9DBV0641AKILFT datasheet(11/17 Pages) IDT

Part #	9DBV0641AKILFT

Description	6 O/P 1.8V PCIe Gen1-2-3 ZDB/FOB

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Manufacturer	IDT [Integrated Device Technology]

Direct Link	http://www.idt.com

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REVISION D 04/28/16

11

6 O/P 1.8V PCIE GEN1-2-3 ZDB/FOB W/ZO=100OHMS

9DBV0641 DATASHEET

General SMBus Serial Interface Information

How to Write

• Controller (host) sends a start bit

• Controller (host) sends the write address

• IDT clock will acknowledge

• Controller (host) sends the beginning byte location = N

• IDT clock will acknowledge

• Controller (host) sends the byte count = X

• IDT clock will acknowledge

• Controller (host) starts sending Byte N through Byte

N+X-1

• IDT clock will acknowledge each byte one at a time

• Controller (host) sends a Stop bit

Note: Read/Write address is latched on SADR pin.

How to Read

• Controller (host) will send a start bit

• Controller (host) sends the write address

• IDT clock will acknowledge

• Controller (host) sends the beginning byte location = N

• IDT clock will acknowledge

• Controller (host) will send a separate start bit

• Controller (host) sends the read address

• IDT clock will acknowledge

• IDT clock will send the data byte count = X

• IDT clock sends Byte N+X-1

• IDT clock sends Byte 0 through Byte X (if X(H) was

written to Byte 8)

• Controller (host) will need to acknowledge each byte

• Controller (host) will send a not acknowledge bit

• Controller (host) will send a stop bit

Index Block Write Operation

Controller (Host)

IDT (Slave/Receiver)

TstarT bit

Slave Address

WR

WRite

ACK

Beginning Byte = N

ACK

Data Byte Count = X

ACK

Beginning Byte N

ACK

O

Byte N + X - 1

ACK

PstoP bit

Index Block Read Operation

Controller (Host)

IDT

T

starT bit

Slave Address

WR

WRite

ACK

Beginning Byte = N

ACK

RT

Repeat starT

Slave Address

RD

ReaD

ACK

Data Byte Count=X

ACK

Beginning Byte N

ACK

O

Byte N + X - 1

N

Not acknowledge

PstoP bit

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9DBV0641AKILFT Datasheet(PDF) 11 Page - Integrated Device Technology

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