ICS91718 Datasheet, PDF (3/11 Pages) Integrated Circuit Systems – Low EMI, Spread Modulating, Clock Generator

Table 1: Frequency Configuration Table
(See I2C Byte 0)
14in/48out
14in/66out
48in/48out
66in/66out
FS4 FS3 FS2 FS1 FS0 Sprd Type Sprd %
00000
0.80
00001
1.00
0 0 0 1 0 DOWN
1.25
0 0 0 1 1 SPREAD 1.50
00100
(-)
1.75
00101
2.00
00110
2.50
00111
0.60
0 1 0 0 0 CENTER 1.00
0 1 0 0 1 SPREAD 1.25
01010
(+/-)
1.50
01011
2.00
0 1 1 0 0 _DOWN
1.25
0 1 1 0 1 _SPREAD 1.00
01110
(-)
1.50
01111
2.00
10000
0.80
10001
1.00
1
1
0
0
0
0
1
1
0
1
DOWN
SPREAD
1.25
1.50
10100
(-)
1.75
10101
2.00
10110
2.50
10111
3.00
11000
0.30
11001
0.40
1 1 0 1 0 _CENTER 0.50
1 1 0 1 1 _SPREAD 0.60
11100
(+/-)
0.80
11101
1.00
11110
1.25
11111
1.50
For 14.318 in 48.008 out default is…..00001
For 14.318 in 66.66 out default is……01101
For 48/48 and 66/66 default is……….10001
0500D—07/15/04
3
ICS91718