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.

TMS570LS3134: Emulation of digital video data using N2HET as signal generator

Part Number: TMS570LS3134

I am wondering if it is possible to emulate a video port with the N2HET. Therefore N2HET would need to generate the following signals: 

PCLK (pixel clock) ~ 20 MHz, basically a PWM, 50% duty cycle.

VOUT_D0 to VOUT_D7 (video parallel data, 8bit) value might change each PCLK.

HSNYC (reflecting a video line, occurs after 576 PCLK).
YSYNC (reflecting a video frame, occurs after 576 HSYNC).

 All must be in sync with PCLK.

  • Hello Ejs,

    I don' think we can do it with NHET. The maximum system clock is 180 Mhz, and the maximum HR clock is 90MHz. If you want to simply generate 11 PWM signals with different periods and duty cycles, we need at lease 4 instructions for each PWM (PWM, duty cycle, and their update), so more than 40 instructions are needed. If 40 instructions are used, the maximum Loop frequency (1/LRP) is 90MHz/64 which is much slower than 20MHz.