Simple LED display for DAC freq?

This solution do not solve my problem becouse i Need to have fs informations from i2s ( lrck bck data) and not from PIN 1 3 4 5 6 7 becouse i use also a cd transport (that not have those PIN) connected by RJ45 that feed my Dac .
 

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this is the greenpak configure software free from renesas. I used the 46826 device that is in-ciruit programmable with a cheap dongle.
there are many counters available that can be configured as frequency detect. the clock is 1.5% accurate , a 40 count gives a 20usec detect window for example, but can be set by filling in the counter data field. great stuff for quick tryouts, once you are fine with the design you can OTP program the device and it behaves as hardware.
 
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