ISL51002 datasheet(31/32 Pages) INTERSIL

31 / 32 page

December 22, 2006

FIGURE 7. CONFIGURATION REGISTER READ

ISL51002 Serial Bus Address Write

This is the 7-bit address of the ISL51002 on the 2-wire bus. The

address is 0x98 if pin 67 is low, 0x9A if pin 67 is high. R/W = 0,

indicating next transaction will be a write.

(PIN 67)

R/W

ISL51002 Register Address Write

This sets the initial address of the ISL51002’s configuration

ISL51002 SERIAL BUS ADDRESS

START COMMAND

Signals the beginning of serial I/O

ISL51002 Serial Bus Address Write

This is the 7-bit address of the ISL51002 on the 2-wire bus. The

address is 0x98 if pin 67 is low, 0x9A if pin 67 is high. R/W = 1,

indicating next transaction(s) will be a read.

ISL51002 Register Data Read(s)

This is the data read from the ISL51002’s configuration register.

Note: The ISL51002’s Configuration Register’s address pointer

auto increments after each data read: repeat this step to read

multiple sequential bytes of data from the Configuration Register.

(PIN 67)

R/W

ISL51002 SERIAL BUS

START COMMAND

STOP COMMAND

(REPEAT IF DESIRED)

Ends the previous transaction and starts a new one

Signals the ending of serial I/O

DATA

READ*

SDA BUS

SIGNALS

FROM THE

ISL51002

SIGNALS

FROM THE

HOST

ADDRESS

SERIAL BUS

ADDRESS

aaaaaaaa

dddddddd

100110 A 0

* The data read step may be repeated to read

from the ISL51002’s Configuration Register

sequentially, beginning at the Register

Address written in the two steps previous.

SERIAL BUS

ADDRESS

100110 A 1

ISL51002

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