Philips DVD963SA manual Audio/Video A/V Board, Reset Circuit

Page 69

Circuit Descriptions and List of Abbreviations

DVD963SA

 

9.

 

EN 83

The SACD DSD/DST decoder Furore 2 uses 1.8V for its core and analogue portion, and 3.3V for its interface. The on-board 1.8V linear regulator LF18ABDT and 3.3V linear LD1117DT33 are used to generate 1.8V and 3.3V power supply respectively. The back-end section mainly uses the 1.8V or 2.5V and 3.3V, which depend on which back-end processor is used. The on- board linear regulators LF25ABDT or LF18ABDT are used to generate the 2.5V (or 1.8V) required by the STi55xx.

The front-end section mainly uses the 5V and 12V. An on- board linear regulator LD1117DT33 can be used to generate the 3.3V required by the front-end. The 12V is used by the motor and servo drivers.

Reset Circuit

9.4.2Control

The control of the A/V board is done by I2C-decoder IC7107 (see table below):

Table 9-2 Control lines overview IC7107

Description

Pin

Hi

Lo

CLK_SEL

12

External clock

Internal clock

 

 

(DSD stream)

(PCM stream)

 

 

 

 

UPSAMPLING

11

No upsampling

Upsampling

 

 

 

 

DAC_RESET

10

Normal

Reset

 

 

 

 

CENTER_ON

9

Off

On

 

 

 

 

SPDIF-MUTE

5

Mute

No mute

Low Voltage Detection 4.5V

STi55xx

Power On

 

Reset

RESETn

Circuit

 

Delay 1

 

Furore 2

192k/96k

4 192k PCM

96k PCM

9.4.3 Video

The analogue video signals from the Mono Board are buffered

before they are fed to the A/V board. The video outputs from

the A/V Board are RGB/YUV, YC, and CVBS. These signals

Low Voltage Detection 4.5V

RSTN

Power On

Reset

Circuit

Delay 2

CLK_STBCTRL

Clock Factory

RES_P

Basic Engine

 

CL 26532053_018.eps 260402

are also fed to the double SCART board.

9.4.4 Audio

The digital audio signals for Surround, Centre and LFE

(subwoofer) are fed to a 6-channel DAC CS4362 (item 7300,

48-pin LQFP) for the audio output. This DAC accepts both DSD

and PCM data streams.

Figure 9-10 Block diagram of reset circuit

This reset circuit takes care that booting the different devices on the mono board takes place in the correct order. The correct reset order is:

1.The Power On Reset circuit (delay t1) creates a reset signal 'RESETn' to reset the STi55xx and Furore .

2.In the meantime, the Power On Reset circuit (delay t1) creates a reset signal 'CLK_STBCTRL', which is inverted to 'RESETn', to enable the Clock Factory.

3.Then, the Power On Reset circuit (delay t2) generates a reset signal 'RES_P' to reset the Basic Engine.

4.The STI55xx can now reset the Basic Engine via 'RSTN'.

9.4Audio/Video (A/V) Board

This board is the interface panel between the DVD-player and its peripherals.

9.4.1Block diagram

The digital audio signals for Front and Stereo are fed to a high

performance current output DAC AD1955 (item 7301) via a

multiplexer (item 7200) which selects either the direct PCM or

an upsampled data stream (determined by the UPSAMPLING

control line.

The Upsampling is only applicable for CD playback, and the

AD1895 sample rate converter (item 7201) converts the 44.1

kHz/16 bit audio to various formats such as 96 kHz/24 bit or

192 kHz/24 bit.

The bit and word clock, required by the upsampling DAC

AD1955 (item 7301), are derived from the 24.576 MHz master

clock (item7103) via counter (item 7204/7205).

The S/PDIF, only supports digital output upsampling of 96 kHz/

24 bit and is encoded by the digital audio transmitter AK4103

(item7203).

There is a control line from IC7107, called CENTRE_ON, which

is used to switch between the centre channel and front

channels for both SACD- and DVD modes.

See Block diagram A/V Board in chapter 6.

