Intel G870 CM8062307260115 User Manual

70

Datasheet, Volume 1

1.

The MSID[2:0] signals are provided to indicate the maximum platform capability to the processor. 

2.

2009A processors have thermal requirements that are equivalent to those of the Intel

®

 Core™2 Duo E8000 

processor series. Refer to the appropriate processor Thermal and Mechanical Specifications and Design 

Guidelines for additional information (see 

3.

2009B processors have thermal requirements that are equivalent to those of the Intel

®

 Core™2 Quad 

Q9000 processor series. Refer to the appropriate processor Thermal and Mechanical Specifications and 

Design Guidelines for additional information (see 

).

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 land 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 may be 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. For details, see 

.

Signals are grouped by buffer type and similar characteristics as listed in 

. The 

buffer type indicates which signaling technology and specifications apply to the signals. 
All the differential signals, and selected DDR3 and Control Sideband signals, have On-
Die Termination (ODT) resistors. There are some signals that do not have ODT and 
need to be terminated on the board. 

0

0

0

Reserved

0

0

1

Reserved 

0

1

0

Reserved

0

1

1

Reserved

1

0

0

Reserved

1

0

1

2009A processors supported 

2

1

1

0

2009B processors supported 

3

1

1

1

Reserved