Datasheet, Volume 1
59
Electrical Specifications
Notes:
1.
Refer to
for details on the R
ON
(Buffer on Resistance) value for this signal.
7.3
Power-On Configuration (POC) Options
Several configuration options can be configured by hardware. The processor samples
its hardware configuration at reset, on the active-to-inactive transition of RESET_N, or
upon assertion of PWRGOOD (inactive-to-active transition). For specifics on these
options, refer to
The sampled information configures the processor for subsequent operation. These
configuration options cannot be changed except by another reset transition of the
latching signal (RESET_N or PWRGOOD).
Notes:
1.
BIST_ENABLE is sampled at RESET_N de-assertion.
2.
This signal is sampled at PWRGOOD assertion.
Power/Other Signals
Power / Ground
VCC, VTTA, VTTD, VCCD_01, VCCD_23,VCCPLL, VSA
and VSS
Sense Points
VCC_SENSE
VSS_VCC_SENSE
VSS_VTTD_SENSE
VTTD_SENSE
VSA_SENSE
VSS_VSA_SENSE
Notes:
1.
Refer to
Chapter 6, "Signal Descriptions,"
for signal description details.
2.
DDR{0/1/2/3} refers to DDR3 Channel 0, DDR3 Channel 1, DDR3 Channel 2, and DDR3 Channel 3.
3.
ECC DIMMs are not supported on the processor; thus, these signals are not used.
Table 7-6.
Signals with On-Die Termination
Signal Name
Pull Up /Pull
Down
Rail
Value
Units
Notes
BCLK_SELECT[1:0]
Pull up
VTT
2K
Ohm
BIST_ENABLE
Pull Up
VTT
2K
Ohm
EAR_N
Pull Up
VTT
2K
Ohm
1
Table 7-5.
Signal Groups (Sheet 3 of 3)
Differential/Single
Ended
Buffer Type
Signals
1
Table 7-7.
Power-On Configuration Option Lands
Configuration Option
Land Name
Notes
BCLK input select
BCLK_SELECT[1:0]
Execute BIST (Built-In Self Test)
BIST_ENABLE
1
Power-up Sequence Halt for ITP configuration
EAR_N
2
Содержание BX80619I73960X
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