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参数资料
| 型号： | P83C566BDR |
| 厂商： | NXP SEMICONDUCTORS |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | Microcontrollers for PAL/SECAM TV with OSD and VST |
| 中文描述： | 8-BIT, MROM, 12 MHz, MICROCONTROLLER, PDIP42 |
| 封装： | 0.600 INCH, PLASTIC, SDIP-42 |
| 文件页数： | 50/92页 |
| 文件大小： | 382K |
| 代理商： | P83C566BDR |
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1999 Mar 10
50
Philips Semiconductors
Product specification
Microcontrollers for PAL/SECAM TV
with OSD and VST
P8xCx66 family
17.3.2
OSD C
ONTROL
R
EGISTER
1 (OSCON)
Table 52
OSD Control Register 1 (SFR address C1H)
Table 53
Description of OSCON bits
7
6
5
4
3
2
1
0
Split
Mesh
Mode
Hp
Vp
Bp
BF
OSDE
BIT
SYMBOL
DESCRIPTION
7
Split
Split space control.
If Split = 0, then split space is disabled. If Spilt = 1, then split
space is enabled on frame-by-frame basis. Split space only effects Space 1 (SP1)
because Space 2 (SP2) is displayed transparent.
OSD meshing mode.
If Mesh = 0, then the OSD meshing mode is disabled.
If Mesh = 1, the OSD meshing mode is enabled.
Background mode selection.
If Mode = 0, then TV mode is selected (FB only active
when there are characters displayed). If Mode = 1, then Frame mode is selected (FB is
active in every single active scan line; FB is inactive during horizontal and vertical
retrace period).
HSYNC active polarity selection.
If Hp = 0, then HSYNC is an active LOW input.
If Hp = 1, then HSYNC is an active HIGH input. See Fig.30.
VSYNC active polarity selection.
If Vp = 0, then VSYNC is an active LOW input.
If Vp = 1, then VSYNC is an active HIGH input. See Fig.30.
Active R, G, B and FB output polarity selection.
If Bp = 0, then these signals are all
active LOW. If Bp = 1, then these signals are all active HIGH. See Fig.31.
Character blinking frequency control.
If BF = 0, the blinking frequency is
1
32
f
VSYNC
. If
BF = 1, the blinking frequency is
1
64
f
VSYNC
. The duty cycle of the blinking frequency is
fixed at 1 : 1.
OSD circuit general enable/disable.
If OSDE = 0, the OSD is disabled and the R, G, B
and FB signals stay in the inactive status (inverse of the Bp bit in SFR OSCON). If
OSDE = 1, the OSD is enabled.
6
Mesh
5
Mode
4
Hp
3
Vp
2
Bp
1
BF
0
OSDE
Fig.30 HSYNC and VSYNC active level selection.
handbook, full pagewidth
MGL284
character display interval
fly-back period
fly-back period
HSYNC/VSYNC pin
Hp/Vp = 1 (active HIGH)
HSYNC/VSYNC pin
Hp/Vp = 0 (active LOW)
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