- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄367810 > PCB8517 (NXP Semiconductors N.V.) Stand-alone OSD for monitor applications PDF資料下載
參數(shù)資料
| 型號： | PCB8517 |
| 廠商： | NXP Semiconductors N.V. |
| 英文描述： | Stand-alone OSD for monitor applications |
| 中文描述： | 獨(dú)立的監(jiān)視器應(yīng)用OSD |
| 文件頁數(shù)： | 12/24頁 |
| 文件大小： | 740K |
| 代理商： | PCB8517 |
1997 Mar 03
12
Philips Semiconductors
Objective specification
Stand-alone OSD for monitor applications
PCB8517
Character ROM
The character ROM contains 128 character fonts. Each
font consists of a 12
×
16 dot matrix.
Bordering and shadowing of characters
The characters displayed on the screen can be specified
with or without shadowing or with border shadowing by
setting the BSEN and SHSE bits of frame control register
“Column 11 of row 10”. If shadowing is specified, there is
black shadow on the right and bottom sides of character,
and if border shadowing is specified, the black shadowing
will surround both internal and external sides of characters
(see Fig.5). The characters shadow will not appear if it is
outside the display area of character (i.e. 12
×
16 dots).
Combination of two or more character fonts to
formulate a new symbol
User can combine two (or more) character fonts to
formulate a new higher resolution symbol in a horizontal
direction, but the combination of two fonts in a vertical
direction could cause the shadowing or bordering shadow
of upper font to be missed if shadowing or bordering is
applied.
PLL clock generator
By tracing the signal on the HFLB pin, the on-chip PLL
circuit generates the clock (VCLK) which is used for both
system clock and dot clock of the OSD. The frequency of
VCLK signal is determined by following equation:
f
VCLK
= f
HFLB
×
384 (i.e. the frequency range of VCLK
signal is from 3.84 to 38.4 MHz).
When there is no horizontal sync pulse present on the
HFLB pin, the PLL circuit will generate a 2.5 MHz
(approximate) clock for the system clock, and the RED,
GREEN, BLUE and FB pins will be high impedance.
Fig.5 Character shadowing and bordering.
handbook, full pagewidth
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
no shadow
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
shadowing
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
MGD759
bordering shadow
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| PCB8517P | Stand-alone OSD for monitor applications |
| PCBFA80C39 | SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER |
| PCBFA80C49WP | CAPACITOR, CLASS Y2 47NFCAPACITOR, CLASS Y2 47NF; Capacitance:47nF; Voltage rating, AC:250V; Voltage rating, DC:2500V; Capacitor dielectric type:Polypropylene; Series:B81122; Tolerance, +:20%; Tolerance, -:20%; Temp, op. |
| PCBFA80C49P | SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER |
| PCB | Mounting 2-10 Array 2 mA/(Voltage Option) |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| PCB8517P | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Stand-alone OSD for monitor applications |
| PCB-858-R | 制造商:JAMECO VALUEPRO 功能描述:PROTOBOARD, 2.5"x4.25", 640 HOLES, PLATED THRU-HOLE |
| PCB85G | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:GEHAEUSE WASSERD DECKEL GRAU 110X80X85 |
| PCB85T | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:GEHAEUSE WASSERD DECK TRANSP 110X80X85 |
| PCB87C850 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:ENTWICKLUNGSWERKZEUG |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。