104
Sirius-PJ1Training
Slide 104
SUBCPU
IC5001
UPD78F0511A
SUB CPU
IC5005
TB6608
Motor Driver
PS_ON
4.2V
6.5V
13.5V
17V
IC5002
PS UNIT
IRIS UNIT
TCR5SB33
Reg.
5V
POMO
REMR
REMF
REB_WIRED
REM_SEL
3.3V
From RS232C Driver
From CPU
I2C
RxD/TxD
POWER_KEYIN
To DC-DC Converter
for CPU
CPU_ON
SUBCPU (IC5001) controls the power of PS-UNIT and the CPU (IC4001). When
the power is supplied, 5V is supplied to the regulator IC (IC5002) from PS-UNIT,
and 3.3V is generated for SUBCPU. This 3.3V activates SUBCPU, and the
PS_ON signal is input to PS-UNIT. This performance enables power output
other than 5V. After that, the CPU is activated by CPU_ON signal input to the
DC-DC converter for the CPU.
SUBCPU, as a substitute for the CPU, decodes the remote control's Power ON
command, and detects the Power ON command from the PC and Power key
input. In the normal Power ON state, it controls the IRIS motor driver IC(IC5005).
