Figure 5-1 Definition Of Output Pin Of External Contact Part (When There Is No Output Just Before S5); Figure 5-2 Definition Of Output Pin Of External Contact Part (When There Is Output Just Before S5) - Hitachi HF-W100E Instruction Manual

External general purpose I/O signal is effective only in the period which this equipment has been
running. (Period A in the figure below).
When power goes off (G3 state) to standby state (S5 state), general output (GENDO0 to 7) is
output at high level until BIOS initialization is completed. By using it together with the
PWR_STATUS signal, it is possible to detect the general-purpose output in the state where the
equipment is running.
Also, when the equipment enters the standby state (S5 state) from the equipment start state (S0
state), the values of the general-purpose output (GENDO0 to 7) are retained in the previous state.
BIOS setting:
Output High (default)
(Example)
Output pin：GENDO0
High level output until BIOS
initialization is completed
Output pin：PWR_STATUS
(High level output by
equipment start)

Figure 5-1 Definition of Output Pin of External Contact Part (When There is No Output Just Before S5)

(Example)
Output pin：GENDO0
High level output until BIOS
initialization is completed
Output pin：PWR_STATUS
(High level output by
equipment start)

Figure 5-2 Definition of Output Pin of External Contact Part (When There is Output Just Before S5)

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).
S5
G3
H
L
H
L
S5
G3
Period A
H
L
Keep last state
H
L
S0
S5
Period A
Keep last state
S0
S0
S5
Period A
5-17
5. SPECIFICATION
G3 S5
High level output until
BIOS initialization is
completed
S5