• State
  • Locked Locked
  • Replies 6 replies
  • Subscribers 46 subscribers
  • Views 733 views
  • Users 0 members are here
Support feedback
Options
Options
Related

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

change TSW30SH84 setting to 614.4MSPS

Ruikang Yang
Intellectual 280 points

Hi there,

The default setting with TSW30SH84 is 2x 737.28MSPS. I'd like to change to 2x 614.4MSPS. Where should I change in the control panel?

Thanks,

Ruikang

  • 0
    TI__Genius 9695 points

    Hi RuiKang,

     

    If you are using an external clock, you have to change the frequency of the clock source to 614.4MSPS. Afterwards, in HSDCPRO software, change the data rate to 307.2MSPS to match the new output rate.

     

    Thanks,

    Eben. 

  • 0 in reply to Ebenezer Dwobeng
    Intellectual 280 points

    Hi Eden,

    No, I do not use external clock. From the diagram CLK4 from LMK0480 provide DAC clock, do I just need to change the data clock from 1474.56M (2x737.28) to 1228.8M (2x614.4M)? question is how do I change in LMK0480 control panel?

    Thanks,

    Ruikang

  • 0 in reply to Ruikang Yang
    TI__Genius 9695 points

    Hi RuiKang,

    You will have to change this from the LMK04800 tab, click on the Advanced settings button and change the PLL2 settings as follows: Ref Divider = 125, N Divider= 3840, Prescalar = 8, 2x REF = Frequency Normal. The attached settings file should already have this configured.

    Thanks,

    Eben.

    Fullscreen DAC34SH84_1228p8MHz_2xINT_NCO_30MHz_single_sync_source_mode.txt Download 
       x00	x319C
   x01	x040E
   x02	x7052
   x03	xA000
   x04	xFFFF
   x05	x0000
   x06	x3900
   x07	xFFFF
   x08	x0000
   x09	x8000
   x0A	x0000
   x0B	x0000
   x0C	x05A6
   x0D	x05A6
   x0E	x05A6
   x0F	x05A6
   x10	x0000
   x11	x0000
   x12	x0000
   x13	x0000
   x14	x5555
   x15	x0535
   x16	x5555
   x17	x0535
   x18	x280F
   x19	x0840
   x1A	x0020
   x1B	x0800
   x1C	x0000
   x1D	x0000
   x1E	x1111
   x1F	x8882
   x20	x8801
   x22	x1B1B
   x23	x07FF
   x24	x1000
   x25	x7A78
   x26	xB6B6
   x27	xEAEA
   x28	x4545
   x29	x1A1A
   x2A	x1616
   x2B	xAAAA
   x2C	xC6C6
   x2D	x0004
   x2E	x0000
   x2F	x0000
   x30	x0000
   x7F	x0000
LMK REGISTERS
   x00	x4000000
   x01	x0000020
   x02	x0000002
   x03	x0000064
   x04	x0000010
   x05	x4000020
   x06	x2800000
   x07	x0402800
   x08	x0008800
   x0A	x48A0210
   x0B	x1BF8880
   x0C	x098600D
   x0D	x1D81033
   x0E	x0900000
   x0F	x4000400
   x10	x00AA820
   x18	x0000006
   x19	x0080800
   x1A	x47D18E0
   x1B	x08000C1
   x1C	x03E8180
   x1D	x0000F00
   x1E	x0000F00
ATTENUATOR AB
0.00
ATTENUATOR CD
0.00

  • 0 in reply to Ebenezer Dwobeng
    Intellectual 280 points
    Eden,

    It works and Thanks.

    Ruikang
  • 0 in reply to Ebenezer Dwobeng
    Intellectual 280 points

    Eben,

    In my previous email I said the setup file is working. But I just found the LMK LOCK LED is off. The setup seems ok as the signal bandwidth is where it suppose to be. It just the LMKLOCK LED is off make me wonder something is wrong.

    Thanks,

    Ruikang

  • 0 in reply to Ruikang Yang
    TI__Genius 9695 points

    Hi Ruikang,

    I am looking into this and will update you later.

    Thanks,

    Eben.