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Description of adopted new technology
Digital signal circuit
Data Flow
The following figure shows the block diagram of digital signal circuit.
D V D R O M
D R IV E
P G 1101
27 M H z X 'T AL
X 1
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
Reference Clock of each IC
IC
IC1201 A/V PROCESSOR
IC1601 FLASH MEMORY
IC1202~IC1203 BUFFER RAM
IC1604 EEPROM
Chapter 1
F LAS H M E M O R Y
8M b it
IC 1 602
A/V P R O C E S S O R
IC 1 201
C
C
pixels to video encoder (IC2201).
B
R
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.
Nil (Control signal is generated by IC1201)
Nil (Control signal is generated by IC1201)
Nil (Control signal is generated by IC1201)
B U FF E R R AM
16M b it x 2 S D R AM
IC 1 202~IC 1203
E E P R O M
IC 1 604
Reference Clock
T O AU D IO D AC
T O V ID E O
E N C O D E R
5
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