Power On Sequence - Pioneer DVJ-X1 Service Manual

5

7.1.2 POWER ON SEQUENCE

Player section
Power on
Canceling reset of
SODC (IC2100), Pin 45
Initial setting
Initialization of
loading mechanism
A disc can be loaded
before communication
between the main CPU
and the player section
starts.
After a disc is loaded, loading
and startup processes begin.
After a disc is loaded, loading
and startup processes begin.
Reading data, etc.
5
6
MAIN CPU
Power on
Canceling reset of
CPU (IC111), Pin 193
Initial setting for the CPU
Initialization of the SDRAM
Program transfer from
FLASH to SDRAM
Data and clock output
from Pins 164 and 165
of the CPU (IC111).
Program transfer to the
When data transfer to
FPGA
the FPGA is finished,
FPGA_DONE (Pin 125)
becomes high.
Program transfer to the
DSP (IC505, IC506)
Canceling reset of
peripheral devices
Communications with the
Operation section start.
Communications with the
ATAPI system start.
If the result of the check
Checking peripheral
is NG, error E70** is
devices
generated.
Long press processing
of the key In the power ON
If a disc is loaded,
the playback process
starts.
Distinction
CD
between
DVD/CD
DVD
CD playback
DVD playback
process
process
DVJ-X1
6
7
CPU for the Operation section
Power on
Canceling reset of the
CPU (IC3004), Pin 12
Initial setting for the CPU
"POWER ON" is indicated
on the FL display.
All LEDs, including the
buttons but excluding
the REV LED, light up.
Long press processing
of the key In the power ON
Once communication
with the main CPU is
established, the
"POWER ON"
indication disappears.
Input of statuses of keys,
output of display data
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8
A
B
C
D
E
F
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