JG82875 S L8DB Intel, JG82875 S L8DB Datasheet - Page 147

• Manufacturer Part Number: JG82875 S L8DB
• Manufacturer: Intel

Specifications of JG82875 S L8DB

• Mounting: Surface Mount
• Lead Free Status / RoHS Status: Compliant

Table 32. DC Operating Characteristics (Continued)
Intel
HDSWING/
HASWING
SMXRCOMPVOL
SMYRCOMPVOL
SMXRCOMPVOH
SMYRCOMPVOH
SMVREF
Signal Name
®
82875P MCH Datasheet
3
NOTES:
10.Nominal value of CI_VREF is 0.350 V. The specification is at nominal VCC. Note that CI_VREF will vary
12.For AC noise components > 20 MHz, the maximum allowable noise component at the MCH is ±180 mV at
11. Nominal value of CI_SWING is 0.800 V. The specification is at nominal VCC. Note that CI_SWING will vary
3
1. Refer to the appropriate processor datasheet for processor VCC values used to calculate Vsh.
2. HDVREF is generically referred to as GTLREF throughout the rest of this document.
3. SMXRCOMPVOL/SMYRCOMPVOL and SMXRCOMPVOH/SMYRCOMPVOH have maximum input leakage
4. Measured at receiver pad.
5. Standard 50 Ω load to ground.
6. HI_REF and HI_SWING are derived from VCC (nominal VCC = 1.5 V) which is the nominal core voltage for
7. Nominal value of HI_REF is 0.350 V. The specification is at nominal VCC. Note that HI_REF will vary linearly
8. Nominal value of HI_SWING is 0.800 V. The specification is at nominal VCC. Note that HI_SWING will vary
9. CI_REF and CI_SWING are derived from VCC (nominal VCC = 1.5 V) which is the nominal core voltage for
/
/
current of 1 mA.
the MCH. Voltage supply tolerance for a particular interface driver voltage must be within a 5% range of
nominal.
with VCC; thus, VCC variation (± 5%) must be accounted for in the HI_REF specification in addition to the 2%
variation of HI_REF in the table.
linearly with VCC; thus, VCC variation (± 5%) must be accounted for in the HI_SWING specification in
addition to the 2% variation of HI_SWING in the table.
the MCH. Voltage supply tolerance for a particular interface driver voltage must be within a 5% range of
nominal.
linearly with VCC; thus, VCC variation (± 5%) must be accounted for in the CI_VREF specification in addition
to the 2% variation of CI_REF in the table.
linearly with VCC; thus, VCC variation (± 5%) must be accounted for in the CI_SWING specification in
addition to the 2% variation of CI_SWING in the table.
VCC_nom, +180/-105 mV at VCC_min, and +105/-180 mV at VCC_max. For AC noise components
< 20 MHz, the sum of the DC voltage and AC noise component must be within the specified DC minimum/
maximum operating range.
Host Compensation
Reference Voltage
DDR RCOMP VOL
DDR RCOMP VOH
DDR Reference Voltage
Parameter
0.49 x VCC_DDR_min
1/4 x Vtt_min – 2%
(3.112/4.112) – 2%
VCC_DDR_min *
VCC_DDR_min *
(1/4.112) – 2%
Min
0.5 x VCC_DDR
(3.112/4.112)
VCC_DDR *
VCC_DDR *
(1/4.112)
1/4 x Vtt
Nom
Electrical Characteristics
0.51 x VCC_DDR_max
1/4 x Vtt_max + 2%
(3.112/4.112) + 2%
VCC_DDR_max *
VCC_DDR_max *
(1/4.112) + 2%
Max
Unit
147
V
V
V
V