PCA8514 datasheet(19/64 Pages) PHILIPS

19 / 64 page

1995 Nov 27

Philips Semiconductors

Product speciﬁcation

Stand-alone OSD

PCA8514

9.4

Command 3

Table 18 Command 3 format

Command 3 loads the DCR Address Register with the

4 MSBs of the RAM address to which data will be written.

9.5

Command 4

Table 19 Command 4 format

Command 4 loads the DCR Address Register with the

4 LSBs of the RAM address to which data will be written.

9.6

Command 5

Table 20 Command 5 format

Command 5 is used to load character data into the DCR

Character Register. The data will specify either a

Character Font Code, the Test Code, the Carriage Return

Code or the Space Code. These codes are explained in

detail in Section 8.1.

9.7

Command 6

Table 21 Command 6 format

Command 6 loads the programmable 6-bit counter of the

OSD clock oscillator. The output frequency (fOSD) is a

function of the decimal value of the 6-bits loaded in by

Command 6; see Chapter 11.

BS1 BS0

76543210

0011

BS1 BS0

76543210

0011

BS1 BS0

76543210

C6C5C4C3C2C1C0

BS1 BS0

76543210

9.8

Command 7

Table 22 Command 7 format

This command loads Control Register 1 with data that

selects the scanning mode, the output polarity of signals

FB, ACM, R, G, B and I, and also enables/disables the

OSD clock.

With reference to the scanning modes: 1V/2V is the

conventional NTSC or PAL scanning mode; 1V/2H is the

Line Progress Scan used for the IDTV in NTSC and 2V/2H

is for the PAL system and is known as 50 to 100 Hz scan

conversion.

Table 23 Selection of Scanning Mode

Table 24 Selection of output polarity (see Fig.13)

Table 25 OSD clock control

BS1 BS0

76543210

0100

SCAN MODE

1V/1H; NTSC 525LPF/60 Hz or

PAL 625LPF/50 Hz; see Fig.11. This is the

default setting.

reserved

1V/2H; NTSC 1050LPF/60 Hz; see Fig.11.

2V/2H; PAL 1250LPF/100 Hz; see Fig.12.

OUTPUT POLARITY (FB, ACM, R, G, B, I)

active LOW

active HIGH (the default setting)

OSD CLOCK

disabled (the default setting)

enabled

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