76
Lattice Semiconductor
Data Sheet
November 2006
ORCA Series 3C and 3T FPGAs
Programmable Clock Manager (PCM)
(continued)
Table 29. PCM Oscillator Frequency Range 3Txxx
Note: Use of settings in the rst three rows is not recommended.
X means don’t care.
Table 30. PCM Oscillator Frequency Range 3Cxx
Note: Use of settings in the rst three rows is not recommended.
X means don’t care.
Register 4
76543210
Min
(MHz)
System
Clock
Output
Frequency
(MHz)
NOM
Max
(MHz)
T
Acquisition
(
s)
00XXX010
17.00
58.50
100.00
36.00
00XXX011
16.10
52.50
89.00
37.00
00XXX100
15.17
49.00
82.80
38.00
00XXX101
14.25
45.00
76.50
39.00
00XXX110
13.33
41.50
70.30
40.00
00XXX111
12.40
38.00
64.00
41.00
01XXX000
12.20
36.75
61.30
43.75
01XXX001
12.10
35.00
58.00
46.50
01XXX010
11.90
33.00
54.30
49.25
01XXX011
11.70
31.30
51.00
52.00
01XXX100
11.10
30.00
49.40
54.75
01XXX101
10.50
29.15
47.80
57.50
01XXX110
10.00
28.10
46.20
60.25
01XXX111
9.40
27.00
44.60
63.00
10000XXX
9.20
26.25
43.30
65.40
10001XXX
9.00
25.65
42.30
67.80
10010XXX
8.80
25.00
41.30
70.10
10011XXX
8.60
24.45
40.30
72.50
10100XXX
8.40
23.70
39.00
74.90
10101XXX
8.10
22.90
37.70
77.30
10110XXX
7.90
22.20
36.50
79.60
10111XXX
7.70
21.50
35.20
82.00
11000XXX
7.60
20.80
34.00
84.30
11001XXX
7.45
20.10
32.80
86.50
11010XXX
7.30
19.45
31.60
88.80
11011XXX
7.20
18.85
30.50
91.00
11100XXX
6.60
18.30
30.00
93.30
11101XXX
6.00
17.70
29.40
95.50
11110XXX
5.50
17.10
28.60
97.80
11111XXX
5.00
16.50
28.00
100.00
Register 4
76543210
Min
(MHz)
System
Clock
Output
Frequency
(MHz)
NOM
Max
(MHz)
T
Acquisition
(
s)
00XXX010 10.50
73.00
135.00
36.00
00XXX011 10.00
68.00
126.00
37.00
00XXX100
9.50
63.00
117.00
38.00
00XXX101
9.10
58.50
108.00
39.00
00XXX110
8.60
53.80
99.00
40.00
00XXX111
8.10
49.00
90.00
41.00
01XXX000
7.80
47.70
87.50
43.80
01XXX001
7.60
46.30
85.00
46.50
01XXX010
7.30
45.00
82.50
49.30
01XXX011
7.10
43.60
80.00
52.00
01XXX100
6.80
42.10
77.50
55.00
01XXX101
6.50
40.75
75.00
57.50
01XXX110
6.30
39.40
72.50
60.30
01XXX111
6.00
38.00
70.00
63.00
10000XXX
5.90
37.40
68.80
65.40
10001XXX
5.90
36.70
67.50
67.80
10010XXX
5.80
36.00
66.30
70.10
10011XXX
5.80
35.40
65.00
72.50
10100XXX
5.70
35.00
63.80
74.90
10101XXX
5.60
34.10
62.50
77.30
10110XXX
5.60
33.50
61.30
79.60
10111XXX
5.50
32.80
60.00
82.00
11000XXX
5.40
32.10
58.80
84.30
11001XXX
5.40
31.50
57.50
86.50
11010XXX
5.30
30.70
56.30
88.80
11011XXX
5.30
30.10
55.00
91.00
11100XXX
5.20
29.50
53.80
93.30
11101XXX
5.10
28.80
52.50
95.50
11110XXX
5.10
28.20
51.30
97.80
11111XXX
5.00
27.50
50.00
100.00
Select
devices
have
been
discontinued.
See
Ordering
Information
section
for
product
status.