AFS250-FGG256 Actel, AFS250-FGG256 Datasheet - Page 47
AFS250-FGG256
Manufacturer Part Number
AFS250-FGG256
Description
FPGA - Field Programmable Gate Array 250K System Gates
Manufacturer
Actel
Datasheet
1.AFS600-PQG208.pdf
(330 pages)
Specifications of AFS250-FGG256
Processor Series
AFS250
Core
IP Core
Maximum Operating Frequency
1098.9 MHz
Number Of Programmable I/os
114
Data Ram Size
36864
Supply Voltage (max)
1.575 V
Maximum Operating Temperature
+ 70 C
Minimum Operating Temperature
0 C
Development Tools By Supplier
AFS-Eval-Kit, AFS-BRD600, FlashPro 3, FlashPro Lite, Silicon-Explorer II, Silicon-Sculptor 3, SI-EX-TCA
Mounting Style
SMD/SMT
Supply Voltage (min)
1.425 V
Number Of Gates
250 K
Package / Case
FPBGA-256
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
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Quantity
Price
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Manufacturer:
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Quantity:
135
Company:
Part Number:
AFS250-FGG256
Manufacturer:
ACTEL
Quantity:
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Part Number:
AFS250-FGG256I
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No-Glitch MUX (NGMUX)
Positioned downstream from the PLL/CCC blocks, the NGMUX provides a special switching sequence
between two asynchronous clock domains that prevents generating any unwanted narrow clock pulses.
The NGMUX is used to switch the source of a global between three different clock sources. Allowable
inputs are either two PLL/CCC outputs or a PLL/CCC output and a regular net, as shown in
The GLMUXCFG[1:0] configuration bits determine the source of the CLK inputs (i.e., internal signal or
GLC). These are set by SmartGen during design but can also be changed by dynamically reconfiguring
the PLL. The GLMUXSEL[1:0] bits control which clock source is passed through the NGMUX to the global
network (GL). See
Figure 2-24 • NGMUX
Table 2-13 • NGMUX Configuration and Selection Table
GLMUXCFG[1:0]
00
01
W I/O Ring
CCC/PLL
Table
Clock I/Os
From FPGA Core
Crystal Oscillator
2-13.
RC Oscillator
GLMUXSEL[1:0]
X
X
X
X
PLL/
CCC
GLINT
R e v i s i o n 1
GLA
GLC
PWR UP
GLMUXSEL[1:0]
NGMUX
GLMUXCFG[1:0]
0
1
0
1
Actel Fusion Family of Mixed Signal FPGAs
Selected Input
Signal
GLINT
GLC
GLA
GLA
To Clock Rib Driver
GL
2-to-1 GLMUX
2-to-1 GLMUX
MUX Type
Figure
2-24.
2- 31
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