Philips DVDR615 Service Manual page 160

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EN 160 9.
IC7500, PNX7850: FEBE Board, Channel Codec/Buffer Manager/Servo Processor and Controller
Nexperia PNX7850 conceptual block diagram
ANALOG CHANNEL
CD/DVD
wobble
WOBBLE
PROCESSOR
SIGNAL
HF
CONDITION.
TACHO/MOTOR
motor
CONTROL
SERVO DSP AND CONTROL
actuators
SERVO
ACCELERATORS
LF input
OPC input
IC7926 NCP303LSN, FEBE Board , Reset Circuit
2
t
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DVDR615/69 Circuit-, IC descriptions and list of abbreviations
EFM
CODEC
EFM WRITE
CD/DVD
CLOCK/DATA
CHANNEL
GENERATOR
ENCODE/
DECODE
WITH
BIT
ERROR
DETECTION
CORRECTION
AND
DEMOD.
TELEMETRY
PROCESSOR
SERVO
DSP
OPC
NCP303LSNxxT1
Open Drain Output Configuration
Input
V
ref
3 Gnd
BUFFER
MANAGER
DATA BLOCK
ENCODE/
DECODE
MICRO MICRO
INTERFACE
INTERFACE
PI-bus
MIPS PR1910
INTERFACE
POWER
MANAGEMENT
INSTRUCTION
EXECUTION
CACHE
UNIT
DEBUG SUPPORT
COPROCESSOR DEEPLY EMBEDDED
MEMORY
Figure 9-32
1
R
D
5 C
D
Figure 9-33
SDRAM
SDRAM
CONTROLLER
UDMA66
MEMORY
HOST
PROCESSOR
INTERFACE
AUTOMATION
AUDIO
PROCESSOR
UART
INTERRUPT
CONTROLLER
CONFIG
ROM
GPIO
EJTAG
I 2 C
CSS
POWER CONTROL
AND RESET
STATIC MEMORY
INTERFACE
Flash
Reset Output
host
audio
UART
GPIO
I 2 C