LPC Microcontrollers中的主题 Re: LPC4337 and NAU8822LYG codec

LPC4337 and NAU8822LYG codec

moller — Fri, 11 Nov 2016 13:07:29 GMT

Hello there.
First time working with I2S on an ARM processor. I am using an LPC4337 (LBGA256) and want to use the NAU8822LYG CODEC.
This codec has;
MCLK
BCLK
FS
DACIN
ADCOUT
The UM19503 manual states two kinds of 4-wire operating modes (transmitter mode and receiver mode).
I am very much in doubt how to connect these 5 I2S pins from the CODEC to my processor. (I want to use I2S0).
I assume MCLK and BCLK can be combined. Any help would be welcomed!

Thanks in advance.

Re: LPC4337 and NAU8822LYG codec

bernhardfink — Tue, 15 Nov 2016 13:49:00 GMT

MCLK does not belong to the I2S interface definition. See more info to this pin in chapter 8 of the NAU8822 data sheet.

MCLK - master clock for the CODEC device

BCLK - bit clock of the I2S data

FS - frame sync signal

DACIN - data input of the CODEC device
ADCOUT - data output of the CODEC device

Re: LPC4337 and NAU8822LYG codec

moller — Mon, 28 Nov 2016 08:51:43 GMT

Hello and thanks for your answer.

I do have a hard time figuring out the connections from BCLK, FS, DACIN and ADCOUT to the LPC43xx processor. I can see there are many ways of doing 4-wire setups but none of them makes any sense to me and gives answer to which pin goes to BCLK etc.

Kind regards