUS by bypassing the
PLL core entirely and using the output delay line. Notice
also that the output clock can be effectively advanced
relative to the input clock by using the delay line in the
feedback path. This is shown in Figure 2-16 on page 2-15.
Clock Skew Minimization
Figure 2-17 on page 2-16 indicates how feedback from
the clock network can be used to create minimal skew
between the distributed clock network and the input
clock. The input clock is fed to the reference clock input
of the PLL. The output clock (GLA) feeds a clock network.
The feedback input to the PLL uses a clock input delayed
by a routing network. The PLL then adjusts the phase of
the input clock to match the delayed clock, thus
providing nearly zero effective skew between the two
clocks.
Refer
to
Actel's
Clock
Conditioning
Circuits
application
note
for
more
information.
Table 2-8
Clock Conditioning Circuitry Delay-Line
Settings
Delay Line
Delay Value (ns)
DLYB
00
1
+0.25
2
+0.50
3+4.0
DLYA
00
1
+0.25
2
+0.50
3+4.0
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| APA075-TQ896A | 制造商:ACTEL 制造商全稱:Actel Corporation 功能描述:Automotive-Grade ProASIC Flash Family FPGAs |
| APA075-TQB | 制造商:ACTEL 制造商全稱:Actel Corporation 功能描述:ProASIC Flash Family FPGAs |
| APA075-TQES | 制造商:ACTEL 制造商全稱:Actel Corporation 功能描述:ProASIC Flash Family FPGAs |
| APA075-TQG100 | 功能描述:IC FPGA PROASIC+ 75K 100-TQFP RoHS:是 類別:集成電路 (IC) >> 嵌入式 - FPGA（現(xiàn)場(chǎng)可編程門陣列） 系列:ProASICPLUS 標(biāo)準(zhǔn)包裝:152 系列:IGLOO PLUS LAB/CLB數(shù):- 邏輯元件/單元數(shù):792 RAM 位總計(jì):- 輸入/輸出數(shù):120 門數(shù):30000 電源電壓:1.14 V ~ 1.575 V 安裝類型:表面貼裝 工作溫度:-40°C ~ 85°C 封裝/外殼:289-TFBGA，CSBGA 供應(yīng)商設(shè)備封裝:289-CSP（14x14） |
| APA075-TQG100A | 功能描述:IC FPGA PROASIC+ 75K 100-TQFP RoHS:是 類別:集成電路 (IC) >> 嵌入式 - FPGA（現(xiàn)場(chǎng)可編程門陣列） 系列:ProASICPLUS 標(biāo)準(zhǔn)包裝:90 系列:ProASIC3 LAB/CLB數(shù):- 邏輯元件/單元數(shù):- RAM 位總計(jì):36864 輸入/輸出數(shù):157 門數(shù):250000 電源電壓:1.425 V ~ 1.575 V 安裝類型:表面貼裝 工作溫度:-40°C ~ 125°C 封裝/外殼:256-LBGA 供應(yīng)商設(shè)備封裝:256-FPBGA（17x17） |
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