ALXD800EEXJ2VD AMD (ADVANCED MICRO DEVICES), ALXD800EEXJ2VD Datasheet - Page 23
ALXD800EEXJ2VD
Manufacturer Part Number
ALXD800EEXJ2VD
Description
Manufacturer
AMD (ADVANCED MICRO DEVICES)
Datasheet
1.ALXD800EEXJ2VD.pdf
(675 pages)
Specifications of ALXD800EEXJ2VD
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
3.1
The Ball Assignment tables starting on page 26 include a
column labeled “Buffer Type”. The details of each buffer
type listed in this column are given in Table 3-2. The col-
umn headings in Table 3-2 are identified as follows:
TS: Indicates whether the buffer may be put into the TRI-
STATE mode. Note some pins that have buffer types that
allow TRI-STATE may never actually enter the TRI-STATE
mode in practice, since they may be inputs or provide other
signals that are always driven. To determine if a particular
signal can be put in the TRI-STATE mode, consult the indi-
vidual signal descriptions in Section 3.4 "Signal Descrip-
tions" on page 33.
OD: Indicates if the buffer is open-drain, or not. Open-drain
outputs may be wire ORed together and require a discrete
pull-up resistor to operate properly.
5VT: Indicates if the buffer is 5-volt tolerant, or not. If it is 5-
volt tolerant, then 5 volt TTL signals may be safely applied
to this pin.
AMD Geode™ LX Processors Data Book
Name
24/Q3
24/Q5
24/Q7
5V
PCI
DDRCLK
DDR
Wire
Buffer Types
NA
TS
X
X
X
X
X
Table 3-2. Buffer Type Characteristics
OD
NA
5VT
X
PU/PD
PU/PD: Indicates if an internal, programmable pull-up or
pull-down resistor may be present.
Current High/Low (mA): This column gives the current
source/sink capacities when the voltage at the pin is high,
and low. The high and low values are separated by a “/”
and values given are in milli-amps (mA).
Rise/Fall @ Load: This column indicates the rise and fall
times for the different buffer types at the load capacitance
indicated. These measurements are given in two ways:
rise/fall time between the 20%-80% voltage levels, or, the
rate of change the buffer is capable of, in volts-per-nano-
second (V/ns).
Note the presence of “Wire” type buffer in this table. Sig-
nals identified as a wire-type are not driven by a buffer,
hence no rise/fall time or other measurements are given;
these are marked “NA” in Table 3-2. The wire-type connec-
tion indicates a direct connection to internal circuits such
as power, ground, and analog signals.
NA
X
X
X
High/Low
Current
0.5/1.5
24/24
24/24
24/24
16/16
10/10
(mA)
NA
33234C
Rise/Fall @ Load
1.25V/ns @ 40 pF
1-4V/ns @ 10 pF
8.5V/ns @ 15 pF
2.4V/ns @ 50 pF
3 ns @ 50 pF
5 ns @ 50 pF
7 ns @ 50 pF
NA
23
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