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參數(shù)資料
| 型號(hào)： | A54SXxxA |
| 廠商： | Electronic Theatre Controls, Inc. |
| 元件分類(lèi)： | FPGA |
| 英文描述： | SX-A Family FPGAs |
| 中文描述： | 的SX - A系列FPGA的 |
| 文件頁(yè)數(shù)： | 29/108頁(yè) |
| 文件大?。?/td> | 720K |
| 代理商： | A54SXXXA |
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SX-A Family FPGAs
v5.1
2-9
Where:
C
EQCM
= Equivalent capacitance of combinatorial modules
(C-cells) in pF
C
EQSM
= Equivalent capacitance of sequential modules (R-Cells) in pF
C
EQI
= Equivalent capacitance of input buffers in pF
C
EQO
= Equivalent capacitance of output buffers in pF
C
EQCR
= Equivalent capacitance of CLKA/B in pF
C
EQHV
= Variable capacitance of HCLK in pF
C
EQHF
= Fixed capacitance of HCLK in pF
C
L =
Output lead capacitance in pF
f
m
= Average logic module switching rate in MHz
f
n
= Average input buffer switching rate in MHz
f
p
= Average output buffer switching rate in MHz
f
q1
= Average CLKA rate in MHz
f
q2
= Average CLKB rate in MHz
f
s1
= Average HCLK rate in MHz
m = Number of logic modules switching at fm
n = Number of input buffers switching at fn
p = Number of output buffers switching at fp
q
1
= Number of clock loads on CLKA
q
2
= Number of clock loads on CLKB
r
1
= Fixed capacitance due to CLKA
r
2
= Fixed capacitance due to CLKB
s
1 =
Number of clock loads on HCLK
x = Number of I/Os at logic low
y = Number of I/Os at logic high
Table 2-11
CEQ Values for SX-A Devices
A54SX08A
A54SX16A
A54SX32A
A54SX72A
Combinatorial modules (C
EQCM
)
1.70 pF
2.00 pF
2.00 pF
1.80 pF
Sequential modules (C
EQCM
)
1.50 pF
1.50 pF
1.30 pF
1.50 pF
Input buffers (C
EQI
)
1.30 pF
1.30 pF
1.30 pF
1.30 pF
Output buffers (C
EQO
)
7.40 pF
7.40 pF
7.40 pF
7.40 pF
Routed array clocks (C
EQCR
)
1.05 pF
1.05 pF
1.05 pF
1.05 pF
Dedicated array clocks – variable
(C
EQHV
)
0.85 pF
0.85 pF
0.85 pF
0.85 pF
Dedicated array clocks – fixed (C
EQHF
)
30.00 pF
55.00 pF
110.00 pF
240.00 pF
Routed array clock A (r
1
)
35.00 pF
50.00 pF
90.00 pF
310.00 pF
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