24-bit, 192 kHz ADC with PCM4202 and DIT4192/CS8406 - diyAudio
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Old 21st November 2015, 08:17 PM   #1
Gunders is offline Gunders  Norway
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Default 24-bit, 192 kHz ADC with PCM4202 and DIT4192/CS8406

I have started a project where I am going to build an analog-to-digital converter for my record player and amplifier. The ADC will be based on around Texas Instruments PCM4202 24-bit ADC and DIT4192 or CS8406 digital transmitter. I have made a simplified overview of the ADC and will quite soon start with the design and drawing the schematic.

I will certainly have some questions during the design and layout phase, and I start easy with my first one regarding master/slave operation of DIT4192/CS8406. I will set the PCM4202 in Master Mode and I then assume it is right to set DIT4192/CS8406 in Slave Mode. SYNC and SCLK at the DIT4192/CS8406 will then be inputs and receive clock information from PCM4202. I am right in my assumption? Or should DIT4192/CS8406 be put in Slave Mode only when multiple DIT4192/CS8406 are working in parallel where one of them is the master and the rest are slaves.
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Old 22nd November 2015, 02:59 AM   #2
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All that really matters is only one device on the I2S link drives the net; otherwise they contend (and probably eventually one device fries). As you're not locked on a SPDIF transmitter it may be worth considering parts, such as the WM8804 and 8805, which include crystal drivers and some MCLK distribution.
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Old 22nd November 2015, 06:36 PM   #3
Gunders is offline Gunders  Norway
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Thank you for your help. I will go for the ADC as Master and transmitter as Slave.
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