參數(shù)資料
型號(hào)： PCA8514
廠商： NXP Semiconductors N.V.
英文描述： Stand-alone OSD
中文描述： 單機(jī)OSD
文件頁(yè)數(shù)： 56/64頁(yè)
文件大?。?/td> 322K
代理商： PCA8514
1995 Nov 27
56
Philips Semiconductors
Product specification
Stand-alone OSD
PCA8514
14 DEFAULT VALUES AFTER POWER-ON-RESET
The default values of registers after a Power-on-reset are specified in Table 48. All other settings must be initialized by
the user after a Power-on-reset.
Table 48
Default values
REGISTER
BIT
STATE AFTER
RESET
DESCRIPTION
User directly controllable registers
Control Register 1
M1
M0
Bp
0
0
1
Scanning mode selection bits. Conventional
NTSC 525LPF/60 Hz and/or PAL 625LPF/50 Hz selected.
Polarity control bit; the output polarities of FB, ACM, R, G, B and
I are active HIGH.
OSD enable/disable control bit; the OSD is disabled.
HSYNC input polarity control bit; the input polarity is active LOW.
VSYNC input polarity control bit; the input polarity is active LOW.
Display mode selection bits; the North-West shadowing mode is
selected.
EN
Hp
Vp
S1
S0
BF1
BF0
BR1
BR0
A/P
0
0
0
0
1
0
0
0
0
0
Control Register 2
Control Register 3
Blinking frequency control bits. The blinking frequency is set to
f
VSYNC
/16 Hz.
Active ratio of blinking frequency control bits. The active ratio is
set to 3 : 1.
Control Register 4
Port control bit. Pin 2 (P04/ACM/VOB2) is selected as an output
port pin.
Background colour selection bits in Frame shadowing mode; the
default colour is Blue.
Control Register 5
R
G
B
I
0
0
1
0
0
0
BS1
BS0
Command Bank selection bits. Command Bank 00 is selected.
User indirectly controllable registers
ACM
Background colour
ACM
B
R
G
I
T4
T3
T0
0
1
0
0
0
0
0
0
The ACM output is LOW unless changed by the Space Code.
The Background colour selected is Blue unless changed by the
Space Code.
Character size
The default character size is 1V/1H. A different value can be
selected by using the Carriage Return Code.
End of display
Will continue to display next character (if the OSD clock is
enabled).
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