AK7735EQ Datasheet, PDF (107/142 Pages) Asahi Kasei Microsystems – Dual DSP with 4chADC + 4chDAC + 4chSRC

[AK7735]
■ SRC Block
1. Sampling Rate
The AK7735 includes two stereo digital sampling rate converters (SRC). The input sampling rate (FSI)
and the output sampling rate (FSO) are supported from 8kHz to 192kHz. Available sampling rate ratio is
FSO/FSI = 0.167~6.0.
1-1. Up Sampling (1.00  FSO/FSI  6.00)
Supported sampling rates are shown below. (Passband and Stopband are proportional to FSI when the
FSO/FSI ratios are same.)
FSO
192kHz
48kHz
48kHz
48kHz
48kHz
48kHz
48kHz
48kHz
192kHz
44.1kHz
44.1kHz
44.1kHz
44.1kHz
44.1kHz
44.1kHz
16kHz
16kHz
8kHz
FSI FSO/FSI Passband
48kHz
4.00 22.00kHz
48kHz
1.00 22.00kHz
44.1kHz 1.09 20.21kHz
32kHz
1.50 14.67kHz
24kHz
2.00 11.00kHz
16kHz
3.00
7.33kHz
12kHz
4.00
5.50kHz
8kHz
6.00 3.67kHz
44.1kHz 4.35 20.21kHz
44.1kHz 1.00 20.21kHz
32kHz
1.38 14.67kHz
24kHz
1.84 11.00kHz
16kHz
2.76
7.33kHz
12kHz
3.68
5.50kHz
8kHz
5.51 3.67kHz
16kHz
1.00
7.33kHz
8kHz
2.00 3.67kHz
8kHz
1.00 3.67kHz
Table 63. Up Sampling Example
Stopband
26.00kHz
26.00kHz
23.89kHz
17.33kHz
13.00kHz
8.67kHz
6.50kHz
4.33kHz
23.89kHz
23.89kHz
17.33kHz
13.00kHz
8.67kHz
6.50kHz
4.33kHz
8.67kHz
4.33kHz
4.33kHz
016014707-E-00
- 107 -
2016/12