86
Prestigio Cavaliere 141
Technical Service Manual
5. Pin Descriptions of Major Components
IED Inter face
Name
Pin Attr
Signal Descr iption
IDA[15:0]
I/O
3.3V/5V -M
Primary Channel Data Bus
IDB[15:0]
I/O
3.3V/5V -M
Secondary Channel Data Bus
IDECSA[1:0]#
O
3.3V -M
Primary Channel CS[1:0]
IDECSB[1:0]#
O
3.3V -M
Secondary Channel CS[1:0]
IIOR[A:B]#
O
3.3V -M
Primary/Secondary Channel IOR# Signals
IIOW[A:B]#
O
3.3V -M
Primary/Secondary Channel IOW# Signals
ICHRDY[A:B]
I
3.3V/5V -M
Primary/Secondary Channel ICHRDY# Signals
IDREQ[A:B]
I
3.3V/5V -M
Primary/Secondary Channel DMA Request Signals
IDACK[A:B]#
O
3.3V -M
Primary/Secondary Channel DMACK# Signals
IIRQ[A:B]
I
3.3V/5V -M
Primary/Secondary Channel Interrupt Signals
IDSAA[2:0]
O
3.3V -M
Primary Channel Address [2:0]
IDSAB[2:0]
O
3.3V -M
Secondary Channel Address [2:0]
CBLID[A:B]
I
3.3V/5V -M
Primary/Secondary Ultra-66 Cable ID
Power Management Inter face
Name
Pin Attr
Signal Descr iption
ACPILED
OD
<=5V -AUX
ACPILED :
ACPILED can be used to control the blinking of an LED at the
frequency of 1Hz to indicate the system is at power saving
mode.
EXTSMI# /
GPIO3
I
I/O
3.3V/5V -M
Exter nal SMI#:
EXTSMI# can be used to generate wakeup event, sleep event, or
SCI/SMI# event to the ACPI compatible power management
unit.
PME#
I
3.3V/5V -AUX
PME# :
When the system is in power-down mode, an active low event
on PME# will cause the PSON# to go low and hence turn on the
power supply. When the system is in suspend mode, an active
PME# event will cause the system wakeup and generate an
SCI/SMI#.
PSON#
OD
<=5V -AUX
ATX Power ON/OFF contr ol:
PSON# is used to control the on/off state of the ATX power
supply. When the ATX power supply is in the OFF state, an
activated power-on event will force the power supply to ON
state.
AUXOK
I
3.3V -AUX
Auxiliar y Power OK:
This signal is supplied from the AUX power source. It is also
used to reset the logic in AUX power well. If there is no
auxiliary power source on the system, this pin should be tied
together with PWROK.
PWRBTN#
I
3.3V/5V -AUX
Power Button:
This signal is from the power button switch and will be
monitored by the ACPI-compatible power management unit to
switch the system between working and sleeping states.
RING /
GPIO8
I
I/O
3.3V/5V -AUX
Ring Indication:
An active RING pulse and lasting for more than 4ms will cause
a wakeup event for system to wake from S1~S5.
BCLK_STP#
GPIO12
O
I/O
3.3V/5V -AUX
Stop CPU clock:
Output to the external clock generator for it to turn off the CPU
clock during C3/Sx.
DPRSLPVR
GPIO13
O
O
3.3V/5V -AUX
Deeper Sleep:
DPRSLP# can be used to lower the Intel processor voltage
during C3/S1 state.
Legacy I/O and Miscellaneous Signals
Signal Name
Pin Attr
Signal Descr iption
SPK
O
3.3V -M
Speaker output:
The SPK is connected to the system speaker.
ENTEST
I
3.3V/5V -M
SiS961 Test Mode Enable Pin
OSCI
I
3.3V -M
SiS961 Test Mode Enable Pin
5.3 SiS961(MuTIOL® Media I/O South Bridge )
