SPSH4 Server SystemTechnical Product Specification
Revision 1.11
Intel reference number 10736
31
Item
Description
Min
Max
Units
T
sb_on_delay
Delay from AC being applied to 5VSB being within regulation.
1500
msec
T
ac_on_delay
Delay from AC being applied to all output voltages being within regulation.
2500
msec
T
vout_holdup
Time all output voltages, including 5VSB, stay within regulation after loss of
AC.
21
msec
T
pwok_holdup
Delay from loss of AC to deassertion of PWOK
20
msec
T
pson_on_delay
Delay from PSON
#
active to output voltages within regulation limits.
5
400
Msec
T
pson_pwok
Delay from PSON
#
deactive to PWOK being deasserted.
50
Msec
T
acok_delay
Delay from loss of AC input to deassertion of ACOK
#
. 20
Msec
T
pwok_on
Delay from output voltages within regulation limits to PWOK asserted at
turn on.
100 1000 Msec
T
pwok_off
Delay from PWOK deasserted to output voltages (3.3V, 5V, 12V, -12V,
5VSB) dropping out of regulation limits.
1 Msec
T
pwok_low
Duration of PWOK being in the deasserted state during an off/on cycle
using AC or the PSON signal.
100
Msec
T
sb_vout
Delay from 5VSB being in regulation to 5V being in regulation at AC turn
on.
50 1000 Msec
Figure 15: Turn On/Off Timing
AC Input
Vout
PWOK
5VSB
PSON
ACOK#
T
sb_on_delay
T
AC_on_delay
T
pwok_on
T
vout_holdup
T
pwok_holdup
T
pson_on_delay
T
sb_on_delay
T
pwok_on
T
pson_off_delay
T
pwok_off
T
pwok_off
T
pson_pwok
T
acok_delay
T
pwok_low
T
sb
_vout
AC turn on/off cycle
PSON turn on/off cycle
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