ISL22329 View Datasheet(PDF) - Intersil

Part Name

Description

Manufacturer

ISL22329

Dual Digitally Controlled Potentiometers (XDCP™)

Intersil 

ISL22329

SCL FROM

MASTER

1

SDA OUTPUT FROM

TRANSMITTER

8

9

HIGH IMPEDANCE

SDA OUTPUT FROM

RECEIVER

HIGH IMPEDANCE

START

ACK

FIGURE 13. ACKNOWLEDGE RESPONSE FROM RECEIVER

SIGNALS FROM

THE MASTER

WRITE

S

T

A

R

T

IDENTIFICATION

BYTE

ADDRESS

BYTE

S

DATA

T

BYTE

O

P

SIGNAL AT SDA

1 0 1 0 A2 A1 A0 0 0 0 0 0

SIGNALS FROM

THE SLAVE

A

A

A

C

C

C

K

K

K

FIGURE 14. BYTE WRITE SEQUENCE

S

S

SIGNALS T

T

FROM THE A IDENTIFICATION

A IDENTIFICATION

A

MASTER R

T

BYTE WITH

R/W=0

ADDRESS

BYTE

R BYTE WITH

T

R/W = 1

C

K

SIGNAL AT SDA 1 0 1 0 A2 A1 A0 0 0 0 0 0

A

SIGNALS FROM

C

THE SLAVE

K

1 0 1 0 A2 A1 A0 1

A

A

C

C FIRST READ

K

K DATA BYTE

FIGURE 15. READ SEQUENCE

A

C

K

S

AT

CO

KP

LAST READ

DATA BYTE

11

FN6330.2

September 4, 2009

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