Power On Sequence - Pioneer SVM-1000 Service Manual

5

5.2 POWER ON SEQUENCE

Main Microcomputer
Power ON.
Resetting of the Main micro-
computer is canceled.
The booting section
starts up.
Booting section
Each device is reset.
Resetting of the Submicro-
computer/GDC is canceled.
The program section is
developed in SDRAM.
Download mode?
No
The compatibility
of the program is
checked.
GOOD
The program starts up.
5
6
Resetting is canceled when
Pin 37 is set to High.
Resetting is canceled when
Pin 83 is set to HIGH.
Yes
NG
Process of
Download mode
6
7
Program section
Drawing data are transmitted to GDC.
Startup screen 1 is displayed.
A request for start of communication
with the submicrocomputer is issued.
Resetting of VADC/VDAC is canceled.
Waiting for start of communication
with the submicrocomputer.
Communication with the sub-
microcomputer starts.
A request to clear the FPGA1
program is issued.
Loading of the FPGA1
program starts.
A request to clear the FPGA2
program is issued.
Loading of the FPGA2
program starts.
Waiting for startup of FPGA
Resetting of AudioDSP is canceled.
Resetting of VideoDSP is canceled.
Waiting for Video DSP stabilization
Resetting of FPGA1 and FPGA2
is canceled.
Waiting for canceling of FPGA reset
Loading of the Video DSP
program
Real-time initialization of the OS
Creation of each task
Real-time startup of the OS
Main task section
Checker mode?
No
Service mode?
No
Main process
SVM-1000
7
8
With Pin 171 set to HIGH
With Pin 51 set to HIGH
Waiting time: 10 msec
Start of switching Pin 171 between
H and L triggers communication.
With Pin 74 set to HIGH
The FPGA1 program is cleared with
Pin 69 set to H, data are output
with Pin 81 set to H, and a clock is
output with Pin 50 set to H.
With Pin 70 set to HIGH
The FPGA2 program is cleared with
Pin 53 set to H, data are output
with Pin 81 set to H, and a clock is
output with Pin 50 set to H.
Waiting time: 7 msec
With Pin 86 set to HIGH
With Pin 121 set to HIGH
Waiting time: 7 msec
With Pin 61 set to HIGH
Waiting time: 1 msec
Yes
Process of Checker mode
Yes
Process of Service mode
8
A
B
C
D
E
F
25