3-3 LOGIC UNIT
LOGIC UNIT generally controls the whole of the circuit of the
IC-R9500, and processes audio signal.
MAIN CONTROLLER
Two CPU’s; IC103 (CPU1) and IC604 (CPU2) communicate
each other via the dual port SRAM (IC51). As the external
I/O port for these two CPU’s, CPU1 has CPLD (IC52) and
CPU2 has CPLD (IC605) to control each in/output. An
external SDRAM is connected to the CPU1 for work space.
On the MEMORY BOARD, two FLASH ROMs (IC1 and IC2)
are mounted for storing program, image and audio fi les.
VIDEO, AUDIO AND USB PROCESSOR
IC203 is a processor for video, audio and USB, and each
data is stored in SDRAM (IC201, IC202).
LAN DRIVER
LAN driver IC (IC404) conduct the LAN communications via
the pulse trans (T401). The EEPROM (IC403) stores the
settings for LAN connection.
COMPACT FLASH
IC402 is the power controller for inserted compact flash
card, and its output voltage is selected from 5V and 3.3V.
VIDEO SIGNAL PROCESSOR
IC856 is a video encode/decode IC and converts the analog
composite video signal to digital video signal, and converts
the digital video signal into analog RGB video signal.
A portion of the video signal (RGB) is output to the FRONT
UNIT, and other is converted into the analog RGB signal and
output from the J803.
3 - 5
AC
IN
AC-SW
AC-DC
H15V
H15V
REG
H3R3V
FRONT
POWER SW
PWRK
FRONT
CPU
SW
VDD15V
REG
REG
VDD3R3VA
VDD3R3VB
LOGIC
CIRCUITS
VDD15V
VDD5V
REG
VDD1R2V
REG
SW
PWRS
15V
REG
REG
3R3VA
3R3VB
REG
REG
28V
–12V
REG
REG
8V
5V
ANALOG
CIRCUITS
REG and DCDC UNITS
LOGIC UNIT
FRONT UNIT
LG_PWR
H5V
REG
• VOLTAGE BLOCK DIAGRAM
3-4 POWER SUPPLY CIRCUITS
Voltage from the power supply is routed to the whole of the receiver.