OMAP4430 Datasheet, PDF (191/443 Pages) Texas Instruments – Multimedia Device

Public Version
OMAP4430
www.ti.com
5 Video DAC Specifications
SWPS041D – DECEMBER 2010 – REVISED JANUARY 2012
NOTE
For more information regarding the VideoDAC architecture, see the Display Subsystem /
Video Encoder / Video Encoder Functional Description / Video DAC section of the
OMAP4430 TRM.
5.1 TVOUT Buffer Mode (DAC + Buffer)
The connection for this TVOUT Buffer Mode (DAC + Buffer) normal mode of operation is shown in
Figure 5-1. The default mode of operation is dc coupling. For more information regarding the
recommended values of the external components, see Section 5.3, Electrical Specifications Over
Recommended Operating Conditions.
AVDAC
I DAC
+
TVBUF
–
VREF
TVDET
vssa_hdmi_vdac
vdda_hdmi_vdac
cvideo_tvout
R_OUT
cvideo_vfb
R_LOAD
cvideo_rset
R_SET
Device
= External pin
SWPS040-123
Figure 5-1. Recommended Loading Conditions for TVOUT Buffer Mode
5.2 TVOUT Bypass Mode (DAC Only)
In this case, TVOUT bypass input is high and the TVOUT buffer is bypassed (for more information, see
Section 5.4, TVOUT Bypass Mode Specifications (DAC-Only) Electrical Specifications Over
Recommended Operating Conditions). Figure 5-2 shows the connection. For more information regarding
the recommended values of the external components, see Section 5.3, Electrical Specifications Over
Recommended Operating Conditions.
Copyright © 2010–2012, Texas Instruments Incorporated
Submit Documentation Feedback
Product Folder Link(s): OMAP4430
Video DAC Specifications 191