OMAP3530ECUS72 datasheet(197/265 Pages) TI1

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dss_pclk

dss_vsync

dss_hsync

dss_acbias

dss_data[23:0]

DL4

DL5

DL3

DL0

DL2

DL1

030-061

OMAP3530, OMAP3525

www.ti.com

SPRS507H – FEBRUARY 2008 – REVISED OCTOBER 2013

Figure 6-28. LCD Display in TFT Mode – HDTV Application(1) (2) (3) (4)

(1) The pixel data bus depends on the use of 8-, 9-, 12-, 16-, 18-, or 24-bit per pixel data output pins.

(2) The pixel clock frequency is programmable.

(3) All timings not illustrated in the waveform are programmable by software, control signal polarity, and driven edge of dss_pclk.

(4) For more information, see the DSS chapter in the OMAP35x Technical Reference Manual (TRM) [literature number SPRUF98].

6.5.2.1.2 LCD Display in STN Mode

Table 6-38 assumes testing over the recommended operating conditions (see Figure 6-29).

Table 6-38. LCD Display Switching Characteristics in STN Mode(3) (4) (5)

NO.

PARAMETER

OPP3

OPP2

UNIT

MIN

MAX

MIN

MAX

DL3

td(PCLKA-DATAV)

Delay time, dss_pclk active edge to dss_data

–6.9

6.9

–6.9

6.9

bus valid

DL4

tc(PCLK)

Cycle time(2), dss_pclk

22.727

DL5

tw(PCLK)

Pulse duration, dss_pclk low or high

0.45*P(1)

0.55*P(1)

0.45*P(1)

0.55*P(1)

(1) P = dss_pclk period.

(2) The pixel clock frequency is software programmable via the pixel clock divider configuration from 1 to 255 division range in the

DISPC_DIVISOR register.

(3) The DSS in STN mode is used with 4 or 8 pins only; unused pixel data bits always remain low.

(4) The capacitive load is equivalent to 40 pF.

(5) For more information, see the DSS chapter in the OMAP35x Technical Reference Manual (TRM) [literature number SPRUF98].

TIMING REQUIREMENTS AND SWITCHING CHARACTERISTICS

197

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