EP2SGX30CF780C4N Altera, EP2SGX30CF780C4N Datasheet - Page 67
EP2SGX30CF780C4N
Manufacturer Part Number
EP2SGX30CF780C4N
Description
IC STRATIX II GX 30K 780-FBGA
Manufacturer
Altera
Series
Stratix® II GXr
Datasheet
1.EP2SGX30DF780C5.pdf
(316 pages)
Specifications of EP2SGX30CF780C4N
Number Of Logic Elements/cells
33880
Number Of Labs/clbs
1694
Total Ram Bits
1369728
Number Of I /o
361
Voltage - Supply
1.15 V ~ 1.25 V
Mounting Type
Surface Mount
Operating Temperature
0°C ~ 85°C
Package / Case
780-FBGA
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Number Of Gates
-
Other names
544-1927
EP2SGX30CF780C4N
EP2SGX30CF780C4N
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Figure 2–43. ALM in Shared Arithmetic Mode
Note to
(1)
Altera Corporation
October 2007
Inputs dataf0 and dataf1 are available for register packing in shared arithmetic mode.
Figure
datae0
datae1
datab
dataa
datad
datac
2–43:
Adder trees are used in many different applications. For example, the
summation of the partial products in a logic-based multiplier can be
implemented in a tree structure. Another example is a correlator function
that can use a large adder tree to sum filtered data samples in a given time
frame to recover or to de-spread data which was transmitted utilizing
spread spectrum technology. An example of a three-bit add operation
utilizing the shared arithmetic mode is shown in
sum (S[2..0]) and the partial carry (C[2..0]) is obtained using the
LUTs, while the result (R[2..0]) is computed using the dedicated
adders.
4-Input
4-Input
4-Input
4-Input
LUT
LUT
LUT
LUT
shared_arith_out
shared_arith_in
carry_out
carry_in
Stratix II GX Device Handbook, Volume 1
D
D
reg0
reg1
Q
Q
Figure
Stratix II GX Architecture
To general or
To general or
To general or
To general or
local routing
local routing
local routing
local routing
2–44. The partial
2–59
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