Chapter 1
5
Description of adopted new technology
Digital signal circuit
Data Flow
The following figure shows the block diagram of digital signal circuit.
The disc data read by DVD ROM Drive will be passed to A/V processor (IC1201) throught 16 bits parallel
interface. A/V processor (IC1201) parses the system layer and demultiplexes the audio and video streams.
Audio is decoded and passed through the audio interface to external audio DACs (IC 1501~1503) and then to
the speakers. Video is decoded and output as Y
C
B
C
R
pixels to video encoder (IC2201).
Reference Clock of each IC
IC
Reference Clock
IC1201 A/V PROCESSOR
System clock and video interface clock are input from X1201 27MHz X'TAL.
Audio interface clock is output at 39 pin named DA-XCK to Audio DAC.
IC1601 FLASH MEMORY
Nil (Control signal is generated by IC1201)
IC1202~IC1203 BUFFER RAM
Nil (Control signal is generated by IC1201)
IC1604 EEPROM
Nil (Control signal is generated by IC1201)
D V D R O M
D R IV E
P G 1101
F L AS H M E M O R Y
8M b it
IC 1 602
B U F F E R R AM
16M b it x 2 S D R AM
IC 1 202~IC 1203
27 M H z X 'T AL
X 1
A/V P R O C E S S O R
IC 1 201
T O AU D IO D AC
T O V ID E O
E N C O D E R
E E P R O M
IC 1 604
Содержание DV-P505E
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