参数资料
型号: SM8521
厂商: Sharp Corporation
元件分类: DC/DC变换器
英文描述: 1 watt dc-dc converters
中文描述: 1瓦的DC - DC转换器
文件页数: 38/56页
文件大小: 267K
代理商: SM8521
SM8521
- 38 -
LCV (Display vertical timing register)
Bit 7
0
Bit 7 : V-blank bit (read only)
BIT
0
Non-vertical blank period
1
Vertical blank period
Bit 6 : Sets ‘0’.
Bits 5 to 4 : V-line size bits
BIT
00
100
01
10
200
Bits 4 to 0 : V-blank width bits
NOTE :
V-blank width bit must not be filled with 0000B. Otherwise,
LCDC interrupt can not be effective.
Horizontal display cycle = (shift clock x LCDC/DMA
clock ) x (H-timing + 1)
Shift clock = 40 (at H-dot size = 160),
50 (at H-dot size = 200)
Frame cycle = Horizontal display cycle x (V-line
size + V-blank width)
DMC (DMA control register)
Bit 7
0
Bit 7 : DMA start bit
BIT
0
DMA stops
1
DMA starts transfering data
Bits 6 to 5 : Set ‘0’.
Bit 4 : Increment y/decrement y bit
(Increment/decrement y-coordinate of source)
BIT
0
Increment y
1
Decrement y
Bit 3 : Increment x/decrement x bit
(Increment/decrement x-coordinate of source)
BIT
0
Increment x
1
Decrement x
Bits 2 to 1 : Transfer mode bits
BIT
00
VRAM
VRAM
01
ROM
VRAM
10
11
VRAM
Extend RAM
Bit 0 : Compound/overwrite bit
BIT
0
Compound mode
1
Overwrite mode
SOURCE
DESTINATION
VBLNK
-
VL1
VL0
VBWD3 VBWD2 VBWD1 VBWD0
STATUS
STATUS
STATUS
STATUS
Extend RAM
VRAM
STATUS
VERTICAL LINE SIZE
160
DMST
-
-
INDCY INDCX TRN1 TRN0
COOVr
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