參數(shù)資料
型號(hào)： GM2125
廠商： Electronic Theatre Controls, Inc.
英文描述： ANALOG INTER FACE XGA/SXGA ONPANEL LCD PANEL CONTROLLER
中文描述： 模擬國(guó)際米蘭的XGA / SXGA ONPANEL液晶顯示器控制器
文件頁(yè)數(shù)： 43/54頁(yè)
文件大小： 1339K
代理商： GM2125
***
Genesis Microchip Confidential ***
gm2115/25 Preliminary Data Sheet
June 2002
41
C2115-DAT-01B
User’s Guide (B0108-SUG-01). Based on the customization parameters, G-Wizard (a GUI-
based development tool used to program Genesis devices) produces the hex image file for
NVRAM. G-Probe is then used to download the NVRAM image file into the NVRAM
device. This is illustrated in Figure 26.
G-Wizard
G-Probe
NVRAM
Image File
(.nvram_image. hex)
Specify Configurable Parameters
(See Standalone Users Guide)
OCM
NVRAM
gm2115/25
LCD
Controller
Board
Figure 26.
Programming OCM in Standalone Configuration
4.13.2 Full-Custom Configuration
In full-custom configuration the OCM executes a firmware program running from external
ROM. This is illustrated in Figure 25B. 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
speed of the accesses on the parallel port is determined by the gm2115/25 internal
OCM_CLK. This in turn determines the speed of the external ROM device. For example, if a
14.3 MHz crystal is being used to produce TCLK, and the OCM_CLK is derived from
TCLK, then a 45ns ROM can be used.
To program gm2115/25 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
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