DS634 Datasheet, PDF (10/20 Pages) –

IEEE 802.16e CTC Decoder v4.0
Table 4: Latency of the IEEE 802.16e CTC Decoder Core Using Four SISOs
Data
Block
Size (N)
fclk = 160 MHz
Latency
Latency
(µs) Ni = 4 (µs) Ni = 5
fclk = 190 MHz
Latency
Latency
(µs) Ni = 4 (µs) Ni = 5
fclk = 215 MHz
Latency Latency (µs)
(µs) Ni = 4
Ni = 5
24
36
48
D 72
96
108
i₁₂₀
s₁₄₄
c180
192
o ₂₁₆
240
n ₄₈₀
960
t ₁₄₄₀
i ₁₉₂₀
n ₂₄₀₀
3.61
4.81
6.01
8.41
10.81
12.01
13.21
15.61
19.21
20.41
22.81
25.21
13.21
25.21
37.21
49.21
61.21
4.47
5.97
7.47
10.47
13.47
14.97
16.47
19.47
23.97
25.47
28.47
31.47
16.47
31.47
46.47
61.47
76.47
3.04
4.05
5.06
7.08
9.10
10.11
11.12
13.14
16.17
17.18
19.21
21.23
11.12
21.23
31.33
41.44
51.54
3.76
5.03
6.29
8.82
11.34
12.61
13.87
16.39
20.18
21.45
23.97
26.50
13.87
26.50
39.13
51.76
64.39
2.68
3.58
4.47
6.26
8.04
8.93
9.83
11.61
14.29
15.19
16.97
18.76
9.83
18.76
27.69
36.62
45.55
3.33
4.44
5.56
7.79
10.02
11.14
12.26
14.49
17.84
18.95
21.19
23.42
12.26
23.42
34.58
45.74
56.91
u _{Table 5: Latency of the IEEE 802.16e CTC Decoder Core Using Five SISOs}
e Data
Block
Size (N)
fclk = 160 MHz
Latency
Latency
(µs) Ni = 4 (µs) Ni = 5
fclk = 190 MHz
Latency
Latency
(µs) Ni = 4 (µs) Ni = 5
fclk = 215 MHz
Latency Latency (µs)
(µs) Ni = 4
Ni = 5
d ₂₄
3.61
4.47
3.04
3.76
2.68
3.33
36
4.81
5.97
4.05
5.03
3.58
4.44
48
6.01
7.47
5.06
6.29
4.47
5.56
IP ₇₂
8.41
10.47
7.08
8.82
6.26
7.79
96
10.81
13.47
9.10
11.34
8.04
10.02
108
12.01
14.97
10.11
12.61
8.93
11.14
120
13.21
16.47
11.12
13.87
9.83
12.26
144
15.61
19.47
13.14
16.39
11.61
14.49
180
19.21
23.97
16.17
20.18
14.29
17.84
192
20.41
25.47
17.18
21.45
15.19
18.95
216
22.81
28.47
19.21
23.97
16.97
21.19
10
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DS634 December 2, 2009
Product Specification