文档介绍：Engineer-to-Engineer Note EE-256
Technical notes on using Analog Devices DSPs, processors and development tools
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Using the ADSP-BF561 Blackfin® Processor as a TFT-LCD Controller
Eliminates Need for Timing ASIC
Contributed by C. Lam Rev 1 – December 9, 2004
Introduction electronics normally implemented in the LCD
module has been removed. Removing these
The ADSP-BF561 Blackfin® processor has two ponents from the module saves
Parallel Peripheral Interfaces (PPIs) that enable both cost and space. Because the drive
video to be simultaneously input and output from electronics are not integrated in the LCD module,
the device. The PPI can interface to video an additional timing ASIC is usually needed to
decoders that convert standard analog television generate the specific timing signals required for
signals, compatible with NTSC and PAL the row and column drivers.
standards, into 4:2:ponent video data. The
PPI can also directly connect to several TFT However, because the ADSP-BF561
LCD panels that accept RGB video data. This L processor provides many general-
EE-Note describes the hardware and software purpose PWM timers, it can be
requirements necessary to develop a video configured to provide the pr