 |
Electronic Components Datasheet Search |
|
|
Electronic Components Datasheet Search |
|
PCA8515P Datasheet(PDF) 11 Page - NXP Semiconductors |
|
||||||||||||||||||||||||||||||
PCA8515P Datasheet(HTML) 11 Page - NXP Semiconductors |
|
|
11 / 64 page  1995 Jan 19 11 Philips Semiconductors Preliminary specification Stand-alone OSD PCA8515 8 DISPLAY RAM ORGANIZATION The display RAM is organized as 256 × 13 bits. The general format of each RAM location is as follows. Bits <12-5> hold character data and allow a choice from 253 customer designed character fonts to be selected or one of three reserved codes. Bits <4-0> contain the attributes of the character font, for example colour, character size etc. 8.1 Description of display RAM codes There are four data formats for display RAM code: 1. Character Font Code 2. Test Code 3. Carriage Return Code 4. Space Code. The above data formats allow great flexibility in the creation of On Screen Displays; see Fig.8. 8.1.1 CHARACTER FONT CODE If bits <12-5> are in the range (00H to FCH), then this is a Character Font Code. 1 of 253 customer designed character fonts can be selected. Bits <4-1> determine the colour of the character, a choice of 16 colours being available. Bit <0> determines whether the character blinks or not. The format of the Character Font Code is shown in Table 2. 8.1.2 TEST CODE If bits <12-5> hold FDH, then this is a special code reserved for testing purposes only. 8.1.3 CARRIAGE RETURN CODE If bits <12-5> hold FEH, then this is the Carriage Return Code. A transparent pattern will be displayed on the screen and the next character will be displayed at the beginning of the next line. Bits <4-3> select the size of the of the characters to be displayed on the next line. Bits <2-1> determine the spacing between lines of displayed characters. Bit <0> is the End-of Display bit and indicates the end of display of the current screen before exhaustion of display RAM (i.e. before the 256th RAM location). The format of the Carriage Return Code is shown in Table 3. 8.1.4 SPACE CODE If bits <12-5> hold FFH, then this is the Space Code. A transparent pattern, equal to one character width, will be displayed on the screen. A mask programmable option is available that allows the space character to be transparent or to have a programmable background colour; see Section 13.1. Bits <4-1> determine the background colour of the characters that follow the Space Code in both the Box shadowing and North West shadowing modes. Bit <0> is the Active Character Monitor (ACM) enable/disable bit. The ACM signal is specifically for use in camrecorder applications where part of the display is to be recorded on tape and displayed on the screen, whilst the remaining part is for display only. Figure 9 shows a typical ACM application. During the back-tracing period R, G, B, I, FB and ACM are inactive. The format of the Space Code is shown in Table 4. Table 2 Format of Character Font Code Table 3 Format of Carriage Return Code Table 4 Format of Space Code 12 11 10 987654321 0 C7 C6 C5 C4 C3 C2 C1 C0 T4 T3 T2 T1 T0 Character Font Code (00H - FCH) Foreground colour Blink 12 11 10 9876543210 C7 C6 C5 C4 C3 C2 C1 C0 T4 T3 T2 T1 T1 Carriage Return Code (FEH) Character size Line Spacing End 12 11 10 987654321 0 C7 C6 C5 C4 C3 C2 C1 C0 T4 T3 T2 T1 T0 Space Code (FFH) Background colour ACM |
Similar Part No. - PCA8515P |
|
Similar Description - PCA8515P |
|
|
Link URL |
| Privacy Policy |
| ALLDATASHEET.NET |
| Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Contact us | Privacy Policy | Link Exchange | Manufacturer List All Rights Reserved©Alldatasheet.com |
| Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
|
Family Site : ic2ic.com |
icmetro.com |
English ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
