EMC1184 Datasheet, PDF (16/48 Pages) SMSC Corporation – Quad Channel 1°C Temperature Sensor with Beta

Quad Channel 1°C Temperature Sensor with Beta Compensation and 1.8V SMBus Communications
Datasheet
4.2.1
Write Byte
The Write Byte is used to write one byte of data to the registers, as shown in Table 4.2.
SLAVE
START ADDRESS
WR
1 -> 0 YYYY_YYY
0
Table 4.2 Write Byte Protocol
ACK
0
REGISTER
ADDRESS
XXh
ACK
0
REGISTER
DATA
XXh
ACK
0
STOP
0 -> 1
4.2.2
Read Byte
The Read Byte protocol is used to read one byte of data from the registers as shown in Table 4.3.
Table 4.3 Read Byte Protocol
START
1 -> 0
SLAVE
ADDRESS
YYYY_
YYY
WR ACK
00
REGISTER
ADDRESS
XXh
ACK
0
START
1 -> 0
SLAVE
ADDRESS
YYYY_
YYY
RD ACK
10
REGISTER
DATA
XX
NACK STOP
1 0 -> 1
4.2.3
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 4.4.
START
1 -> 0
SLAVE
ADDRESS
YYYY_YYY
Table 4.4 Send Byte Protocol
REGISTER
WR
ACK
ADDRESS
0
0
XXh
ACK
0
STOP
0 -> 1
4.2.4
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 4.5.
START
1 -> 0
SLAVE
ADDRESS
YYYY_YYY
Table 4.5 Receive Byte Protocol
RD
ACK
REGISTER DATA
NACK
1
0
XXh
1
STOP
0 -> 1
Revision 1.0 (07-11-13)
16
DATASHEET
SMSC EMC1184