EMC2303-1-KP-TR Standard Microsystems (SMSC), EMC2303-1-KP-TR Datasheet - Page 14

• Manufacturer Part Number: EMC2303-1-KP-TR
• Manufacturer: Standard Microsystems (SMSC)

Specifications of EMC2303-1-KP-TR

• Operating Supply Voltage (typ): 3.3V
• Operating Supply Voltage (min): 3V
• Operating Supply Voltage (max): 3.6V
• Operating Temp Range: -40C to 125C
• Operating Temperature Classification: Automotive
• Mounting: Surface Mount
• Pin Count: 12
• Lead Free Status / RoHS Status: Compliant

START
Revision 1.2 (03-22-10)
1 -> 0
3.2
3.2.1
3.2.2
3.2.3
START
1 -> 0
START
1 -> 0
YYYY_YYYb
ADDRESS
SLAVE
YYYY_YYYb
5. The Block Read and Block Write protocols are only compliant with I
The EMC2303 is SMBus 2.0 compatible and supports Send Byte, Read Byte, Receive Byte and Write
Byte as valid protocols as shown below. It will respond to the Alert Response Address protocol but is
not in full compliance.
All of the below protocols use the convention in
of YYYY_YYYb should be replaced with the respective SMBus addresses.
Write Byte
The Write Byte is used to write one byte of data to the registers as shown below
ADDRESS
Read Byte
The Read Byte protocol is used to read one byte of data from the registers as shown in
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
SMBus Protocols
SLAVE
not support SMBus formatting for Block Read and Block Write protocols.
YYYY_YYYb
ADDRESS
WR
SLAVE
0
ACK
0
WR
0
Register
Address
XXh
# of bits sent
DATA SENT
ACK
WR
TO DEVICE
Table 3.3 Write Byte Protocol
Table 3.4 Read Byte Protocol
Table 3.5 Send Byte Protocol
0
0
Table 3.2 Protocol Format
ACK
DATASHEET
0
REGISTER
ADDRESS
START
0 -> 1
XXh
ACK
14
0
DATA SENT TO
# of bits sent
THE HOST
Table
YYYY_YYYb
Address
Multiple RPM-Based PWM Fan Controller for Three Fans
Slave
3.2. When reading the protocol blocks, the value
ACK
REGISTER
ADDRESS
0
XXh
RD
1
REGISTER
DATA
XXh
ACK
0
2
C data formatting. They do
Table
Register
ACK
Data
XXh
0
3.5.
Table
ACK
0
SMSC EMC2303
3.3.
NACK
Table
1
STOP
0 -> 1
Datasheet
0 -> 1
STOP
3.4.
STOP
0 -> 1