Freescale Semiconductor Symphony DSP56724 Reference Manual page 309

By using different input and output paths, and different set-ups of the pre-filter, this ASRC scheme can be
used to handle different rate conversion requirements. See
Input Output
Config
Path Path
a I0 00
b I0 O1
c I0 O2
d I1 O0
e I1 O1
f I1 O2
g I2 O0
h I2 O1
i I2 O2
The suggested paths of the pre-processing and post-processing operations w.r.t the standard sampling rates
shown in Table 19-22.
Symphony DSP56724/DSP56725 Multi-Core Audio Processors, Rev. 0
Freescale Semiconductor
Table 19-21. Possible ASRC Configurations
The signal bandwidth observed before the polyphase filter is at most
The signal sampling rate of the polyphase filter output is
The signal bandwidth observed before the polyphase filter is at most
The signal sampling rate of the polyphase filter output is
The signal bandwidth observed before the polyphase filter is at most
The signal sampling rate of the polyphase filter output is
The signal bandwidth observed before the polyphase filter is at most
The signal sampling rate of the polyphase filter output is
The signal bandwidth observed before the polyphase filter is at most
The signal sampling rate of the polyphase filter output is
The signal bandwidth observed before the polyphase filter is at most
The signal sampling rate of the polyphase filter output is
The signal bandwidth observed before the polyphase filter is at most
The signal sampling rate of the polyphase filter output is
The signal bandwidth observed before the polyphase filter is at most
The signal sampling rate of the polyphase filter output is
The signal bandwidth observed before the polyphase filter is at most
The signal sampling rate of the polyphase filter output is
Asynchronous Sample Rate Converter
Table 19-21.
Description
Fs
=
ppout
Fs
=
ppout
Fs =
ppout
Fs
=
ppout
Fs =
ppout
Fs
=
ppout
Fs
=
ppout
Fs =
ppout
Fs
=
ppout
2 ⁄
BW = Fs .
in in
2 ⁄
Fs .
out
2 ⁄
BW Fs .
=
in in
Fs .
out
2 ⁄
BW = Fs .
in in
2Fs .
out
4 ⁄
BW Fs .
=
in in
2 ⁄
Fs .
out
4 ⁄
BW = Fs .
in in
Fs .
out
4 ⁄
BW Fs .
=
in in
2Fs .
out
8 ⁄
BW = Fs .
in in
2 ⁄
Fs .
out
8 ⁄
BW Fs .
=
in in
Fs .
out
8 ⁄
BW = Fs .
in in
2Fs .
out
19-29