OMAP3530ECBC datasheet(147/264 Pages) TI1

147 / 264 page

VIDEO DAC SPECIFICATIONS

OMAP Device

DSS

tv_vref

DIN1[9:0]

vssa_dac

vdda_dac

VideoDAC 1

TVDCT

VideoDAC 2

TVOUT

BUFFER

DIN2[9:0]

TVOUT

BUFFER

TVOUT

BUFFER

tv_vfb1

tv_out1

CBG

tv_out2

tv_vfb2

V_ref

030-018

5.1 Interface Description

OMAP3530/25 Applications Processor

www.ti.com

SPRS507F – FEBRUARY 2008 – REVISED OCTOBER 2009

A dual-display interface equips the OMAP3530/25 processor. This display subsystem provides the

necessary control signals to interface the memory frame buffer directly to the external displays (TV-set).

Two (one per channel) 10-bit current steering DACs are inserted between the DSS and the TV set to

generate the video analog signal. One of the video DACs also includes TV detection and power-down

mode. Figure 5-1 illustrates the OMAP3530/25 DAC architecture. For more information, see the DSS

chapter of the OMAP35x Technical Reference Manual (TRM) [literature number SPRUF98].

Figure 5-1. Video DAC Architecture

The following paragraphs detail the 10-bit DAC interface pinout, static and dynamic specifications, and

noise requirements. The operating conditions and absolute maximum ratings are detailed in Table 5-2 and

Table 5-4.

Table 5-1 summarizes the external pins of the video DAC.

Table 5-1. External Pins of 10-bit Video DAC

PIN NAME

I/O

DESCRIPTION

tv_out1

TV analog output composite

DAC1 video output. An external resistor is connected between this

node and tv_vfb1. The nominal value of ROUT1 is 1650

Ω. Finally,

note that this is the output node that drives the load (75

Ω).

Submit Documentation Feedback

VIDEO DAC SPECIFICATIONS

147

OMAP3530ECBC 数据表(PDF) 147 Page - Texas Instruments

OMAP3530ECBC 数据表(HTML) 147 Page - Texas Instruments

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

数据表下载

链接网址

OMAP3530ECBC 数据表(PDF) 147 Page - Texas Instruments

OMAP3530ECBC 数据表(HTML) 147 Page - Texas Instruments

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

数据表 下载

链接网址

数据表下载