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| AM3517_12 Datasheet, PDF (100/222 Pages) Texas Instruments – ARM Microprocessors | |||
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AM3517, AM3505
SPRS550D â OCTOBER 2009 â REVISED MARCH 2012
www.ti.com
5 Video DAC Specifications
A dual-display interface equips the AM3517/05 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 AM3517/05 DAC architecture.
Device
TV DCT
tv_vfb1
DIN1[9:0]
Video DAC 1
TVOUT
BUFFER
DSS
DIN2[9:0]
Video DAC 2
tv_out1
tv_vfb2
TTVVOUUTT
BBUUFFFFEERR
tv_out2
vdda_dac vssa_dac
tv_vref
V_ref
CBG
Figure 5-1. Video DAC Architecture
030-018
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.
100 Video DAC Specifications
Copyright © 2009â2012, Texas Instruments Incorporated
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