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Figure 4-1 Define Of Gpio - Hitachi HF-BX1000 Instruction Manual

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4. SPECIFICATIONS
GPIO signal is effective only in the period which this equipment has been running. (The period B
of the following figure). During the period until equipment starts, a signal outputs low-level (The
period A of the following figure). Make sure you use open drain for output of user's circuit.
<Define of output pin>
Object pin:4,5,9
System
G3
Power
States
H
L
<Define of input pin>
Object pin:6,7,8
H
L
(*3) When using our RAS software, the RMTSHTDN signal supervises a signal in polling in
a cycle of 500 ms first, in order to prevent incorrect detection. Next, polling is carried
out every 100 ms after detecting low-level. By this polling, it is considered that
RMTSHTDN was inputted at the time it is six continuation low-level. GENDI0 signal
and GENDI1 signal are recommended the interface which prevents incorrect detection
like the RMTSHTDN signal.
At the time of
setup BIOS
S5
Period A
Several 100ms
High signal with
a pull-up resister
(1kΩ)
Low signal with
an output transistor
Period A
Several 100ms
出力トランジスタで

Figure 4-1 Define of GPIO

G3:The computer's power has been totally removed.
S5:Almost the same as G3, except that the power supply unit
supplies power (+5Vsub-power ON).
S0:Working(+5Vsub-power ON).
S0
Period B
Low signal with
an output transistor
Period B
Turns on/off in the user's circuit.
pull-up to 1kΩ
(If is not connected; High)
4-18
G3
S5

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