參數(shù)資料
型號： XCS05XL-3PQ256C
廠商： Xilinx, Inc.
英文描述： Spartan and Spartan-XL Families Field Programmable Gate Arrays
中文描述： 斯巴達和Spartan - xL的家庭現(xiàn)場可編程門陣列
文件頁數(shù)： 33/82頁
文件大?。?/td> 623K
代理商： XCS05XL-3PQ256C
Spartan and Spartan-XL Families Field Programmable Gate Arrays
DS060 (v1.6) September 19, 2001
Product Specification
www.xilinx.com
1-800-255-7778
33
R
During Readback, 11 bits of the 16-bit checksum are added
to the end of the Readback data stream. The checksum is
computed using the CRC-16 CCITT polynomial, as shown
in
Figure 29
. The checksum consists of the 11 most signifi-
cant bits of the 16-bit code. A change in the checksum indi-
cates a change in the Readback bitstream. A comparison to
a previous checksum is meaningful only if the readback
data is independent of the current device state. CLB outputs
should not be included (Readback Capture option not
used), and if RAM is present, the RAM content must be
unchanged.
Statistically, one error out of 2048 might go undetected.
Table 17:
Spartan/XL Program Data
Device
Max System
Gates
CLBs
(Row x Col.)
IOBs
Part Number
XCS05 XCS05XL
Supply Voltage
Bits per Frame
Frames
Program Data
53,936
PROM Size
(bits)
Serial PROM
17S05
Express Mode
PROM Size
(bits)
Notes:
1.
Bits per Frame = (10 x number of rows) + 7 for the top + 13 for the bottom + 1 + 1 start bit + 4 error check bits (+1 for Spartan-XL
device)
Number of Frames = (36 x number of columns) + 26 for the left edge + 41 for the right edge + 1 (+ 1 for Spartan-XL device)
Program Data = (Bits per Frame x Number of Frames) + 8 postamble bits
PROM Size = Program Data + 40 (header) + 8, rounded up to the nearest byte
2.
The user can add more "1" bits as leading dummy bits in the header, or, if CRC = off, as trailing dummy bits at the end of any frame,
following the four error check bits. However, the Length Count value
must
be adjusted for all such extra "one" bits, even for extra
leading ones at the beginning of the header.
3.
Express mode adds 57 (XCS05XL, XCS10XL), or 53 (XCS20XL, XCS30XL, XCS40XL) bits per frame, + additional start-up bits.
XCS05
5,000
XCS10
10,000
XCS20
20,000
XCS30
30,000
XCS40
40,000
100
(10 x 10)
80
196
(14 x 14)
112
400
(20 x 20)
160
XCS20XL XCS30
5V
3.3V
226
227
788
789
178,096
179,111
178,144
179,160
576
(24 x 24)
192
XCS30XL XCS40 XCS40XL
5V
3.3V
266
267
932
933
247,920
249,119
247,968
249,168
784
(28 x 28)
224
XCS10 XCS10XL XCS20
5V
3.3V
166
167
572
573
94,960
95,699
95,008
95,752
5V
126
428
3.3V
127
429
54,491
54,544
5V
306
1,076
329,264
329,312
3.3V
307
1,077
330,647
330,696
53,984
17S05XL
79,072
17S10
-
17S10XL
128,488
17S20
-
17S20XL
221,056
17S30
-
17S30XL
298,696
17S40
-
17S40XL
387,856
-
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