mitac 8355.pdf - tim.id.au
mitac 8355.pdf - tim.id.au
mitac 8355.pdf - tim.id.au
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Power Management and Event Detection<br />
Signal Name Pin # I/O Signal Description<br />
PWRBTN# AD2 I Power Button.Used by the Power Management<br />
subsystem to monitor an external system on/off but<br />
SLPBTN#/GPIO21<br />
/ACSDIN3 /PCS1#<br />
8355 N/B MAINTENANCE<br />
on or switch. Internal logic powered by VSUS33.<br />
V1 I Sleep Button. Used by he Power Management<br />
subsystem to monitor an external sleep but on or<br />
switch.RxE4[6]=1,80[6]=1,E5[2]=0 and PMIO<br />
Rx4C[21]=1<br />
RSMRST# AD5 I Resume Reset. Resets he internal logic connected o<br />
he VSUS33 power plane and also resets portions of<br />
he internal RTC logic. Internal logic powered by<br />
VBAT.<br />
EXTSMI#/GPI2 AA1 IOD External System Management Interrupt. When<br />
enabled o allow it ,a falling edge on this input c<strong>au</strong>ses<br />
an SMI# to be generated o he CPU o enter SMI<br />
mode.(10K PU to VSUS33 if not used)(3.3V only)<br />
PME# W3 I Power Management Event.(10K PU o VSUS33 if<br />
not used)<br />
SMBALRT# AB2 I SMB Alert .When programmed to allow it (SMB I/O<br />
Rx8[3]=1),assertion generates an IRQ, SMI,or power<br />
management event.(10K PU o VSUS33 if not used)<br />
LID#/GPI4 AC1 I Notebook Computer Display L<strong>id</strong> Open /Closed<br />
Monitor. Used by he Power Management subsystem<br />
to monitor he opening and closing of the display l<strong>id</strong><br />
of notebook computers. Can be used o detect either<br />
low-to-high or high-to-low transitions o generate an<br />
SMI#.(10K PU o VSUS33 if not used)<br />
INTRUDER#/GPI16 AD3 I Intrusion Indicator. The value of his bi may be read at<br />
THRM#/GPI18<br />
/AOLGPI<br />
5.3 VT8235 South Br<strong>id</strong>ge-7<br />
PMIO Rx20[6]<br />
Y4 I Thermal Alarm Monitor.Rx8C[3]=1.Rising or<br />
falling edges (selectable by PMIO Rx2C[6])may be<br />
detected to status at used a PMIO Rx20[10].Setting of<br />
this status bit may then be used to generate an SCI or<br />
SMI. THRM# may also be used to enable duty cycle<br />
control of stop-clock (STPCLK#)o <strong>au</strong>tomatically<br />
limit maximum temperature (see Device 17 Function<br />
0 Rx8C[7-3]).<br />
RING#/GPI3 Y2 I Ring Indicator. May be connected to external<br />
modem circuitry to allow he system to be re-activated<br />
by a received phone call.(10K PU to VSUS33 if not<br />
used)<br />
BATLOW#/GPI5 W4 I Battery Low Indicator. (10K PU to VSUS33 if not<br />
used)(3.3V only)<br />
Power Management and Event Detection Continue<br />
Signal Name Pin # I/O Signal Description<br />
CPUSTP#/GPO5 AC7 O CPU Clock Stop (RxE4[0]=0).Signals the system<br />
clock generator to disable the CPU clock outputs. Not<br />
connected if not used.<br />
PCISTP#/GPO6 AF6 O PCI Clock Stop (RxE4[1]=0).Signals the system<br />
clock generator o disable he PCI clock outputs. Not<br />
connected if not used.<br />
SUSA#/GPO1 AA2 O Suspend Plane A Control (Rx94[2]=0).Asserted<br />
during power management POS, STR, and STD<br />
suspend states. Used to control the primary power<br />
plane.(10K PU to VSUS33 if not used)<br />
SUSB#/GPO2 AF2 O Suspend Plane B Control (Rx94[3]=0).Asserted<br />
during power management STR and STD suspend<br />
states. Used o control he secondary power plane.(10K<br />
PU o VSUS33 if not used)<br />
SUSC# AF1 O Suspend Plane C Control. Asserted during power<br />
management STD suspend state. Used to control he<br />
tertiary power plane. Also connected to ATX<br />
power-on circuitry. (10K PU o VSUS33 if not used)<br />
SUSST1#/GPO3 Y3 O Suspend Status 1 (Rx94[4]=0).Typically connected<br />
to the North Br<strong>id</strong>ge to prov<strong>id</strong>e information on host<br />
clock status. Asserted when the system may stop the<br />
host clock, such as Stop Clock or during POS, STR,<br />
or STD suspend statues. Connect 10K PU to<br />
VSUS33.<br />
SUSCLK AB1 O Suspend Clock.32.768 KHz output clock for use by<br />
the North Br<strong>id</strong>ge (e.g.,VT8633 or VT8366)for<br />
DRAM refresh purposes. Stopped during<br />
Suspend-to-Disk and Soft-Off modes. Connect 10K<br />
PU to VSUS33.<br />
CPUMISS /GPI17 Y1 I CPU Missing. Used to detect the physical presence<br />
of the CPU chip in its socket. High indicates no CPU<br />
present. Connect to he CPUMISS pin of the CPU<br />
socket.The state of his pin may be read in the SMBus<br />
2 registers.This pin may be used as CPUMISS and<br />
AOLGPI /GPI18<br />
/THRM#<br />
GPI17 a the same <strong>tim</strong>e.<br />
R2 I Alert On LAN. The state of this pin may be read in<br />
the SMBus 2 registers. This pin may be used as<br />
AOLGPI, GPI18andTHRM#alla the same <strong>tim</strong>e.<br />
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