EMC2113 datasheet(19/88 Pages) MICROCHIP

Part #	EMC2113

Description	RPM-Based Fan Controller with Multiple Temperature Zones & Hardware Thermal Shutdown

PDF	88 Pages

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Manufacturer	MICROCHIP [Microchip Technology]

Direct Link	http://www.microchip.com

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RPM-Based Fan Controller with Multiple Temperature Zones & Hardware Thermal Shutdown

Datasheet

 2013 Microchip Technology Inc.

DS20005251A-page 19

5.2.1

Write Byte

The Write Byte is used to write one byte of data to the registers as shown below Table 5.3.

5.2.2

Read Byte

The Read Byte protocol is used to read one byte of data from the registers as shown in Table 5.4.

5.2.3

Send Byte

The Send Byte protocol is used to set the internal address register pointer to the correct address

location. No data is transferred during the Send Byte protocol as shown in Table 5.5.

Table 5.2 Protocol Format

DATA SENT

TO DEVICE

DATA SENT TO

THE HOST

# of bits sent

Table 5.3 Write Byte Protocol

START

SLAVE

ADDRESS

ACK

ADDRESS

ACK

DATA

ACK

STOP

1 -> 0

YYYY_YYY

0 -> 1

XXh

0 -> 1

Table 5.4 Read Byte Protocol

START

SLAVE

ADDRESS

ACK

ADDRESS

ACK

START

SLAVE

ADDRESS

ACK

DATA

NACK

STOP

1 -> 0

YYYY_YYY

XXh

1 -> 0

YYYY_YYY

XXh

0 -> 1

Table 5.5 Send Byte Protocol

START

SLAVE

ADDRESS

ACK

ADDRESS

ACK

STOP

1 -> 0

YYYY_YYY

XXh

0 -> 1

EMC2113 Datasheet(PDF) 19 Page - Microchip Technology

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