ISD3900
Publication Release Date: Dec 10, 2013
- 32 -
Revision 1.5
Table 10-3 Common Crystal Frequency Settings
Xtal (MHz)
M
N
Fs (kHz)
1.024
1
32
32
2.048
2
32
32
3.072
3
32
32
4.096
2
16
32
6.144
3
16
32
8.192
2
8
32
12.288
3
8
32
1.4112
1
32
44.1
2.8224
2
32
44.1
4.2336
3
32
44.1
5.6448
2
16
44.1
8.4672
3
16
44.1
11.2896
2
8
44.1
16.9344
3
8
44.1
1.536
1
32
48
3.072
2
32
48
4.608
3
32
48
6.144
2
16
48
9.216
3
16
48
12.288
2
8
48
18.432
3
8
48
In addition to the above crystals, to achieve standard audio sampling rates, other frequencies could be
used that would produce different sample rates. For instance if the user wishes to use the standard
USB clock rates of 6 or 12MHz the following master sample rates could be achieved.
Table 10-4 USB Crystal Master Sample Rates
Xtal (MHz)
M
N
Fs (kHz)
12
2
8
46.875
12
3
8
31.25
6
3
16
31.25
6
2
16
46.875
