ALXD800EEXJ2VD C3 AMD (ADVANCED MICRO DEVICES), ALXD800EEXJ2VD C3 Datasheet - Page 36

• Manufacturer Part Number: ALXD800EEXJ2VD C3
• Manufacturer: AMD (ADVANCED MICRO DEVICES)

Specifications of ALXD800EEXJ2VD C3

• Operating Temperature (min): 0C
• Operating Temperature (max): 85C
• Operating Temperature Classification: Commercial
• Mounting: Surface Mount
• Lead Free Status / RoHS Status: Compliant

3.4.3
3.4.4
36
Signal Name
DQM[7:0]
DQ[63:0]
Signal Name
TCLK
TMS
TDI
TDO
TDBGI
TDBGO
Memory Interface Signals (DDR) (Continued)
Internal Test and Measurement Interface Signals
N30, H29,
C24, A19,
See Table
B10, A6,
Ball No.
Ball No.
33234H
page 30
G2, M1
3-6 on
AC2
AC1
AA4
AB3
AB2
AB4
Type
Type
(PD)
I/O
I/O
O
O
I
I
I
I
166-400 Mb/s
166-400 Mb/s
0-400 Mb/s
0-400 Mb/s
0-66 Mb/s
0-66 Mb/s
0-66 Mb/s
0-66 MHz
f
f
3.3
3.3
3.3
3.3
3.3
3.3
V
2.5
2.5
V
Description
Test Clock. JTAG test clock.
Test Mode Select. JTAG test mode select.
Test Data Input. JTAG serial test data input.
Test Data Output. JTAG serial test data output.
Test Debug Input. The Debug Management
Interrupt (DMI) is input via TDBGI. The selects
for TDBGI are MSR programmable via the GLCP
module. When using TDBGI for DMI, it cannot be
used for other debug purposes. DMI can be
setup via the GLCP module to be edge sensitive
or level sensitive
Test Debug Output. The AMD Geode LX pro-
cessor can output internal clocks on TDBGO.
The selects for TDBGO are MSR programmable
via the GLCP module. The internal clock can be
selected from any clock domain and may be
divided down by 2 or 3 before output. This
enables tester and board level visibility of the
internal clock quality.
Description
Data Mask Control Bits. During memory read
cycles, these outputs control whether the
SDRAM output buffers are driven on the Mem-
ory Data Bus or not. All DQM signals are
asserted during read cycles.
During memory write cycles, these outputs con-
trol whether or not memory data is written into
the SDRAM.
DQM[0] is associated with MD[7:0].
DQM[7] is associated with MD[63:56].
Memory Data Bus.
AMD Geode™ LX Processors Data Book
Signal Definitions