參數(shù)資料
型號(hào)： 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(yè)數(shù)： 37/51頁(yè)
文件大?。?/td> 489K
代理商： GM2121
gm2121 Preliminary Data Sheet
C2121-DAT-01F
37
December 2002
http://www.genesis-microchip.com
OCM Full-Custom and Standalone Configurations
User settings in NVRAM
:
Brightness/contrast settings, etc
On mode-by-mode basis
B - Full-Custom Configuration
(Program and Data stored in external ROM)
NVRAM
Analog
RGB
Input
PROM
gm2121
Output to
LCD Panel
Factory
Port
OCM
:
Contains firmware code and data
for all firmware functions
A - Standalone Configuration
(No external ROM)
Configuration settings in NVRAM
:
OSD Colors, Logo and other configuration
Panel Parameters
Additional input modes
Code patches
On-chip ROM
:
Auto mode detection
Auto-configuration
Standard high-quality OSD menus
Factory test / calibration functions
gm2121
Output to
LCD Panel
Factory
Port
OCM
NVRAM
ROM
Analog
RGB
Input
Figure 25.
OCM Full-Custom and Standalone Configurations
4.14.1 Standalone Configuration
Standalone configuration offers the most simple and inexpensive system solution for generic LCD
monitors. In this configuration the OCM executes firmware stored internally in gm2121. The baud rate
for serial communication (in standalone configuration) is determined by two bootstrap resistors on
ROMADDR11 (TCLK_SEL1, pin 145) and ROMADDR10 (TCLK_SEL0, pin 146). The on-chip
firmware provides all the standard functions required in a high-quality generic LCD monitor. This
includes mode-detection, auto-configuration and a high-quality standard OSD menu system. No external
ROM is required (which reduces BOM cost) and no firmware development effort is required (which
reduces time-to-market).
In Standalone configuration many customization parameters are stored in NVRAM. These include the
LCD panel timing parameters, the color scheme and logos used in the OSD menus, the functions provided
by the OSD menus, and arbitrary firmware modifications. These customization parameters are described
in the Standalone 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 below.
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