GMS30C7201 Datasheet, PDF (130/352 Pages) Hynix Semiconductor – 60MHz operation frequency Low power consumption

LCD & VGA Controllers
11.1 Overview
11.1.1 LCD features
Note
11.1.2 VGA features
Note
The VGA and LCD controllers provide the video output capabilities of the GMS30C7201. The
VGA and LCD controllers can be used simultaneously, and can display either the same image,
or entirely different images. If the images are the same for the two displays, and the frame rates
required are also the same, then it is possible to use the same frame buffer for both controllers.
If either the images are different, or different frame rates are required, then it is necessary to use
two frame buffers, or one frame buffer, but with two DMA channels. In either case, the DMA
bandwidth required for the two video sub-systems is the sum of the bandwidth for each display,
whereas if the two images and the frame rates are the same, then only one DMA channel is used,
and the DMA data is shared between the two controllers.
• Single panel color and monochrome STN displays
• TFT color displays
• Resolution programmable up to 640x480
• Single panel mono STN displays with either 4- or 8-bit interfaces
• 15 grey-level mono support, 3375 color STN support
• 4bpp mono, 4 or 8bpp palettized color displays
• 12bpp color ‘true-color’ non-palettized color displays
• Programmable timing for different display panels
• 3 x 256 entry, 4-bit palette RAM
• Patented grayscale algorithm
• Little-endian operation
The controller does not support dual panel STN displays.
There is no hardware cursor support, since WinCE does not use a cursor.
• Resolution programmable up to 800x600 resolution (640x480 maximum for
simultaneous display mode)
• Programmable border color
• Programmable VGA timing
• On-chip video DACs for direct drive of a monitor
• Option to share video data with LCD interface
• 4bpp, 8bpp and 16bpp modes
• 5:5:5 and 5:6:5 16bpp ‘true-color’ modes
• 3 x 256 entry 8-bit palette RAM
• Patented technique for selecting 2¹⁶ colors from 2²⁴ colors in 16bpp mode
• Little-endian operation
The controller does not support interlaced displays. It supports non-interlaced monitor output
only, and therefore cannot be used as a television display.
There is no hardware cursor support, since WinCE does not use a cursor.
11-2
GMS30C7201 Data Sheet