Upgrade from ADAU1701 to 6 or 7 stereo I2S inputs

Question

I need to connect the DSP to a raspberry PI and the PI can only do I2S (in and out) at 48k and no TDM 
 There are also 2 TI TLV320ADC6140 ADC's both capable of I2S and TDM 
 And we run out of instructions on the 1701 so we need also more instructions (about double of the 1701) 
 is the ADAU1445 a solution ? 
 
 Benno

DaveThib · Accepted Answer

Hello Benno, 
 
 So you need one I2S, and either two TDM4 or one TDM8 inputs. Your earlier post made it seem like you needed 6 or 7 I2S lines which cannot be done with the ADAU452. It can only do four I2S inputs. It can also do 4 TDM inputs so it can certainly handle the one I2S and one or two TDM lines with no problem. 
 The ADAU1467 has more pins and has assignable pins to solve the issue of only being able to take in 4 I2S lines. So that is why I suggested that part. It is very close to the 1452 but it has more memory, faster SPDIF, the serial ports expansion pins, 8 AUXADCs instead of six, and more GPIO. 
 So use the ADAU1452 family of parts. 
 Dave T)

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Upgrade from ADAU1701 to 6 or 7 stereo I2S inputs

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