Sony S530D manual Converters IC902, IC905 IC907, CH78O, CH12O, CH34O, CH56O

Audio DSP IC501

Purpose:

·Down-mixing of six channel AC-3 into two (L/R) channels

·Dolby Prologic decoding

·Audio enhancements when there is no AC-3 received (this rear chan- nel delay circuitry is only found in some models):

qDigital Cinema Soundâ gives you the illusion of various spatial room environments

qVirtual Enhanced Surround (VES) for 3D sound with two speakers

qEnhanced Surround for a greater sense of presence from the normal Dolby Prologic sound

·Digital coax and optical output

·Rear channel delay

·Front/rear level balancing

·Test tone generation

Outputs:

DSP IC501 Output Signals

Name	From	Purpose	When present
	IC501
L/R Clock	Pin 10	48kHz or 44.1kHz clk *	Power On
Bit Clock	Pin 9	2.3MHz or 2.1MHz clk. *	Power On
CH78O	Pin 11	Data for analog channels	Audio PB
CH12O	Pin 15	Data for 5.1 front channels	Audio PB
CH34O	Pin 14	Data for 5.1 rear channels	When	AC-3
			source is input
CH56O	Pin 12	Data for 5.1 center and	When	AC-3
		woofer channels	source is input
DO	Pin 16	Digital Output	Power On

* Depending upon the last disc detected. First frequency is for DVD.

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D/A Converters IC902, IC905 – IC907

Purpose

Converts the digital input to analog output when received.

Support Signals

All the D/A IC support signals go to the same pins of these ICs because they are the same number IC (CXD8799).

D/A Converter Required Signals

Name	Location		Signal	When
	pin #			Present
Vcc	8, 9	3.3V (not shown)		At power
				ON
Audio	2	Data		During PB
Data		3Vp-p
L/R Clock	1	44.1kHz = CD detected		At power
		48.kHz = DVD detected		ON
		3Vp-p
Bit Clock	3	2,116MHz = CD detected		At power
		2,304MHz = DVD detected		ON
		3Vp-p
Master	5	33.868MHz = CD detected		At power
Clock		36.864MHz = DVD detected		ON
(Xtal)
		4Vp-p
Output	13 & 16	2Vp-p (analog audio)		During PB
Chip	28	10usec, 3Vp-p, low pulse.		At play,
Select				pause, stop.
Communi	27	4 groups of 8 low going pulses.		During PB
cations
Clock
Communi	26	20usec	positive going data	During PB
cations		pulses.	Data is used for reset,
Data		mute, and gain/balance.
		H= pause or stop.