Intel Celeron M 370 1.5GHz BXM80536NC1500E Scheda Tecnica
Codici prodotto
BXM80536NC1500E
Intel
®
Celeron
®
M Processor Datasheet
57
COMP[3:0]
Analog
COMP[3:0] must be terminated on the system board using precision (1%
tolerance) resistors. Refer to the platform design guides for more details on
implementation.
tolerance) resistors. Refer to the platform design guides for more details on
implementation.
D[63:0]#
Input/
Output
Output
D[63:0]# (Data) are the data signals. These signals provide a 64-bit data path
between the FSB agents, and must connect the appropriate pins on both agents.
The data driver asserts DRDY# to indicate a valid data transfer.
D[63:0]# are quad-pumped signals and will thus be driven four times in a
common clock period. D[63:0]# are latched off the falling edge of both
DSTBP[3:0]# and DSTBN[3:0]#. Each group of 16 data signals correspond to a
pair of one DSTBP# and one DSTBN#. The following table shows the grouping
of data signals to data strobes and DINV#.
between the FSB agents, and must connect the appropriate pins on both agents.
The data driver asserts DRDY# to indicate a valid data transfer.
D[63:0]# are quad-pumped signals and will thus be driven four times in a
common clock period. D[63:0]# are latched off the falling edge of both
DSTBP[3:0]# and DSTBN[3:0]#. Each group of 16 data signals correspond to a
pair of one DSTBP# and one DSTBN#. The following table shows the grouping
of data signals to data strobes and DINV#.
Furthermore, the DINV# pins determine the polarity of the data signals. Each
group of 16 data signals corresponds to one DINV# signal. When the DINV#
signal is active, the corresponding data group is inverted and therefore sampled
active high.
group of 16 data signals corresponds to one DINV# signal. When the DINV#
signal is active, the corresponding data group is inverted and therefore sampled
active high.
DBR#
Output
DBR# (Data Bus Reset) is used only in processor systems where no debug port
is implemented on the system board. DBR# is used by a debug port interposer
so that an in-target probe can drive system reset. If a debug port is implemented
in the system, DBR# is a no connect. DBR# is not a processor signal.
is implemented on the system board. DBR# is used by a debug port interposer
so that an in-target probe can drive system reset. If a debug port is implemented
in the system, DBR# is a no connect. DBR# is not a processor signal.
DBSY#
Input/
Output
Output
DBSY# (Data Bus Busy) is asserted by the agent responsible for driving data on
the FSB to indicate that the data bus is in use. The data bus is released after
DBSY# is deasserted. This signal must connect the appropriate pins on both
FSB agents.
the FSB to indicate that the data bus is in use. The data bus is released after
DBSY# is deasserted. This signal must connect the appropriate pins on both
FSB agents.
DEFER#
Input
DEFER# is asserted by an agent to indicate that a transaction cannot be
guaranteed in-order completion. Assertion of DEFER# is normally the
responsibility of the addressed memory or Input/Output agent. This signal must
connect the appropriate pins of both FSB agents.
guaranteed in-order completion. Assertion of DEFER# is normally the
responsibility of the addressed memory or Input/Output agent. This signal must
connect the appropriate pins of both FSB agents.
DINV[3:0]#
Input/
Output
Output
DINV[3:0]# (Data Bus Inversion) are source synchronous and indicate the
polarity of the D[63:0]# signals. The DINV[3:0]# signals are activated when the
data on the data bus is inverted. The bus agent will invert the data bus signals if
more than half the bits, within the covered group, would change level in the next
cycle.
polarity of the D[63:0]# signals. The DINV[3:0]# signals are activated when the
data on the data bus is inverted. The bus agent will invert the data bus signals if
more than half the bits, within the covered group, would change level in the next
cycle.
Table 25. Signal Description (Sheet 2 of 7)
Name
Type
Description
Quad-Pumped Signal Groups
Data Group
DSTBN#/
DSTBP#
DINV#
D[15:0]#
0
0
D[31:16]#
1
1
D[47:32]#
2
2
D[63:48]#
3
3
DINV[3:0]# Assignment To Data Bus
Bus Signal
Data Bus Signals
DINV[3]#
D[63:48]#
DINV[2]#
D[47:32]#
DINV[1]#
D[31:16]#
DINV[0]#
D[15:0]#