ALXD800EEXJ2VC C3 AMD (ADVANCED MICRO DEVICES), ALXD800EEXJ2VC C3 Datasheet - Page 39

• Manufacturer Part Number: ALXD800EEXJ2VC C3
• Manufacturer: AMD (ADVANCED MICRO DEVICES)

Specifications of ALXD800EEXJ2VC C3

• Operating Temperature (min): 0C
• Operating Temperature (max): 85C
• Operating Temperature Classification: Commercial
• Mounting: Surface Mount
• Lead Free Status / RoHS Status: Not Compliant

Signal Definitions
3.4.5
AMD Geode™ LX Processors Data Book
Signal Name
DEVSEL#
REQ[2:0]#
GNT[2:0]#
PCI Interface Signals (Continued)
Ball No.
(Strap)
AB28,
AB31,
AC30,
AB30,
AA29
AA28
AK25
Type
I/O
I/O
I
33-66 Mb/s
33-66 Mb/s
33-66 Mb/s
f
3.3
3.3
3.3
V
Description
Device Select. DEVSEL# indicates that the driv-
ing device has decoded its address as the target
of the current access. As an input, DEVSEL#
indicates whether any device on the bus has
been selected. DEVSEL# is also driven by any
agent that has the ability to accept cycles on a
subtractive decode basis. As a master, if no
DEVSEL# is detected within and up to the sub-
tractive decode clock, a master abort cycle
results, except for special cycles that do not
expect a DEVSEL# returned.
Request Lines. REQ# indicates to the arbiter
that an agent desires use of the bus. Each mas-
ter has its own REQ# line. REQ# priorities are
based on the arbitration scheme chosen.
REQ2# is reserved for the interface with the
AMD Geode CS5536 companion device.
Grant Lines. GNT# indicates to the requesting
master that it has been granted access to the
bus. Each master has its own GNT# line. GNT#
can be pulled away any time a higher REQ# is
received or if the master does not begin a cycle
within a set period of time.
GNT# is an output during normal operation. It is
an input at reset and functions as a boot strap for
frequency selection on a board. It must be pulled
high or low to invoke the strap.
GNT2# is reserved for the interface with the
AMD Geode CS5536 companion device.
33234H
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