Avalue EEV-EX03 - Manual (Page 27)

Quick Installation Guide
EEV-EX03 Quick Installation Guide 27
LOCK#
Lock Resource Signal. This pin indicates that either the PCI master or the bridge
intends to run exclusive transfers.
DEVSEL#
Device Select. When the target device has decoded the address as its own cycle,
it will assert DEVSEL#.
TRDY#
Target Ready. This pin indicates that the target is ready to complete the current
data phase of a transaction.
IRDY#
Initiator Ready. This signal indicates that the initiator is ready to complete the
current data phase of a transaction.
STOP#
Stop. This signal indicates that the target is requesting that the master stop the
current transaction.
FRAME#
Cycle Frame of PCI Buses. This indicates the beginning and duration of a PCI
access. The access will be either an output driven by the Northbridge on behalf of
the CPU, or an input during PCI master access.
PCIRST#
PCI Bus Reset. This is an output signal to reset the entire PCI Bus. This signal is
asserted during system reset.
INTRA#,
INTRB#,
INTRC#,
INTRD#
PCI interrupts.
These interrupts are sharable and are typically wired in rotation to PCI slots or
devices.
IDSEL
This pin is not present on the EEV-EX03 module connector, but it is present on
each PCI slot connector or device. IDSEL is an input to the device that is used to
set the device’s configuration address for PCI configuration cycles. The IDSEL pin
of each device is typically connected to one of the AD lines in order to set a unique
configuration address.
In ETX systems, the four external bus slots or devices are assumed to use
AD[19:22] for IDSEL connections.
PME# Power management event.
2.3.27.2 Audio Signals
Signal Signal Description
SNDL/ SNDR
Line-level stereo output left/ right. These outputs have a nominal level of 1 volt
RMS into a 10K impedance load. These outputs cannot drive low-impedance
speakers directly.
AUXAL/ AUXAR
Auxiliary A input left/ right. Normally intended for connection to an internal or
external CDROM analog output or a similar line-level audio source. Minimum input
impedance is 5KOhm.
Nominal input level is 1 volt RMS.
MIC
Microphone input. Minimum input impedance is 5KOhm, max. Input voltage is 0.15
Vp-p.
ASGND
Analog ground for sound controller. Use this signal ground for an external amplifier
in order to achieve lowest audio noise levels.
ASVCC
Analog supply voltage for sound controller. This is an output which is used for
production test only. Do not make external connections to this pin.
2.3.27.3 USB Signals
Signal Signal Description
USB [0:3]
Universal Serial Bus Port [0:3] positive signal.
These are the serial data pairs for USB Port N-and Port N#.
USB [0:3]-
Universal Serial Bus Port [0:3] negative signal.
These are the serial data pairs for USB Port N-and Port N#.