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參數(shù)資料
| 型號(hào)： | 935176920112 |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 畫面疊加 |
| 英文描述： | ON-SCREEN DISPLAY IC, PDSO24 |
| 封裝： | PLASTIC, SOT-137-1, SO-24 |
| 文件頁(yè)數(shù)： | 51/66頁(yè) |
| 文件大?。?/td> | 445K |
| 代理商： | 935176920112 |
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1995 Jan 19
55
Philips Semiconductors
Preliminary specication
Stand-alone OSD
PCA8515
14 DEFAULT VALUES AFTER POWER-ON-RESET
The default values of registers after a Power-on-reset are specified in Table 45. All other settings must be initialized by
the user after a Power-on-reset.
Table 45 Default values
REGISTER
BIT
STATE AFTER
RESET
DESCRIPTION
User directly controllable registers
Control Register 1
M1
0
Scanning mode selection bits. Conventional
NTSC 525LPF/60 Hz and/or PAL 625LPF/50 Hz selected.
M0
0
Bp
1
Polarity control bit; the output polarities of FB, ACM, R, G, B and
I are active HIGH.
EN
0
OSD enable/disable control bit; the OSD is disabled.
Control Register 2
Hp
0
HSYNC input polarity control bit; the input polarity is active LOW.
Vp
0
VSYNC input polarity control bit; the input polarity is active LOW.
S1
0
Display mode selection bits; the North West shadowing mode is
selected.
S0
1
Control Register 3
BF1
0
Blinking frequency control bits. The blinking frequency is set to
fVSYNC/16 Hz.
BF0
0
BR1
0
Active ratio of blinking frequency control bits. The active ratio is
set to 3 : 1.
BR0
0
Control Register 4
A/P
0
Port control bit. Pin 2 (P04/ACM/VOB2) is selected as an output
port pin.
Control Register 5
R
0
Background colour selection bits in Frame shadowing mode; the
default colour is BLUE.
G0
B1
I0
BS1
0
Command Bank selection bits. Command Bank 00 is selected.
BS0
0
User indirectly controllable registers
ACM
0
The ACM output is LOW unless changed by the Space Code.
Background colour
B
1
The Background colour selected is BLUE unless changed by the
Space Code.
R0
G0
I0
Character size
T4
0
The default character size is 1V/1H. A different value can be
selected by using the Carriage Return Code.
T3
0
End of display
T0
0
Will continue to display next character (if the OSD clock is
enabled).
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