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Display Subsystem Integration
•
PAL-B, D, G, H, I
•
PAL-M
7.2.3.2
Digital-to-Analog Converters
The video DAC stage includes the following main features:
•
1.1-V digital power supply, 1.8-V analog power supply
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10-bit resolution
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DNL within 1 LSB and INL within 1 LSB (in bypass mode)
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Sample rate of up to 60 mega samples per second (MSPS)
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Support composite/S-video DC or AC coupled output
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Support TVOUT buffer bypass mode (DAC-only mode)
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Full-scale voltage output: minimum 1.2 Vpp with a 75-
Ω
load
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Internal TV detect feature
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Signal-to-noise ratio (SNR) is 54 dB (taking into account the ac coupling)
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Suitable for low-power consumer video applications
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Power-down mode with less than 12-µA standby current
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Differential gain error and differential phase error: within 3 percent and 1 degree, respectively
NOTE:
To enhance the TV color display, it is highly recommended to set the
[4] DAC_DEMEN bit.
For more information about the video DAC stage architecture and configuration, see
, Video DAC Stage – Architecture and Control.
7.3
Display Subsystem Integration
This section describes the integration of the display subsystem and details clocks, resets, hardware
requests, and power modes.
shows the integration of the display subsystem in the device.
1617
SWPU177N – December 2009 – Revised November 2010
Display Subsystem
Copyright © 2009–2010, Texas Instruments Incorporated