LC7471 查看數據表（PDF） - SANYO -> Panasonic
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LC7471 Datasheet PDF : 12 Pages
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LC7471
Video Signal Control Register (0BEH)
The function of each bit in the video signal control register is shown in the following table. Note that a LOW-level
pulse on RST resets all bits to 0.
Data bit
Name
Function
0
PH0
Selects the phase, and hence the background color, in the color burst as shown in table 7.
1
PH1
2
–
No function
3
–
No function
4
–
No function
5
SYS RST
Resets all registers and turns the display OFF when 1. Note that the device remains reset until CS goes HIGH
again.
6
–
No function
7
DSP ON Selects character display OFF when 0, and ON, when 1.
8
OSC STP
Turns the crystal oscillator and LC oscillator ON when 0, and OFF, when 1. Note that the oscillators can be turned
OFF only when external synchronization is selected and the character display is OFF.
9
–
No function
A
–
No function
B
INT/NON Selects 262.5 lines/field, interlaced display when 0, and 263 ines/field, non-interlaced display, when 1.
C
–
No function
Table 7. Phase selection
PH1
PH0
0
0
0
1
1
0
1
1
Phase
π/2
π
3π/2
In phase
General Control Register (0BFH)
The function of each bit in the general control register is shown in the following table. Note that a LOW-level pulse on
RST resets all bits to 0.
Data bit
Name
Function
0
BCOL
Selects background color ON when 0 (valid for internal synchronization only), and 0FF, when 1.
1
–
No function
2
EXT
Selects external horizontal and vertical synchronization when 0, and internal, when 1.
3
FL0
Selects the display flashing duty cycle as shown in table 8.
4
FL1
5
FL2
Selects a flashing period of approximately 1 s when 0, and of approximately 0.5 s, when 1.
6
–
No function
7
BLK0
Selects the blanking area of the display as shown in table 9.
8
BLK1
9
–
No function
A
–
No function
B
TST MOD
Selects normal operation when 0, and test mode, when 1. Note that test mode should not be selected during normal
operation.
C
–
No function
Table 8. Flashing duty cycle selection
FL1
FL0
Duty cycle
0
0
0
1
1
0
1
1
Flashing OFF
25%
50%
75%
Table 9. Blanking area selection
BLK1
BLK0
0
0
0
1
1
0
1
1
Blanking area
Blanking OFF
Character size
Frame size
Total area
No.4088–7/12
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