Forum

      • Si4713+I2S reference clock generation from DCLK

        Recep Onur Yıldız | 09/262/2018 | 10:24 AM

        Hello,

        I am using si4713 with custom board. The board is working good in analog audio input mode. What i want to do is operating si4713 in digital audio input mode. So, i change the layout in my board according to the datasheet. Also, i changed some of the registers' value. The frequency of DCLK is 2.84 MHz and the frequency of REFCLK_FREQ = 32.768 kHz.

        • Power up command's ARG1 = 0x02      ARG2 = 0x0F
        • REFCLK_PRESCALE value is 0x1056
        • DIGITAL_INPUT_SAMPLE_RATE value is 0xBB80
        • DIGITAL_INPUT_FORMAT value 0x0002

        I am trying to generate REFCLK from DCLK. I measure the DCLK pin and it has 3.5 Vpp with 1.75V offset and the frequency of square wave is 2.84 MHz. Do you have any idea?

        Best Regards,

        Recep Onur

        • Si4713
        • Discussion Forums
        2
        Replies
        Unanswered
      • SI468x DAB Firmware Update

        Ole Jepsen | 09/253/2018 | 05:10 AM

        Hello,

        we currently use the SI4688 with the DAB firmware 6.0.5.
        Is there already a newer version?

        Thank you in advance

        • Discussion Forums
        • Interface
        3
        Replies
        Unanswered
      • Where Can I get the full product data sheet of Si4685-A10

        Nagaraju Rachakonda | 08/241/2018 | 07:05 AM

        I could only download the data short but not the complete design data sheet. I would want to know the current consumption of this SoC in different mode and also maximum current. please help.

        -Naga

        • Discussion Forums
        1
        Replies
        Unanswered
      • Strange NVSCLK signal on Si4684

        PM | 08/230/2018 | 03:35 AM
        Hi,
        I have a prototype PCB with the Si4684 chip, that I will be using as a DAB receiver, with an external flash chip (MX25L1606EM1I-12G) directly connected to the NVSPI interface. I am following the flowchart for loading firmware in AN649. Everything is good (no errors, cts OK and bootloader running), until I try to load the FW from the external flash memory using the FLASH_LOAD command. The following rd_reply returns a error status bit (first byte 0xc0), but no error code (first data byte is 0x00). Connecting an osciloscope to the clock line (NVSCLK) shows that there is some sort of clock signal present (see attached images), but it does not reach any digital levels. Changing the SPI mode correctly changes the polarity of the clock, without improving the signal quality. Neither does changing the NVSPI frequency. Has anyone experienced something similar, or any thoughts about what might be wrong?
        NVSCLK - yellow, NVSSB - green, 1V/div (-2V offset) , 4us/div. Triggered after FLASH_LOAD command.

         

         

         

         

         

         

         

         

         

         

        The chip-select signal (NVSSB) looks correct (goes from 3V to 0V), however the clock (NVSCLK) oscillates between 0.5V and 1V at about 2.75 MHz (regardless of NVSPI settings). The NVMOSI line also looks strange.

        Best regards

        Finn

        • Discussion Forums
        3
        Replies
        Unanswered
      • Any updated version of AN649?

        colman | 08/220/2018 | 12:57 AM

        I am using si4684 DAB firmware v5.0.9, and I only have si468x programming guide v1.8, is there any update version of programming guide for dab firmware v5.0.9?

        Regards,

        Colman

        • Proprietary
        • Discussion Forums
        2
        Replies
        Unanswered
      • Confused about IIS interface on Si473x

        aweatherguy | 07/208/2018 | 01:14 PM

        I am confused about the operation of I2S interface on Si473x parts when used in digital audio output mode.

        Both DFS and DCLK (aka GPIO3) are inputs to the part and DOUT is an output which contains the digital audio data in this mode, correct?

        If so, the client supplies both data clock and channel selection (Left/Right) flag.

