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Old 29th July 2013, 06:57 PM   #1
djwenne is offline djwenne  Germany
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Default 16bit i2s 48khz Source to SRC4192

Hi,
i have an Audio Source 16bit 12S 48 khz and want convert this to 44.1 khz. I know i must use an SRC like the 4192 from TI.

On the Datasheet i cant find any settings for an 16 Bit I2S source.

Works 24bit i2S?
Any Idea how to do this? Thanks...
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Old 29th July 2013, 10:40 PM   #2
wa2ise is offline wa2ise  United States
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You could stuff zeros for the 8 least significant bits, to make the 16 bits look like a 24 bit signal. Assuming the data rate conversion uses a "poly phase filter", most if not all of the new samples will be 24 bits, the 8 LSBs not all zeros.
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Old 30th July 2013, 03:41 PM   #3
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Default Hi from a fellow ham

Quote:
Originally Posted by wa2ise View Post
You could stuff zeros for the 8 least significant bits, to make the 16 bits look like a 24 bit signal. Assuming the data rate conversion uses a "poly phase filter", most if not all of the new samples will be 24 bits, the 8 LSBs not all zeros.
Off topic... Hello from AB0N
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Old 30th July 2013, 11:30 PM   #4
djwenne is offline djwenne  Germany
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Default Problem Fixed

Hi again,
i found it out. The SCR 4190/ 4192 works in I2S Mode from 16 bit to 24 bit.
It`s not necessary to do something self :-)

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