Using ESAI_TX_HF_CLK as MCLK

JHY — Tue, 07 Jul 2015 09:34:55 GMT

1. There is no doubts, BCLK and LRCLK.

ESAI_TX_CLK -> BCLK

ESAI_TX_FS -> LRCLK

But MCLK is not sure.

Am I able to use ESAI_TX_HF_CLK as MCLK?

ESAI_TX_HF_CLK -> MCLK

2. ESAI_CLK_ROOT has max 66MHz frequency.

Is it applicalble to ESAI_TX_HF_CLK or not only ESAI_TX_CLK?

When ESAI_TX_HF_CLK is set output, what is max frequency?

Re: Using ESAI_TX_HF_CLK as MCLK

igorpadykov — Tue, 07 Jul 2015 14:36:42 GMT

HI JHY

1. as states sect.25.2.11 High Frequency Clock for Transmitter IMX6DQRM :

When programmed as output it can serve as a high frequency sample clock (to external DACs

for example) or as an additional system clock

2. according to Table 53. Enhanced Serial Audio Interface (ESAI) Timing IMX6DQCEC

ESAI_RX_HF_CLK/ESAI_TX_HF_CLK clock cycle = 15ns (min.)

Best regards

igor

-----------------------------------------------------------------------------------------------------------------------

Note: If this post answers your question, please click the Correct Answer button. Thank you!

-----------------------------------------------------------------------------------------------------------------------