EP2S30F484C4N Altera, EP2S30F484C4N Datasheet - Page 27
![IC STRATIX II FPGA 30K 484-FBGA](/photos/6/72/67258/544-484-fbga_sml.jpg)
EP2S30F484C4N
Manufacturer Part Number
EP2S30F484C4N
Description
IC STRATIX II FPGA 30K 484-FBGA
Manufacturer
Altera
Series
Stratix® IIr
Datasheet
1.EP2S15F484I4N.pdf
(238 pages)
Specifications of EP2S30F484C4N
Number Of Logic Elements/cells
33880
Number Of Labs/clbs
1694
Total Ram Bits
1369728
Number Of I /o
342
Voltage - Supply
1.15 V ~ 1.25 V
Mounting Type
Surface Mount
Operating Temperature
0°C ~ 85°C
Package / Case
484-FBGA
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Number Of Gates
-
Other names
544-1891
EP2S30F484C4N
EP2S30F484C4N
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
EP2S30F484C4N
Manufacturer:
ALTERA
Quantity:
3 000
Part Number:
EP2S30F484C4N
Manufacturer:
ALTERA/阿尔特拉
Quantity:
20 000
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Figure 2–14. Example of a 3-bit Add Utilizing Shared Arithmetic Mode
Altera Corporation
May 2007
3-Bit Add Example
implemented in adders.
implemented in LUTs.
+
2nd stage add is
1st stage add is
1 1 0 1
1 1 0
+
Binary Add
1 1 0
1 0 1
0 1 0
0 0 1
+
C2 C1 C0
R3 R2 R1 R0
Shared Arithmetic Chain
In addition to the dedicated carry chain routing, the shared arithmetic
chain available in shared arithmetic mode allows the ALM to implement
a three-input add. This significantly reduces the resources necessary to
implement large adder trees or correlator functions.
The shared arithmetic chains can begin in either the first or fifth ALM in
an LAB. The Quartus II Compiler creates shared arithmetic chains longer
than 16 (8 ALMs in arithmetic or shared arithmetic mode) by linking
LABs together automatically. For enhanced fitting, a long shared
+
+
Equivalents
Decimal
X2 X1 X0
S2 S1 S0
2 x 6
Y2 Y1 Y0
Z2 Z1 Z0
+
13
6
5
2
1
X0
Y0
Z0
X1
Y1
Z1
X2
Y2
Z2
ALM Implementation
ALM 1
ALM 2
3-Input
3-Input
3-Input
3-Input
3-Input
3-Input
3-Input
3-Input
LUT
LUT
LUT
LUT
LUT
LUT
LUT
LUT
Stratix II Device Handbook, Volume 1
S0
C0
S1
C1
S2
C2
shared_arith_in = '0'
'0'
carry_in = '0'
Stratix II Architecture
R0
R1
R2
R3
2–19
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