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| 型號： | ML87V3116 |
| 廠商： | OKI ELECTRIC INDUSTRY CO LTD |
| 元件分類： | 顯示控制器 |
| 英文描述： | DOT MAT LCD DSPL CTLR, PQFP176 |
| 封裝： | 24 X 24 MM, 0.50 MM PITCH, PLASTIC, LQFP-176 |
| 文件頁數(shù)： | 18/46頁 |
| 文件大?。?/td> | 273K |
| 代理商： | ML87V3116 |
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PEDL87V3116-02
OKI Semiconductor
ML87V3116
25/47
2.5 Data Buffer and Controller
2.5.1 General Description
A data buffer is a memory buffer having two-dimensional addresses. The memory size is 1 Mbyte and the
depth is 1 pixel (16 bits).
Write/read access to the Data Buffer is always performed via block access.
External SDRAM is called an extension Data Buffer, which is assumed as an address extension area of the
internal Data Buffer. However, there are restrictions on access to extension Data Buffers.
If the internal data buffer is used two-dimensionally, the X size (horizontal direction) and Y size (vertical
direction) of the memory size can be changed.
Data buffer size variations (X size × Y size)
4096
× 128 pixels
2048
× 256 pixels
1024
× 512 pixels
512
× 1024 pixels
The following types of sources are available for access to data buffers:
a) Video input write
b) Display output read
c) JPEG block access read/write
d) JPEG compressed data file read/write
e) Copy source read
f) Copy destination write
g) Host access read/write
h) Refresh
For access to the internal Data Buffer, up to four access sources can simultaneously (time sharing) be used
among the access sources listed above.
However, JPEG accesses of c) and d) are always carried out
simultaneously in pair. Also, during the operations of the copy functions e) and f), the host access g) cannot be
carried out simultaneously.
For access to an extension data buffer, always only one access source can be used.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| ML87V3116 | DOT MAT LCD DSPL CTLR, PQFP176 |
| ML9041-XXACVWA | 17 X 100 DOTS DOT MAT LCD DRVR AND DSPL CTLR, UUC189 |
| ML9041-01BCVWA | 17 X 100 DOTS DOT MAT LCD DRVR AND DSPL CTLR, UUC175 |
| ML9041A-XXACVWA | 17 X 100 DOTS DOT MAT LCD DRVR AND DSPL CTLR, UUC189 |
| ML9042-XXCVWA | 17 X 100 DOTS DOT MAT LCD DRVR AND DSPL CTLR, UUC233 |
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