參數(shù)資料
型號(hào)： PCB8517P
廠商： NXP SEMICONDUCTORS
元件分類： 畫(huà)面疊加
英文描述： Stand-alone OSD for monitor applications
中文描述： ON-SCREEN DISPLAY IC, PDIP16
封裝： 0.300 INCH, PLASTIC, SOT-38-4, DIP-16
文件頁(yè)數(shù)： 10/24頁(yè)
文件大?。?/td> 740K
代理商： PCB8517P
1997 Mar 03
10
Philips Semiconductors
Objective specification
Stand-alone OSD for monitor applications
PCB8517
Table 16
Explanation of Table 15
Table 17
Column 10 of row 10
Table 18
Explanation of Table 17
A horizontal display line consists of 384 dots, which include 288 dots (e.g. 12 dots
×
24 characters) for display character,
and 96 dots for the blank region.
Table 19
Column 11 of row 10
Table 20
Explanation of Table 19
BIT
NAME
DESCRIPTION
5 to 0
These bits specify the vertical starting position of OSD. The counting starts from the
falling edge of the VFLB signal (e.g. enter vertical flyback period) and each increment
represents four scan line movement to the bottom. 64 positions are provided.
The default value is 4 after power-up. The time from the falling edge of the VFLB signal
to starting display is:
t
v
= (vertical start position)
×
4
×
t
h-sync
+ t
h-sync
.
Where t
h-sync
= one horizontal line display time.
DATA BYTE
BIT 7
BIT 6
BIT 5
BIT 4
BIT 3
BIT 2
BIT 1
BIT 0
reserved
MSB
horizontal start position
LSB
BIT
NAME
DESCRIPTION
4 to 0
These bits specify the horizontal starting position of OSD. The counting starts from the
falling edge of the HFLB signal (e.g. enter horizontal flyback period) and each increment
represents six dots movement to the right. 32 positions are provided. The default value
is 15 after power-up. The time from the falling edge of the HFLB signal to starting
display is:
t
h
= (horizontal start position)
×
6
×
t
dot
+ 61
×
t
dot
.
Where t
dot
= one pixel display time (e.g. one horizontal line display time/384).
DATA BYTE
BIT 7
BIT 6
BIT 5
BIT 4
BIT 3
BIT 2
BIT 1
BIT 0
reserved
CH5
CH4
CH3
CH2
CH1
CH0
BIT
NAME
DESCRIPTION
5 to 0
CH5 to CH0
These bits specify the height of displayed characters. Table 21 shows the lines to be
repeated.
The height of character can be specified from 16 to 63 scan lines. For example, when
CH5 to CH0 = 00 0010, the height of character will be 18 scan lines, the 4th and 12th
line will be double scanned but others will be scanned once.
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