Power On Sequence - Pioneer DJD-707 Service Manual

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7.1.3 POWER ON SEQUENCE

A
B
C
Reading Setup data for the noncontact fader
D
• Main loop (2 msec period)
Process contents
Process of headphone
Process of fader start signal
• Timer interrupt (100 µsec period)
Process contents
Fader control (Perform the following 1 process by 1 interrupt. Each process becomes a 500 µsec period.)
0: There is no process
1: Volume process of cross fader
2: Volume process of CH1
E
3: Volume process of CH2
4: PWM output
Reading of switches and volumes
F
116
1
2
IC718
System CPU
Setting of registers in the CPU
Port setting
Timer setting
A/D conversion setting
Clearing the internal RAM
Checking Checker mode
Checking Service mode
To normal operation
2
3
Note:
Communication with exterior IC is not performed at the time of
initialization of DJM-707.
Therefore, processing from "Setup of registers in the CPU" to
"Normal operation" is performed inside of the microcomputer.
DJM-707
3
4
4