EP1S20F484C6N Altera, EP1S20F484C6N Datasheet - Page 626

• Manufacturer Part Number: EP1S20F484C6N
• Description: IC STRATIX FPGA 20K LE 484-FBGA
• Manufacturer: Altera
• Series: Stratix®r

Specifications of EP1S20F484C6N

• Number Of Logic Elements/cells: 18460
• Number Of Labs/clbs: 1846
• Total Ram Bits: 1669248
• Number Of I /o: 361
• Voltage - Supply: 1.425 V ~ 1.575 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: -

Matrix Manipulation
Figure 7–27. Using Free Boundary Condition for Edge Pixels
7–48
Stratix Device Handbook, Volume 2
Image boundary
0
0
0
3 x 3 kernel slides across image
x( x x m + 1, n )
x( x x
black pixels, that is pixels with value zero. This is similar to padding the
edges of the input image matrix with zeros and is referred to as the free
boundary condition. This is shown in
Convolution Implementation
This design example shows a 3
input image with gray pixel values ranging from 0-255 (8-bit). Data is fed
in serially starting from the top left pixel, moving horizontally on a row-
by-row basis. Next the data is stored in three separate RAM blocks in the
buffering stage. Each M512 memory block represents a line of the image,
and this is cycled through. For a 32
M4K memory blocks. For larger images (640
to M-RAM blocks or other buffering schemes. The control logic block
provides the RAM control signals to interleave the data across all three
0
x( x x m + 1, n + 1)
x( x x m , n + 1)
0
3 2-D FIR filter that takes in an 8
32 input image, the design needs
Figure
7–27.
480), this can be extended
Image boundary
Altera Corporation
Image
September 2004
8