ICS9248YF-90-T Ver la hoja de datos (PDF) - Integrated Circuit Systems
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ICS9248YF-90-T Datasheet PDF : 16 Pages
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ICS9248 - 90
Serial Configuration Command Bitmap
Byte0: Functionality and Frequency Select Register (default = 0)
Bit
Bit
(2, 7:4)
Bit 3
Bit 1
Bit 0
Description
Bit (2, 7:4)
CPUCLK
MHz
PCICLK
MHz
00000
66.82
33.40
0000 1
68.01
34.00
0 00 10
71.99
35.99
000 11
75.00
37.49
0 0 100
78.00
38.99
0 0 10 1
80.00
39.99
0 0 110
82.00
41.00
00 111
83.00
41.50
0 1000
84.00
41.99
0 100 1
85.01
42.50
0 10 10
85.91
42.95
0 10 11
86.99
43.49
0 1100
88.00
43.99
0 110 1
89.01
44.50
0 1110
90.00
44.99
0 1111
90.99
45.49
10 0 0 0
91.99
30.66
1000 1
93.07
31.02
100 10
94.00
31.33
100 11
95.00
31.66
10 100
96.00
31.99
10 10 1
97.01
32.33
10 110
98.01
32.67
10 111
98.99
32.99
1 1000
100.23
33.41
1 100 1
102.02
34.01
1 10 10
104.00
34.66
1 10 11
106.00
35.33
1 1100
108.01
36.00
1 110 1
109.99
36.66
1 1110
124.00
30.99
11111
132.99
33.25
0-Frequency is selected by hardware select, latched inputs
1-Frequency is selected by Bit 7:4,2
0- Normal
1- Spread spectrum enable
0- Running
1- Tristate all outputs
PWD
XXX
Note1
0
1
0
Note1: Default at power-up will be for latched logic inputs to define frequency, as displayed by Bit 3.
4
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