Cypress CY25566 manual MHz High Range, S1 = S1 = M MHz S0 = M, S1 = M MHz S0 = M S0 =0

CY25566

Table 1. Frequency and Bandwidth Selection Chart (Group 1)(Low Frequency (1x) Selection Chart)

		25–50 MHz (Low Range)
XIN/CLK	S1 = M		S1 = M	S1 = 1	S1 = 0	S1 = 0
(MHz)	S0 = M		S0 = 0	S0 = 0	S0 = 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
								S3	S2
40–45	3.7		3.3	2.8	2.4	2.3
							0		0
45–50	3.4		3.1	2.6	2.2	2.1
		50–100 MHz (High Range)
XIN/CLK	S1 = 1		S1 = 0	S1 = 1	S1 = M
(MHz)	S0 = M		S0 = 1	S0 = 1	S0 = 1
50–60	2.9		2.1	1.5	1.2
60–70	2.8		2.0	1.4	1.1
								S3	S2
70–80	2.6		1.8	1.3	1.1
								0	0
80–100	2.4		1.7	1.2	1.0

Table 2. Frequency and Bandwidth Selection Chart (Group 2)(High Frequency (1x) Selection Chart)

		50–100 MHz (Low Range)
XIN/CLK	S1 = M		S1 = M	S1 = 1	S1 = 0	S1 = 0
(MHz)	S0 = M		S0 =0	S0 = 0	S0 = 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
							S3	S2
80–100	3.5		3.1	2.7	2.2	2.1
							1	0
		100–200 MHz (High Range)
XIN/CLK	S1 = 1		S1 = 0	S1 = 1	S1 = M
(MHz)	S0 = M		S0 = 1	S0 = 1	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
							S3	S2
160–170	2.4		1.8	1.2	1.0
							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

Table 3. Frequency and Bandwidth Selection Chart (Group 3)(Low Frequency (2x) Selection Chart)

25–50 MHz (Low Range, 2X)

XIN/CLK	SSCLK1	S1 = M	S1 = M	S1 = 1	S1 = 0	S1 = 0
(MHz)	(MHz)	S0 = M	S0 = 0	S0 = 0	S0 = 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
0	1

Document #: 38-07429 Rev. *B Page 5 of 9

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