TDA2: Use vout1_fld as Vin3a_clk0

JP Park95

Part Number: TDA2

Hi,

We will use Vin3a pin and vout1 pin like below.

- Will use Display output Pin with discrete sync mode - vout1_clk (ball : D11), vout1_d0(ball : F11)...... vout1_d22(ball : B9). vout1_d23(ball : A10), vout1_de(ball : B10), vout1_hsync(ball : C11), out1_vsync(ball : E11),

- We want to use vout1_fld as Vin3a_clk0 of VIN3A. - VIN3A Input : Vin3a_clk0 (ball : B11),vout3_d0(ball : M6), vout3_d1(ball : M2)....

Can I use the vout1_fld pin as the Vin3a_clk0 pin of VIN3A while using the display output pin(vout1) with discrete sync mode?

Regards

JP Park

over 8 years ago

0 Brijesh Jadav over 8 years ago

TI__Guru**** 504345 points

Hi JP,

Please check the pinmux sheet, it will tell what is possible.

Rgds,
Brijesh

0 JP Park95 over 8 years ago in reply to Brijesh Jadav

Expert 1100 points

Hi Brijesh,
I have checked that pinmux is possible with vout1_fld pin(MUXMODE 0) to Vin3a_clk0 pin(MUXMODE 4) : (ball : B11)

I want to know if it can be used as an Vin3a_clk0 pin of VIN3A while using the display output pin(vout1) with discrete sync mode?
Regards

JP Park

0 Brijesh Jadav over 8 years ago in reply to JP Park95

TI__Guru**** 504345 points

Hi JP,

The same pin cannot be used for two purpose.

Rgds,
Brijesh

0 JP Park95 over 8 years ago in reply to Brijesh Jadav

Expert 1100 points

Hi Brijesh,

I think there is some confusion.
The same pin is not used for two purpose.

Will use the vout1_clk (ball : D11), vout1_d0(ball : F11)...... vout1_d22(ball : B9). vout1_d23(ball : A10) .... for display output except for vout1_fld pin.

Will use vout1_fld pin as Vin3a_clk0 (Set to MUX MODE4 for use with Vin3a_clk0) for Vin3a.

I will use vout1_fld pin as Vin3a_clk0 function for Vin3a instead of vout1_fld function for display output.

Is this possible?

I'm sorry, I would like to ask you again.
Regards

JP Park

0 Brijesh Jadav over 8 years ago in reply to JP Park95

TI__Guru**** 504345 points

Hi JP,

Yes, it looks fine to me, if your display is progressive, there is no need for the fld output and fld pin can be used for the different purpose.

Rgds,

Brijesh

0 JP Park95 over 8 years ago in reply to Brijesh Jadav

Expert 1100 points

Hi Brijesh,

Thanks for your reply.
Thanks to you, the problem is solved.

Regards
JPPark

0 JP Park95 over 8 years ago in reply to JP Park95

Expert 1100 points

Hi Brijesh,

We had plan to use the vin3a pins as shown below, but looking at the IOSET view of the pad conf tool, it seemed that ball B11 could not be used for the vin3a_clk0 pin function.

Is it possible using differrent IOSET Pin ?

Regards

JP Park

0 Brijesh Jadav over 8 years ago in reply to JP Park95

TI__Guru**** 504345 points

Hi Park,

Which SoC are you using? On TDA2x, i see there are three pins which can be used for VIN3A_CLK input. These are CTRL_CORE_PAD_GPMC_CS3, CTRL_CORE_PAD_VIN1B_CLK1 and CTRL_CORE_PAD_VOUT1_FLD.

Regards,

Brijesh

0 JP Park95 over 8 years ago in reply to Brijesh Jadav

Expert 1100 points

Hi Brijesh,

Thank you for your quick reply.
Yes, I am using TDA2x.
I know that there are other pins for VIN3A_CLK .

I want to know if it is possible using together IOSET1 (Ball M6 for vin3a_D0,Ball M2 for vin3a_D1 ) and IOSET4 (Ball B11 for vin3a_clk0) for vin3a pins.

Regards,

0 Alex Bashkov over 8 years ago in reply to JP Park95

TI__Genius 14190 points

JP Park95,

Suggest you try the pin mux tool (https://dev.ti.com/pinmux). It will show you clearly with warnings/errors what's possible and what not.

thanks

Alex

0 Alex Bashkov over 8 years ago in reply to Alex Bashkov

TI__Genius 14190 points

In addition, I see from your previous post you are using our other NDA tool (the Pad Config Tool), which is fine too, but more recently we have migrated devices to the public pinmux tool I mentioned (which will give you same warnings about the ioset violation).

Basically, if you violate and mix iosets you are risking to not meet the ioset's timing. The device has been characterized with these precise iosets to meet the timing requirements, switching characteristics, and iodelay manual/virtual modes. Here is the excerpt from the datasheet:

CAUTION: The IO timings provided in this section are applicable for all combinations of
signals for vin1. However, the timings are only valid for vin2, vin3, and vin4 if
signals within a single IOSET are used. The IOSETs are defined in the Table 7-
4, Table 7-5 and Table 7-6.

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TDA2: Use vout1_fld as Vin3a_clk0