ALXD800EEXJCVD C3 AMD (ADVANCED MICRO DEVICES), ALXD800EEXJCVD C3 Datasheet - Page 39
ALXD800EEXJCVD C3
Manufacturer Part Number
ALXD800EEXJCVD C3
Description
Manufacturer
AMD (ADVANCED MICRO DEVICES)
Datasheet
1.ALXD800EEXJCVD_C3.pdf
(680 pages)
Specifications of ALXD800EEXJCVD C3
Operating Temperature (min)
0C
Operating Temperature (max)
85C
Operating Temperature Classification
Commercial
Mounting
Surface Mount
Lead Free Status / RoHS Status
Compliant
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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
39
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