Philips DVD763SA/001, DVD763SA/021 manual Clock Factory, Miscellaneous, Power Supply diagram M7

EN 72 9. DVD763SA Circuit Descriptions and List of Abbreviations

Clock Factory

One clock factory is implemented to support all clocks required by the Furore 2. The various master clock, which depends on whether SACD is present, is used for SD4.00_SA_CH. The clock factory of SD4.00_SA_CH is showed in Figure 8-2.

Service

5V

1k

DAC Clock

16.9344 MHz

		16.9344 MHz
		FURORE 2 (Optional)
Clock	16.9344 MHz		IC S612G
			SACD Clock

27MHz

S1

MK2703STR

PLL Audio Clock

27MHz P-SCAN

FURORE 2

4901

STi55XX

256*FS

DAC FURORE 2

Out

100R

4k TXD_SER

16.9344 MHz

Buffer	Source (PLL)
		27MHz
		Oscillator
		(Option)

Synthesizer

SEL ACLK1 SEL ACLK2

Audio Clock

256*FS

PCM_CLK

STi55XX

CL 26532053_023.eps 160502

1n5

4k

3V3

10k

Figure 9-7 Block diagram clock factory

For the SACD player, the clock system is a DAC master clock system. For non-SACD player, the clock system is a mono board master clock system.

The Furore 2 supports clock 256*FS/384*FS/512*FS. The most convenient value in the market is 16.9344 MHz (384*FS, FS=44.1KHz). Therefore, the master clock on the SD4.00_SA_CH mono board is the 384*FS coming from the A/

In 10k

6k8

RXD_SER

10k

CL 16532163_049.eps 230102

V board. The 384*FS (16.9344 MHz) from the DAC clock, must always be present. It is buffered before it is sent to the Furore 2 and the rest of the clock factory. The IC S612G delivers a 27 MHz system clock.

The Furore 2 and Sti5580/Sti5588 (Video) use this clock. It is used to derive the PCM audio clocks 256*FS by the MK2703STR. This IC is also used to buffer the incoming 27 MHz clock.

The communication between the Sti55xx and the Furore 2 is asynchronous.

To support non-SACD playback, an on-board 27MHz oscillator delivers the master clock for SD4.00_SA_CH mono board.

Miscellaneous

Most general IO ports are connected directly to the module interface. Compared with the SD3.0 module, some on-board circuits are removed, as it made more sense (and more cost effective) to implement these circuits externally.

Figure 9-8 Service Port Buffer

The service port (see diagram M5) is simplified to reduce cost. The unused RTS and CTS lines are no longer connected. A transistor buffer (item 7508) is used instead of the Schmitt Trigger buffer (item 7501).

The overall loading and driving capability of the RS-232 emulator port is not greatly changed. However, as a precaution, the Schmitt Trigger circuit remains in the layout as an optional implementation.

This SD4.0SA_CH has the same ComPair connector as in previous DVD generations. Flashing of the application-SW is not possible with the ComPair cable, except with a CD-R disc. For sets with Mask-ROM software, replace it with a programmed Flash (available via your Philips Service organisation).

SCART Status Signal

The SCART0 and SCART1 signals are directly available at the module interface, where the 0_6_12V signal is generated. See table below:

Table 9-1 0_6_12V SCART status truth table

Function	PIO3_6	PIO3_7	0_6_12V
	(SCART0)	(SCART1)	(at SCART
			connector)
TV display	1	1	0V
TV display	0	1	0V
16:9 aspect ratio	1	0	+6V
4:3 aspect ratio	0	0	+12V

Mute

The audio MUTE signal (active 'high') is directly available at the module interface.

Power Supply (diagram M7)

Changer only)		12V
		5V
5-Disc
1701 for	supply)	3.3V
		regulator
(Option	(power
1703		3.3V
		regulator
Interface		3.3V
AV 4.0
		2.5V /1.8V
		regulator
		1.8V
		regulator

Front-end

motor driver

Front-end

5V

Front-end

3.3V

Furore 2

3.3V

Back-end

2.5V / 1.8V

Back-end

2.5V / 1.8V

Furore 2

1.8V

CL 26532053_020.eps 260402

Figure 9-9 Mono Board Power Supply Block Diagram

The main power supplies to the module are 3.3V, 5V, and 12V (input via connector 1703).