Datasheet
89
Electrical Specifications
NOTES:
1.
MSID[2:0] signals are provided to indicate the maximum platform capability to the processor.
2.
MSID is used on rPGA988A platforms only.
3.
Processors specified for use with a -1.9 m
Ω
7.5
Reserved or Unused Signals
The following are the general types of reserved (RSVD) signals and connection
guidelines:
•
RSVD - these signals should not be connected
•
RSVD_TP - these signals should be routed to a test point
•
RSVD_NCTF - these signals are non-critical to function and may be left un-
connected
Arbitrary connection of these signals to V
CC
, V
TT
, V
DDQ
, V
CCPLL
, V
AXG
, V
SS
, or to any
other signal (including each other) may result in component malfunction or
incompatibility with future processors. See
for a pin listing of the processor
and the location of all reserved signals.
For reliable operation, always connect unused inputs or bi-directional signals to an
appropriate signal level. Unused active high inputs should be connected through a
resistor to ground (V
SS
). Unused outputs maybe left unconnected; however, this may
interfere with some Test Access Port (TAP) functions, complicate debug probing, and
prevent boundary scan testing. A resistor must be used when tying bi-directional
signals to power or ground. When tying any signal to power or ground, a resistor will
also allow for system testability. Resistor values should be within ±20% of the
impedance of the baseboard trace, unless otherwise noted in the appropriate platform
design guidelines. For details see
.
Table 7-37.Market Segment Selection Truth Table for MSID[2:0]
MSID[2] MSID[1] MSID[0]
Description
1,2
Notes
0
0
0
Reserved
0
0
1
Reserved
0
1
0
Reserved
0
1
1
Reserved
1
0
0
Standard Voltage (SV) 35-W Supported
3
1
0
1
Reserved
1
1
0
Reserved
1
1
1
Reserved
