PCB8517 Просмотр технического описания (PDF) - Philips Electronics

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PCB8517

Stand-alone OSD for monitor applications

Philips Electronics 

Philips Semiconductors

Stand-alone OSD for monitor applications

Objective specification

PCB8517

handbook, full pagewidth

0

0

COLUMN

23 24

29 30

31

ROW

CHARACTER DISPLAY BUFFERS

RESERVED

ROW

CONTROL

9

WINDOW 1 WINDOW 2 WINDOW 3 FRAME

10 CONTROL CONTROL CONTROL CONTROL

0

23

56

89

12 13

RESERVED

31

MGD763

Fig.4 Internal RAM map.

DISPLAY BUFFERS

Table 3 Display buffers; see Table 4

BIT 7

CCS0

BIT 6

CA6

BIT 5

CA5

DATA BYTE

BIT 4

CA4

BIT 3

CA3

BIT 2

CA2

BIT 1

CA1

BIT 0

CA0

Table 4 Explanation of Table 3

BIT

7

6 to 0

NAME

DESCRIPTION

CCS0

This bit defines the characters colour. When the character has no window background

with it, colour 0 is selected if CCS0 = 0, otherwise colour 1 is selected. When the

character is inside a window and the CCS1 bit of the corresponding windows control

register is 0, the colour selection is the same as no window background, and if

CCS1 = 1, colour 2 is selected when CCS0 = 0, otherwise colour 3 is selected.

CA6 to CA0 These 7 bits define 1 of 128 character symbols to be displayed in this position.

1997 Mar 03

7

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