EMC2113 datasheet(20/85 Pages) SMSC

20 / 85 page

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

Datasheet

Revision 1.2 (10-08-09)

SMSC EMC2113

DATASHEET

5.2.4

Receive Byte

The Receive Byte protocol is used to read data from a register when the internal register address

pointer is known to be at the right location (e.g. set via Send Byte). This is used for consecutive reads

of the same register as shown in Table 5.6.

5.2.5

Block Write

The Block Write is used to write multiple data bytes to a group of contiguous registers as shown in

Table 5.7. It is an extension of the Write Byte Protocol.

5.2.6

Block Read

The Block Read is used to read multiple data bytes from a group of contiguous registers as shown in

Table 5.8. It is an extension of the Read Byte Protocol.

Table 5.6 Receive Byte Protocol

START

SLAVE

ADDRESS

ACK

NACK

STOP

1 -> 0

YYYY_YYY

XXh

0 -> 1

Table 5.7 Block Write Protocol

START

SLAVE

ADDRESS

ACK

ADDRESS

ACK

DATA

ACK

1 ->0

YYYY_YYY

XXh

DATA

ACK

DATA

ACK

. . .

DATA

ACK

STOP

XXh

. . .

XXh

0 -> 1

Table 5.8 Block Read Protocol

START

SLAVE

ADDRESS

ACK

ADDRESS

ACK

START

SLAVE

ADDRESS

ACK

DATA

1->0

YYYY_YYY

XXh

1 ->0

YYYY_YYY

XXh

ACK

DATA

ACK

DATA

ACK

DATA

ACK

. . .

DATA

NACK

STOP

XXh

. . .

XXh

0 -> 1

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