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ADV7482 I2S MUTE ISSUE

Question asked by razavimday on Aug 9, 2017
Latest reply on Aug 22, 2017 by mattp

Background,

1. no EVB in hands

2. no I2S_MCLK output, when play *.MP4 video

3. HDMI RX is ok, share the scripts of A8,platform is R

4.refer to V3.6 Scripts from ADI website #1-29/#1-30

5.refer nearly all the chapter of design materials about I2S part

ADV748x_Eval_Board_UG_RevPrB-26-09-2013

ADV748x_HardwareManual_RevPrB_2014-07-11

ADV748x_Recommended_Settings_PrA_2014-08-20

ADV7481_ADV7482_ES3C-VER.3.6c.txt

ADV7481_UG-747

HDMI_RX_FAQ V1.0

https://ez.analog.com/docs/DOC-16503

 

My Question:

1.when we write EDID REG, 0X05 IN HDMI RX MAP showed DVI mode(0x05 30), it means no sound output.

need your help to create EDID of ADV7482 to us, We download EDID 0.97, no hints for us to fill in the blanks

EDID has some setups in CEA, which is used for audio we think.

https://ez.analog.com/docs/DOC-2143

 

2.when we don't write EDID REG, 0X05 IN HDMI RX MAP showed HDVI mode to us(0x05 B0)

please help us to check the below REG, which we have read REG in field.

No EDID

HDMI RX

34 0x04 23

34 0x05 B0

34 0X6E 04

34 0X6D 04

34 0X07 A7

34 0X1A 80

34 0X14 3F

 

IO MAP

70 0X6C 01

70 0x65 00

 

DPLL MAP

26 0XB5 01 //256fs

 

If EDID

34 0x05 30

 

Could you give some advice, thank you very much.

mattp

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