Image 69
Contents Contents DVD-Video PlayerDVD963SA /001 /171 /691 Technical Specifications and Connection Facilities SpecificationsSafety Instructions Safety Instructions, Warnings and NotesLaser Device Unit DolbyService Hints MechanicalInstructions Exploded View Exploded ViewSwitched Mode Power Supply Service HintsService Positions ComPairNucleus Contents of Dealer Script Diagnostic Software, Trouble Shooting and Test InstructionsDealerscript Purpose of Dealer ScriptPlayer Script Contents of Player ScriptPurpose of Player Script Survey Structure of Player ScriptDisplay PCB Remote Control TestDisplay Test LED Test5 P50 Loop-Back Test 162037.epsMono PCB Digital Part Diagnostic Software, Trouble Shooting and Test InstructionsTest can be left by pressing the Play key for more than One second Picture Test Sound 2 TestBasic Engine Error Log See Table on Error BitsLoop Test See Table Below Be Errors Uart Error CodesSlph Error Codes SSM Error CodesReprogramming of New Mono Boards SMA Error CodesCommand Overview of Nuclei Menu and Command Mode InterfaceSet-up Physical Interface Components Hardware required ActivationComponents Ref. # Reference Name Remark Processor and peripherals Ref. # Reference Name RemarkAudio Ref. # Reference Name Remark Ref. # Reference Name RemarkMenus Layout of Menu and SubmenuSecond Level Submenus First Level SubmenusNuclei Error Codes Audio Nuclei Error Error text CodeThird Level Submenus Error Error text Code Basic Engine Nuclei Error Code Error textError Code Error text Processor & Peripherals Nuclei Error Code Error text Display PWB Nuclei Error Code Error textLog Nuclei Error Code Error text Miscellaneous Nuclei Error Code Error textVideo Nuclei Error Error text Code Supply Check Test Instruction Front Display and Audio/ Video BoardClock Check Audio Mute CheckRef.# Command Name Remarks Ref.# Command Name Remarks Audio outputCommand Ref.# Name Remarks Audio output Command Ref.# Name Remarks Killlr signalPersonal Notes Block Diagram DVD963SA Block and Wiring DiagramWiring Diagram DVD963SA Scart SwitchTestpoint Overview A/V Board Testpoint Overview Display Panel Testpoint OverviewP-Scan Board Power Supply Unit DVD963SA Electrical DiagramsAV-Board Clock & Control SYS CLK & ControlAV-Board Upsampling UpsamplingAudio DAC AV-Board Current to Voltage Converter Current to Voltage ConverterAV-Board Audio AV AudioAV-Board Video and Scart AV Video and ScartLayout AV-Board Top Side Layout AV-Board Overview Bottom Side Layout AV-Board Part 1 Bottom Side Layout AV-Board Part 2 Bottom Side Display Panel Display PanelLayout Display Panel Top Side Layout Display Panel Overview Bottom Side Layout Display Panel Part 1 Bottom Side PartLayout Display Panel Part 2 Bottom Side PartScan Board Line Doubler ScanLineDoublerScanE ncoder 1003-B C9 Scan Board Video OutputPart Layout P-Scan Board Overview Top SideLayout P-Scan Board Part 1 Top Side Layout P-Scan Board Part 2 Top Side Layout P-Scan Board Overview Bottom Side Layout P-Scan Board Part 1 Bottom Side Layout P-Scan Board Part 2 Bottom Side Standby Board Layout Standby Board Top SideLayout Standby Board Bottom Side Double Scart Panel Switching Only for EU models SwitchingScart Part CL1653200795a.eps CL1653200795b.eps Layout Double Scart panel Only for EU models Part 1 Top Side Layout Double Scart panel Only for EU models Part 2 Top Side Alignments Power Supply UnitCircuit Descriptions and List of Abbreviations IntroductionPrimary Current Sensing Loader/Mono Board for diagrams seeUnder-voltage Protection Over-voltage ProtectionServo Processor/Decoder Loader InterfaceInterface/Program Memory Back-end the Digital PartSacd DSD processor Basic Engine InterfaceAudio data input/output Interface Video Output Audio OutputPower Supply diagram M7 Clock FactoryMiscellaneous Audio/Video A/V Board Reset CircuitDouble Scart Progressive Scan BoardDVD Player VCR/STB/etcControl and Display Panel ASD Abbreviation listIC Data Diagram Power Supply TY72011P2 item16 AK4103VF IC7203 Diagram A2 AK4103VF IC720317 CS4362 IC7300 Diagram A3 CS4362 IC730018 FLI2301 item Diagram P1 FLI2301 itemMechanical /001 Spare Parts ListSD4.00SA Module Mechanical /171RC22H IC SM 74LVC04ADB Phse Front PWBScan PWB Spare Parts ListScart PWB Errata Revision ListManual 3122 785
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