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| 型號(hào)： | AHA4013B |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | 12.5 MBytes/sec Reed-Solomon Error Correction Device |
| 中文描述： | 12.5 MB /秒的Reed - Solomon糾錯(cuò)裝置 |
| 文件頁(yè)數(shù)： | 27/28頁(yè) |
| 文件大?。?/td> | 232K |
| 代理商： | AHA4013B |
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PS4013B-0600
Page 23 of 24
Advanced Hardware Architectures, Inc.
APPENDIX B
AHA4013B Data Rate Calculations in Continuous Operation
Assumptions and Equations:
1) 50 MHz Clock is used.
2) Input Rate (C
i
) = Output Rate (C
o
)
3) Latency =
4) Data Rate = 50 MHz/C
i
clocks/byte
5) GOOD or BAD based on inequality equation:
(5)
6) GOOD or BAD based on inequality equation:
(6)
7) Check symbols are input into and output from the chip along with message symbols.
Note:
The following tables show examples of Data Rates and Latencies for various block sizes. Other block sizes
are also possible.
CLOCKS
/BYTE
4
4
4
4
4
4
4
4
4
4
4
4
4
N T
MAXIMUM LATENCYDATA RATE
CLOCKS
μ
SECONDS
209
4.18
343
6.86
359
7.18
476
9.52
609
12.16
742
14.88
1107
22.16
1181
23.60
1242
24.88
1143
22.88
1276
25.52
1409
28.16
1436
28.72
(MB/sec)
12.50
12.50
12.50
12.50
12.50
12.50
12.50
12.50
12.50
12.50
12.50
12.50
12.50
EQUATION 5 EQUATION 6
25 10
50 10
53 10
75 10
100 10
126 7
194 8
208 8
219 9
200 10
225 10
250 10
255 10
GOOD
GOOD
GOOD
GOOD
GOOD
GOOD
GOOD
GOOD
GOOD
GOOD
GOOD
GOOD
GOOD
BAD
BAD
BAD
GOOD
GOOD
GOOD
GOOD
GOOD
GOOD
GOOD
GOOD
GOOD
GOOD
CLOCKS
/BYTE
4
4
4
4
4
4
4
4
4
4
4
N T
MAXIMUM LATENCYDATA RATE
CLOCKS
μ
SECONDS
199
3.98
333
6.66
466
9.36
599
12.00
733
14.64
866
17.36
999
20.00
1133
22.64
1266
25.36
1399
28.00
1426
28.56
(MB/sec)
12.50
12.50
12.50
12.50
12.50
12.50
12.50
12.50
12.50
12.50
12.50
EQUATION 5 EQUATION 6
25
50
75
100 5
125 5
150 5
175 5
200 5
225 5
250 5
255 5
5
5
5
GOOD
GOOD
GOOD
GOOD
GOOD
GOOD
GOOD
GOOD
GOOD
GOOD
GOOD
BAD
GOOD
GOOD
GOOD
GOOD
GOOD
GOOD
GOOD
GOOD
GOOD
GOOD
C
i
N
1
–
(
)
R
60
+
(
)
N
C
–
C
i
1
-------------
×
+
+
×
R
-------------------------------------------------
60
N
C
1
---------–
×
+
+
C
i
N
367
≤
+
N
1
–
(
)
C
i
×
R
48
N
C
–
C
i
1
-------------
×
N
C
C
m
1
–
----------------
×
+
+
+
≥
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