ICS9248F-169-T Просмотр технического описания (PDF) - Integrated Circuit Systems
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ICS9248F-169-T
Integrated Circuit Systems
ICS9248F-169-T Datasheet PDF : 14 Pages
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ICS9248-169
Serial Configuration Command Bitmap
Byte0: Functionality and Frequency Select Register (default = 0)
Bit
Bit 2,
Bit 7:4
Bit 3
Bit 1
Bit 0
Description
Bit (2, 7, 6, 5, 4)
CPUCLK
(MHz)
PCICLK
(MHz)
00000
80.00
40.00
0000 1
75.00
37.50
000 10
83.31
41.65
000 11
66.82
33.41
00 100
103.00
34.33
00 10 1
112.01
37.34
00 110
68.01
34.01
00 111
100.23
33.41
0 1000
120.00
40.00
0 100 1
114.99
38.33
0 10 10
109.99
36.66
0 10 11
105.00
35.00
0 1100
140.00
35.00
0 110 1
150.00
37.50
0 1110
124.00
31.00
0 1111
133.33
33.33
10 0 0 0
135.00
33.75
1000 1
129.99
32.50
100 10
126.00
31.50
100 11
118.00
39.33
10 100
115.98
38.66
10 10 1
95.00
31.67
10 110
90.00
30.00
10 111
85.01
28.34
1 10 0 0
166.00
41.50
1100 1
160.01
40.00
110 10
154.99
38.75
110 11
147.95
36.99
1 1 10 0
145.98
36.50
1110 1
143.98
35.99
1 1 1 10
141.99
35.50
11111
138.01
34.50
0 - Frequency is selected by hardware select, Latched Inputs
1 - Frequency is selected by Bit 2, 7:4
0 - Normal
1 - Spread Spectrum Enabled ± 0.50% Center Spread
0 - Running
1- Tristate all outputs
PWD
00101
Note1
0
1
0
Note1: Default at power-up will be for latched logic inputs to define frequency, as displayed by Bit 3.
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