EP2AGX190FF35C6N Altera, EP2AGX190FF35C6N Datasheet - Page 100
EP2AGX190FF35C6N
Manufacturer Part Number
EP2AGX190FF35C6N
Description
IC ARRIA II GX 190K 1152FBGA
Manufacturer
Altera
Series
Arria II GXr
Datasheets
1.EP2AGX45CU17C6N.pdf
(96 pages)
2.EP2AGX45CU17C6N.pdf
(14 pages)
3.EP2AGX45CU17C6N.pdf
(692 pages)
4.EP2AGX45CU17C6N.pdf
(10 pages)
5.EP2AGX45CU17C6N.pdf
(88 pages)
6.EP2AGX190FF35C6N.pdf
(306 pages)
Specifications of EP2AGX190FF35C6N
Number Of Logic Elements/cells
181165
Number Of Labs/clbs
7612
Total Ram Bits
9939
Number Of I /o
612
Voltage - Supply
0.87 V ~ 0.93 V
Mounting Type
Surface Mount
Operating Temperature
0°C ~ 85°C
Package / Case
1152-FBGA
Family Name
Arria® II GX
Number Of Logic Blocks/elements
190300
# I/os (max)
612
Frequency (max)
400MHz
Operating Supply Voltage (typ)
900mV
Logic Cells
190300
Ram Bits
10380902.4
Operating Supply Voltage (min)
0.87V
Operating Supply Voltage (max)
0.93V
Operating Temp Range
0C to 85C
Operating Temperature Classification
Commercial
Mounting
Surface Mount
Pin Count
1152
Package Type
FC-FBGA
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Number Of Gates
-
Lead Free Status / Rohs Status
Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
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4–28
Table 4–6. Example of Round-To-Nearest-Even Mode
Table 4–7. Comparison of Round-to-Nearest-Integer and Round-to-Nearest-Even
Arria II Device Handbook Volume 1: Device Interfaces and Integration
6- to 4-bits Rounding
Rounding and Saturation Mode
010111
001101
001010
001110
110111
101101
110110
110010
Round-To-Nearest-Integer
010111
001101
001010
001110
110111
101101
110110
110010
Rounding and saturation functions are often required in DSP arithmetic. Rounding is
to limit bit growth and its side effects; saturation is to reduce overflow and underflow
side effects.
Two rounding modes are supported in Arria II devices:
■
■
You must select one of the two options at compile time.
The round-to-nearest-integer provides the biased rounding support and is the
simplest form of rounding commonly used in DSP arithmetic. The
round-to-nearest-even mode provides unbiased rounding support and is used where
DC offsets are a concern.
mode. Examples of the difference between the two modes are shown in
this example, a 6-bit input is rounded to 4 bits. You can observe from
the main difference between the two rounding options is when the residue bits are
exactly half way between its nearest two integers and the LSB is zero (even).
Round-to-nearest-integer mode
Round-to-nearest-even mode
➱
➱
➱
➱
➱
➱
➱
➱
Odd/Even (Integer)
0110
0011
0011
0100
1110
1011
1110
1101
Even (0010)
Even (1100)
Odd (0011)
Odd (1101)
×
×
×
×
Table 4–6
Fractional
> 0.5 (11)
< 0.5 (01)
= 0.5 (10)
= 0.5 (10)
> 0.5 (11)
< 0.5 (01)
= 0.5 (10)
= 0.5 (10)
lists an example of how round-to-nearest-even
Round-To-Nearest-Even
Add to Integer
010111
001101
001010
001110
110111
101101
110110
110010
Chapter 4: DSP Blocks in Arria II Devices
1
0
0
1
1
0
1
0
Arria II Operational Mode Descriptions
December 2010 Altera Corporation
➱
➱
➱
➱
➱
➱
➱
➱
0110
0011
0010
0100
1110
1011
1110
1100
Table 4–7
Table
Result
0110
0011
0010
0100
1110
1011
1110
1100
4–7. In
that
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