Cypress CY25566 User Manual
Page 5
CY25566
Document #: 38-07429 Rev. *B
Page 5 of 9
Table 1. Frequency and Bandwidth Selection Chart (Group 1)(Low Frequency (1x) Selection Chart)
25–50 MHz (Low Range)
XIN/CLK
(MHz)
S1 = M
S0 = M
S1 = M
S0 = 0
S1 = 1
S0 = 0
S1 = 0
S0 = 0
S1 = 0
S0 = M
25–35
4.3
3.8
3.4
2.9
2.8
35–40
3.9
3.5
3.1
2.5
2.4
40–45
3.7
3.3
2.8
2.4
2.3
45–50
3.4
3.1
2.6
2.2
2.1
50–100 MHz (High Range)
XIN/CLK
(MHz)
S1 = 1
S0 = M
S1 = 0
S0 = 1
S1 = 1
S0 = 1
S1 = M
S0 = 1
50–60
2.9
2.1
1.5
1.2
60–70
2.8
2.0
1.4
1.1
70–80
2.6
1.8
1.3
1.1
80–100
2.4
1.7
1.2
1.0
S3
S2
0
0
S3
S2
0
0
Table 2. Frequency and Bandwidth Selection Chart (Group 2)(High Frequency (1x) Selection Chart)
50–100 MHz (Low Range)
XIN/CLK
(MHz)
S1 = M
S0 = M
S1 = M
S0 =0
S1 = 1
S0 = 0
S1 = 0
S0 = 0
S1 = 0
S0 = M
50–60
4.2
3.8
3.2
2.8
2.7
60–70
4.0
3.6
3.1
2.6
2.5
70–80
3.8
3.4
2.9
2.5
2.4
80–100
3.5
3.1
2.7
2.2
2.1
100–200 MHz (High Range)
XIN/CLK
(MHz)
S1 = 1
S0 = M
S1 = 0
S0 = 1
S1 = 1
S0 = 1
S1 = M
S0 = 1
100–120
3.0
2.4
1.6
1.3
120–130
2.7
2.1
1.4
1.1
130–140
2.6
2.0
1.3
1.1
140–150
2.6
2.0
1.3
1.1
150–160
2.5
1.8
1.2
1.0
160–170
2.4
1.8
1.2
1.0
170–180
2.4 1.8 1.2
1.0
180–190
2.3
1.7
1.1
0.9
190–200
2.3
1.6
1.1
0.9
S3
S2
0
1
S3
S2
0
1
Table 3. Frequency and Bandwidth Selection Chart (Group 3)(Low Frequency (2x) Selection Chart)
25–50 MHz (Low Range, 2X)
XIN/CLK
(MHz)
SSCLK1
(MHz)
S1 = M
S0 = M
S1 = M
S0 = 0
S1 = 1
S0 = 0
S1 = 0
S0 = 0
S1 = 0
S0 = M
25–35
50-70
4.0
3.5
3.0
2.6
2.5
35–40
70-80
3.8
3.3
2.9
2.4
2.3
40–45
80-90
3.5
3.1
2.7
2.2
2.1
45–50
90-100
3.3
2.9
2.5
2.1
2.0
S3
S2
1
0