EMC2102-DZK SMSC, EMC2102-DZK Datasheet - Page 16

• Manufacturer Part Number: EMC2102-DZK
• Description: Industrial Temperature Sensors RPM Fan Contrllr
• Manufacturer: SMSC

Specifications of EMC2102-DZK

• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

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Revision 2.02 (05-17-07)
4.2
4.3
4.4
4.5
START
1
START
START
START
1
1
1
ADDRESS
SLAVE
7
The Read Byte protocol is used to read one byte of data from the registers as shown in
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
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
The ALERT# output can be used as a processor interrupt or as an SMBALERT.
When it detects that the SMBALERT pin is asserted, the host will send the Alert Response Address
(general address of 000_1100b) on the bus. All devices with active interrupts will respond with their
client address as shown in
Read Byte
Send Byte
Receive Byte
Alert Response Address
RESPONSE
ADDRESS
ADDRESS
ADDRESS
SLAVE
SLAVE
ALERT
W
R
1
7
7
7
ACK
1
Table 4.6 Alert Response Address Protocol
Register
Address
8
Table 4.5 Receive Byte Protocol
WR
RD
Table
Table 4.3 Read Byte Protocol
Table 4.4 Send Byte Protocol
1
1
RD
1
4.6.
Table
ACK
DATASHEET
1
4.5.
START
ACK
ACK
ACK
16
1
1
1
1
Address
Slave
RPM-Based Fan Controller with HW Thermal Shutdown
REGISTER DATA
7
REGISTER
ADDRESS
ADDRESS
DEVICE
8
8
8
RD
1
ACK
1
Table
Register
NACK
NACK
Data
ACK
8
1
1
1
4.4.
SMSC EMC2102
NACK
1
Table
STOP
STOP
STOP
Datasheet
1
1
1
STOP
4.3.
1