參數(shù)資料
型號(hào): HD66841
廠商: Hitachi,Ltd.
英文描述: LVIC-II (LCD Video Interface Controller)(LCD視頻控制器)
中文描述: LVIC - 2(液晶視頻接口控制器)(液晶顯示視頻控制器)
文件頁數(shù): 14/62頁
文件大小: 185K
代理商: HD66841
HD66841
14
System Configuration
Figure 2 is a block diagram of a system in which the HD66841 is used outside a personal computer.
The HD66841 converts the RGB serial data sent from the personal computer into parallel data and
temporarily writes it to the buffer memorie. It then reads out the data in order and outputs it to LCD drivers
to drive the LCD. In this case, the CRT display dot clock (DOTCLK), which is a latch clock for serial data,
is generated by the PLL circuit from the horizontal synchronization signal (HSYNC). The DOTCLK signal
frequency is specified by the PLL frequency-division ratio register (R10, R11).
The system can be configured without a VCO and LPF if the DOTCLK signal is supplied externally, and it
can be configured without an MPU if the LVIC-II is controlled by the pin programming method.
HD66841
VCO
LPF
MPU
CD
CU
Dot clock
RGB serial data
HSYNC
VSYNC
Personal
computer
Buffer
memory
Simultaneous
display possible
LCD
CRT
VCO:
LPF
Voltage-controlled oscillator
Low-pass filter
Figure 2 System Block Diagram
(with MPU Programming Method and DOTCLK Generated Internally)
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