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參數(shù)資料
| 型號(hào)： | AD8380JS |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | 顯示驅(qū)動(dòng)器 |
| 英文描述： | Fast, High-Voltage Drive, 6-Channel Output DecDriver Decimating LCD Panel Driver |
| 中文描述： | LIQUID CRYSTAL DISPLAY DRIVER, PQFP44 |
| 封裝： | 10 X 10 MM, 2 MM HEIGHT, MQFP-44 |
| 文件頁數(shù)： | 10/16頁 |
| 文件大?。?/td> | 219K |
| 代理商： | AD8380JS |
REV. B
AD8380
–10–
SVGA System Operation
An SVGA system is characterized by the requirement of six
channels of panel drive for each displayed color. Such a system
would use a single AD8380 per color.
With E/
O
and all address bits A[0:2] set high, channel loading
commences on the first rising edge of CLK following a valid
assertion of the Start Sequence (STSQ) input. The second stage
latches, and therefore the video outputs, are updated on the
first falling edge of the clock following a valid Transfer (XFR)
signal. (See Figure 5 for signal timing details.)
t
1
t
2
5
0
5
0
t
7
2.0V
0.8V
t
7
2.0V
0.8V
t
3
t
4
t
5
t
6
DB[0:9]
CLK
STSQ/CS
XFR
Figure 5. Sequenced SVGA Timing (A[0:2] = HIGH, E/
O
=
HIGH, See Table I)
Table I. Sequenced SVGA Data Byte to Channel Assignment
Channel Number
E/
O
= HIGH
R/
L
= LOW
Data Byte Number
0
1
2
3
4
5
VID0
VID1
VID2
VID3
VID4
VID5
Load Sequence Switching (Right/Left Control)
To facilitate image mirroring, the order in which channels are
loaded can be easily switched. When the voltage on the right/left
control input (R/
L
) is low, the internal sequencer will load data
starting with Channel 0 and counting up to Channel 5. When
this voltage is high, channel loading will be in reverse order, from
Channel 5 down to Channel 0.
XGA System Operation
In an XGA system, twelve column drivers (two AD8380s) are
required for each color (refer to Figure 6). An “even/odd”
system, in which one AD8380 drives even numbered columns
and another drives odd numbered columns, can be easily imple-
mented as detailed in Figures 7 and 8. A clock at one-half the
pixel rate is applied to the CLK input. Even bytes are loaded on
the rising edge of the clock, while odd bytes are loaded on the
falling edge. Identifying whether a chip is to load on rising or falling
edges is done by setting the proper level on the E/
O
input.
STSQ_A
STSQ_B
XFR
E/
O
_A
R/
L
INV
E/
O
_B
CLKIN
STSQ/CS
XFR
E/O
R/L
INV
3
DVCC
6
A[0:2]
VIDEO
OUT
CLK
AD8380
DEVICE
“
A
”
DB[0:9]
STSQ/CS
XFR
E/
O
R/
L
INV
CLK
6
VIDEO
OUT
AD8380
DEVICE
“
B
”
DB[0:9]
3
DVCC
VIDEO
DB[0:9]
DCLK/2
10
1 COLOR OF
‘
EVEN/ODD
’
XGA
A[0:2]
PANEL
CONTROLLER
IMAGE
PROCESSOR
Figure 6. Even/Odd: Outputs of Devices A and B are
Configured as Even and Odd Data Channels and Loading
Sequence Is Defined by Status of E/
O
and R/
L
Inputs
t
1
t
2
t
3
t
4
t
5
t
6
DB[0:9]
CLK
(EVEN
CHIP)
STSQ
/
CS
(EVEN
CHIP)
XFR
A0:A2 = HIGH
0
10
0
11
9
10
11
t
1
t
2
t
3
t
4
CLK
(ODD
CHIP)
STSQ
/
CS
(ODD
CHIP)
Figure 7. Sequenced Even/Odd XGA Timing, A[0:2] =
HIGH (See Table II)
Table II. Sequenced Even/Odd XGA Data Byte to
Channel Assignment
Data Byte Number
R/
L
= LOW
0
2
4
6
8
10
1
3
5
7
9
11
Channel Number
E/
O
= HIGH
R/
L
= HIGH
10
8
6
4
2
0
11
9
7
5
3
1
VID0
VID1
VID2
VID3
VID4
VID5
VID0
VID1
VID2
VID3
VID4
VID5
E/
O
= LOW
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| AD8381 | Fast, High Voltage Drive, 6-Channel Output DecDriverTM Decimating LCD Panel Driver |
| AD8381AST | Fast, High Voltage Drive, 6-Channel Output DecDriverTM Decimating LCD Panel Driver |
| AD8381AST-REEL | Fast, High Voltage Drive, 6-Channel Output DecDriverTM Decimating LCD Panel Driver |
| AD8390 | Low Power, High Output Current Differential Amplifier |
| AD8390ACP-EVAL | Low Power, High Output Current Differential Amplifier |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AD8380JSZ | 制造商:Analog Devices 功能描述:LCD DRVR 3.3V/5V/12V/15V/18V 44-Pin MQFP |
| AD8381 | 制造商:AD 制造商全稱:Analog Devices 功能描述:Fast, High Voltage Drive, 6-Channel Output DecDriverTM Decimating LCD Panel Driver |
| AD8381AST | 制造商:AD 制造商全稱:Analog Devices 功能描述:Fast, High Voltage Drive, 6-Channel Output DecDriverTM Decimating LCD Panel Driver |
| AD8381AST-REEL | 制造商:AD 制造商全稱:Analog Devices 功能描述:Fast, High Voltage Drive, 6-Channel Output DecDriverTM Decimating LCD Panel Driver |
| AD8381-EB | 制造商:Analog Devices 功能描述:LCD DRVR 9 TO 18V - Bulk |
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