XC3S100E-4TQ144C Xilinx Inc, XC3S100E-4TQ144C Datasheet - Page 36
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XC3S100E-4TQ144C
Manufacturer Part Number
XC3S100E-4TQ144C
Description
FPGA Spartan®-3E Family 100K Gates 2160 Cells 572MHz 90nm (CMOS) Technology 1.2V 144-Pin TQFP
Manufacturer
Xilinx Inc
Datasheet
1.XC3S100E-4VQG100C.pdf
(233 pages)
Specifications of XC3S100E-4TQ144C
Package
144TQFP
Family Name
Spartan®-3E
Device Logic Cells
2160
Device Logic Units
240
Device System Gates
100000
Number Of Registers
1920
Maximum Internal Frequency
572 MHz
Typical Operating Supply Voltage
1.2 V
Maximum Number Of User I/os
108
Ram Bits
73728
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Functional Description
Table 22: Port Aspect Ratios
If the data bus width of Port A differs from that of Port B, the
block RAM automatically performs a bus-matching function
as described in
with a narrow bus and then read from a port with a wide bus,
the latter port effectively combines “narrow” words to form
“wide” words. Similarly, when data is written into a port with
a wide bus and then read from a port with a narrow bus, the
latter port divides “wide” words to form “narrow” words. Par-
36
Notes:
1.
2.
3.
4.
Path Width
Total Data
(w bits)
The width of the total data path (w) is the sum of the DI/DO bus width (w-p) and any parity bits (p).
The width selection made for the DI/DO bus determines the number of address lines (r) according to the relationship expressed as:
r = 14 – [log(w–p)/log(2)].
The number of address lines delimits the total number (n) of addressable locations or depth according to the following equation: n = 2
The product of w and n yields the total block RAM capacity.
18
36
1
2
4
9
DI/DO Data
Bus Width
(w-p bits)
Figure
16
32
1
2
4
8
31. When data is written to a port
1
Parity Bus
DIP/DOP
(p bits)
Width
0
0
0
1
2
4
(r bits)
ADDR
Width
Bus
14
13
12
11
10
9
2
www.xilinx.com
[w-p-1:0]
DI/DO
[15:0]
[31:0]
[0:0]
[1:0]
[3:0]
[7:0]
ity bits are not available if the data port width is configured
as x4, x2, or x1. For example, if a x36 data word (32 data, 4
parity) is addressed as two x18 halfwords (16 data, 2 par-
ity), the parity bits associated with each data byte are
mapped within the block RAM to the appropriate parity bits.
The same effect happens when the x36 data word is
mapped as four x9 words.
DIP/DOP
[p-1:0]
[0:0]
[1:0]
[3:0]
-
-
-
ADDR
[r-1:0]
[13:0]
[12:0]
[11:0]
[10:0]
[9:0]
[8:0]
Locations (n)
Addressable
DS312-2 (v3.8) August 26, 2009
16,384
No. of
8,192
4,096
2,048
1,024
512
Product Specification
3
Block RAM
(w*n bits)
Capacity
16,384
16,384
16,384
18,432
18,432
18,432
r
.
4
R
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