9DBL0853ANDGI datasheet(16/32 Pages) RENESAS

16 / 32 page

December 9, 2022

9DBL02x3/9DBL04x3/ 9DBL06x3/9DBL08x3 Datasheet

General SMBus Serial Interface Information

How to Write

▪ Controller (host) sends a start bit

▪ Controller (host) sends the write address

▪ Renesas clock will acknowledge

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

▪ Renesas clock will acknowledge

▪ Controller (host) sends the byte count = X

▪ Renesas clock will acknowledge

▪ Controller (host) starts sending Byte N through Byte N+X-1

▪ Renesas clock will acknowledge each byte one at a time

▪ Controller (host) sends a stop bit

How to Read

▪ Controller (host) will send a start bit

▪ Controller (host) sends the write address

▪ Renesas clock will acknowledge

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

▪ Renesas clock will acknowledge

▪ Controller (host) will send a separate start bit

▪ Controller (host) sends the read address

▪ Renesas clock will acknowledge

▪ Renesas clock will send the data byte count = X

▪ Renesas clock sends Byte N+X-1

▪ Renesas 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)

Renesas (Slave/Receiver)

starT bit

Slave Address

WRite

ACK

Beginning Byte = N

ACK

Data Byte Count = X

ACK

Beginning Byte N

ACK

Byte N + X - 1

ACK

stoP bit

Index Block Read Operation

Controller (Host)

Renesas

starT bit

Slave Address

WRite

ACK

Beginning Byte = N

ACK

Repeat starT

Slave Address

ReaD

ACK

Data Byte Count=X

ACK

Beginning Byte N

ACK

Byte N + X - 1

Not acknowledge

stoP bit

9DBL0853ANDGI Datasheet(PDF) 16 Page - Renesas Technology Corp

9DBL0853ANDGI Datasheet(HTML) 16 Page - Renesas Technology Corp

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