
78
Lucent Technologies Inc.
Data Sheet
June 1999
ORCA Series 3C and 3T FPGAs
Programmable Clock Manager (PCM)
(continued)
Table 29
.
PCM Oscillator Frequency Range
3Txxx
Note: Use of settings in the first three rows is not recommended.
X means don’t care.
Table 30
.
PCM Oscillator Frequency Range 3Cxx
Note: Use of settings in the first three rows is not recommended.
X means don’t care.
Register 4
76543210
00XXX010
00XXX011
00XXX100
00XXX101
00XXX110
00XXX111
01XXX000
01XXX001
01XXX010
01XXX011
01XXX100
01XXX101
01XXX110
01XXX111
10000XXX
10001XXX
10010XXX
10011XXX
10100XXX
10101XXX
10110XXX
10111XXX
11000XXX
11001XXX
11010XXX
11011XXX
11100XXX
11101XXX
11110XXX
11111XXX
Min
(MHz)
17.00
16.10
15.17
14.25
13.33
12.40
12.20
12.10
11.90
11.70
11.10
10.50
10.00
9.40
9.20
9.00
8.80
8.60
8.40
8.10
7.90
7.70
7.60
7.45
7.30
7.20
6.60
6.00
5.50
5.00
System
Clock
Output
Frequency
(MHz)
NOM
58.50
52.50
49.00
45.00
41.50
38.00
36.75
35.00
33.00
31.30
30.00
29.15
28.10
27.00
26.25
25.65
25.00
24.45
23.70
22.90
22.20
21.50
20.80
20.10
19.45
18.85
18.30
17.70
17.10
16.50
Max
(MHz)
100.00
89.00
82.80
76.50
70.30
64.00
61.30
58.00
54.30
51.00
49.40
47.80
46.20
44.60
43.30
42.30
41.30
40.30
39.00
37.70
36.50
35.20
34.00
32.80
31.60
30.50
30.00
29.40
28.60
28.00
T
Acquisition
(μs)
36.00
37.00
38.00
39.00
40.00
41.00
43.75
46.50
49.25
52.00
54.75
57.50
60.25
63.00
65.40
67.80
70.10
72.50
74.90
77.30
79.60
82.00
84.30
86.50
88.80
91.00
93.30
95.50
97.80
100.00
Register 4
76543210
00XXX010 10.50
00XXX011 10.00
00XXX100
00XXX101
00XXX110
00XXX111
01XXX000
01XXX001
01XXX010
01XXX011
01XXX100
01XXX101
01XXX110
01XXX111
10000XXX
10001XXX
10010XXX
10011XXX
10100XXX
10101XXX
10110XXX
10111XXX
11000XXX
11001XXX
11010XXX
11011XXX
11100XXX
11101XXX
11110XXX
11111XXX
Min
(MHz)
System
Clock
Output
Frequency
(MHz)
NOM
73.00
68.00
63.00
58.50
53.80
49.00
47.70
46.30
45.00
43.60
42.10
40.75
39.40
38.00
37.40
36.70
36.00
35.40
35.00
34.10
33.50
32.80
32.10
31.50
30.70
30.10
29.50
28.80
28.20
27.50
Max
(MHz)
135.00
126.00
117.00
108.00
99.00
90.00
87.50
85.00
82.50
80.00
77.50
75.00
72.50
70.00
68.80
67.50
66.30
65.00
63.80
62.50
61.30
60.00
58.80
57.50
56.30
55.00
53.80
52.50
51.30
50.00
T
Acquisition
(μs)
36.00
37.00
38.00
39.00
40.00
41.00
43.80
46.50
49.30
52.00
55.00
57.50
60.30
63.00
65.40
67.80
70.10
72.50
74.90
77.30
79.60
82.00
84.30
86.50
88.80
91.00
93.30
95.50
97.80
100.00
9.50
9.10
8.60
8.10
7.80
7.60
7.30
7.10
6.80
6.50
6.30
6.00
5.90
5.90
5.80
5.80
5.70
5.60
5.60
5.50
5.40
5.40
5.30
5.30
5.20
5.10
5.10
5.00