EMC2101-ACZT-TR SMSC, EMC2101-ACZT-TR Datasheet - Page 16

• Manufacturer Part Number: EMC2101-ACZT-TR
• Description: Industrial Temperature Sensors Sngl Fan Contrllr
• Manufacturer: SMSC

Specifications of EMC2101-ACZT-TR

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

Revision 2.54 (06-16-09)
4.3
4.4
4.5
4.6
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 / TACH output can be used as a processor interrupt or as an SMBus Alert when configured
to operate as an interrupt.
When it detects that the ALERT / TACH pin is asserted, the host will send the Alert Response Address
(ARA) to the general address of 000_1100b. 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
WR
SLAVE
SLAVE
ALERT
1
7
7
7
ACK
1
Table 4.6 Alert Response Address Protocol
Register
Address
8
Table 4.5 Receive Byte Protocol
WR
Table
RD
Table 4.3 Read Byte Protocol
Table 4.4 Send Byte Protocol
1
1
RD
1
4.6.
Table
ACK
DATASHEET
1
4.5.
ACK
ACK
START
ACK
16
1
1
1
1
SMBus Fan Control with 1°C Accurate Temperature Monitoring
Address
Slave
REGISTER DATA
7
REGISTER
ADDRESS
ADDRESS
DEVICE
RD
8
8
1
8
ACK
1
Register
Table
NACK
Data
NACK
ACK
8
1
1
1
4.4.
SMSC EMC2101
NACK
1
Table
STOP
STOP
STOP
Datasheet
1
1
1
STOP
4.3.
1