        What I don't understand is how this synchronizes with the Si473x internal audio sample rate.

          - What happens if an additional toggle occurs on the DFS line before a new audio sample is available?
          - How is the client supposed to know when new audio samples become available?

         

        • Proprietary
        • Discussion Forums
        2
        Replies
        Unanswered
      • SI468x DAB_GET_COMPONENT_INFO question

        Thomas Götz | 07/197/2018 | 06:13 AM

        Hello,

        AN649 Rev. 2.0 Table 16. describes the DAB_GET_COMPONENT_INFO response and has an Align Pad after Num μA, while the same AN649 on page 198 has none after RESP26

        the results of CMD 0xBB are these :

        KULTRADIO
        Component Info:: len:64
        hexdump of 64 bytes
          0000  80 80 00 c0 00 00 00 00 00 00 00 00 00 00 00 00  ................
          0010  00 00 00 00 00 00 00 00 00 00 02 10 02 00 02 0c  ................
          0020  3c 3c 00 00 00 09 00 00 64 f4 a1 7e 74 f4 a1 7e  <<......d..~t..~
          0030  74 f4 a1 7e 58 f4 a1 7e 00 00 00 00 00 09 00 00  t..~X..~........

         Component Info:UADATA: len:2
        hexdump of calculated UADATA
          0000  0c 3c                                            .<

        DAB Component Info:-----------------
        GLOBAL_ID:  0
        LANG:       0
        CHARSETID:  0
        LABEL:
        CHAR_ABREV: 0
        NUMUA:      2
        LENUA:      16
        UATYPE:     2
        UADATALEN:  2
        UAData :: len:2
          0000  0c 3c               

        same here:

        ANTENNE BAYERN
        Component Info:: len:64
          0000  90 80 00 c0 00 00 00 00 00 00 00 00 00 00 00 00  ................
          0010  00 00 00 00 00 00 00 00 00 00 03 16 02 00 02 0c  ................
          0020  3c 3c 00 00 00 04 00 00 6c f4 a1 7e 00 78 82 01  <<......l..~.x..
          0030  00 76 82 01 58 f4 a1 7e 00 00 00 00 00 04 00 00  .v..X..~........
         Component Info:UADATA: len:2
          0000  0c 3c                                            .<

        DAB Component Info:-----------------
        GLOBAL_ID:  0
        LANG:       0
        CHARSETID:  0
        LABEL:
        CHAR_ABREV: 0
        NUMUA:      3
        LENUA:      22
        UATYPE:     2
        UADATALEN:  2
        UAData :: len:2
          0000  0c 3c           

        Since both KULTRADIO and ANTENNE BAYERN have Slideshow and Journaline, I assumed i could find here 0x3c and 0x44a as Component Info ? Am I wrong?

        BR

        Tom

         

        • Discussion Forums
        3
        Replies
        Unanswered
      • Si4688 firmware package

        Ronny Michael | 07/191/2018 | 12:10 PM

        Where can I find the firmware for the SI4688. I only need DAB +.

        Greetings Stromie

        • Discussion Forums
        1
        Replies
        Unanswered
      • SI3210 si3201

        rohou jean luc | 05/127/2018 | 08:47 AM

        Hello I am using si3210 and si3201 in pabx. and it is diffcult to buy this. 

        It is the end of live for si3210 and si3201?

        Do you have another solution? I'am using PCM interface.

        Best regards

        ROHOU Jean Luc

        didalab

        • Discussion Forums
        1
        Replies
        Unanswered
      • Si4713 power can't be more than 100dbuv

        baz doo | 04/115/2018 | 06:19 AM

        The Si4713 output amplitude is programmable from 88dBuV to 120dBuV,but  when I use the field intensity meter to measure the power can't be more than 100dbuv  .I want to know how measure it.

         

        thank you

        • Discussion Forums
        2
        Replies
        Unanswered