6402 datasheet(51/250 Pages) INTEL

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Intel® 6400/6402 Advanced Memory Buffer Datasheet

Electrical, Power, and Thermal

4.4.12

Reference DDR2 Interface Package Trace Lengths

The following reference package trace lengths have been incorporated into the Advance

Memory Buffer timings in Table 4-9.

4.5

SMBUS Interface

Note:

Based on High-power SMBus DC Specification

4.6

Miscellaneous I/O (1.5 Volt CMOS Driver)

4.7

Thermal Diode and Analog to Digital Converter

(ADC)

A thermal diode with an analog to digital converter (ADC) is required. The thermal

sensor will be used to ensure prevention of catastrophic failure.

Table 4-9.

Advance Memory Buffer DDR2 Package Lengths

Signal Group

Min Length

Max Length

Units

CLK/CLK

Command/Address

CKE, CS#

ODT

DQS/DQS/DQ

Table 4-10. Recommended Operating Conditions for SMBUS Interface

Symbol

Parameter

Min

Typ

Max

Unit

Comments

VDDSPD

Supply voltage (SMBUS)

3.0

3.3

3.6

3.3v +10%

VIL

SMBus signal input low voltage

0.8

VIH

SMBus signal input high voltage

2.1

VDDSPD

VOL

SMBus signal output low voltage

0.4

@IPULLUP

ILEAK-BUS

Input Leakage per bus segment

+200

µA

ILEAK-PIN

Input Leakage per device pin

+10

µA

IPULLUP

Current sinking, VOL = 0.4V

CBUS

Capacitive load per bus segment

400

Capacitance for SMBDAT or

SMBCLK pin

VNOISE

Signal noise immunity from

10MHz to 100MHz

300

mV p-p

This is AC item applies to

the high-power DC

specification only

Table 4-11. Recommended Operating Conditions for RESET and BFUNC Pins

Symbol

Parameter

Min

Typ

Max

Unit

Comments

VIH(dc)

DC HIGH-level input voltage

1.0

VIL(dc)

DC LOW-level input voltage

0.5

ILEAK

Input leakage

+ 90

µA

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