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參數(shù)資料
| 型號： | GM2121 |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | SXGA LCD Monitor Controller with Integrated Analog Interface and Dual LVDS Transmitter |
| 中文描述： | SXGA液晶顯示器控制器集成模擬接口和雙路LVDS發(fā)送器 |
| 文件頁數(shù)： | 38/51頁 |
| 文件大?。?/td> | 489K |
| 代理商： | GM2121 |
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gm2121 Preliminary Data Sheet
C2121-DAT-01F
38
December 2002
http://www.genesis-microchip.com
LCD
Controller
Board
gm2121
NVRAM
OCM
Specify Configurable Parameters
(See Standalone Users Guide)
NVRAM
Image File
(.nvram_image. hex)
G-Probe
G-Wizard
Figure 26.
Programming OCM in Standalone Configuration
4.14.2 Full-Custom Configuration
In full-custom configuration the OCM executes a firmware program running from external ROM. A
parallel port with separate address and data busses is available for this purpose. This port connects
directly to standard, commercially available ROM or programmable Flash ROM devices. Normally 64KB
or 128KB of ROM is required.
Both instructions and data are fetched from external ROM on a cycle-by-cycle basis. The external ROM
access speed on the parallel port is determined by the gm2121 internal OCM_CLK, which is derived from
the TCLK. As a result, the external ROM device’s access speed requirements are directly related to the
TCLK frequency. For the detailed timing requirements see section 5.3 “External ROM Interface Timing
Requirements”).
To program gm2121 in full-custom configuration the content of the external ROM is generated using
Genesis software development tools G-Wizard and OSD-Workbench. This is illustrated in Figure 27. G-
Wizard is a GUI-based tool for capturing system information such as panel timing, support modes, system
configuration, etc. OSD-Workbench is a GUI based tool for defining OSD menus and functionality.
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