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EMC1403-1-AIZL-TR 参数 Datasheet PDF下载

EMC1403-1-AIZL-TR图片预览
型号: EMC1403-1-AIZL-TR
PDF下载: 下载PDF文件 查看货源
内容描述: 1°C温度传感器与beta补偿 [1∑C Temperature Sensor with Beta Compensation]
分类和应用: 传感器换能器温度传感器输出元件
文件页数/大小: 42 页 / 732 K
品牌: SMSC [ SMSC CORPORATION ]
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1°C Temperature Sensor with Beta Compensation  
Datasheet  
Chapter 4 System Management Bus Interface Protocol  
4.1  
System Management Bus Interface Protocol  
The EMC1403 and EMC1404 communicate with a host controller, such as an SMSC SIO, through the  
SMBus. The SMBus is a two-wire serial communication protocol between a computer host and its  
peripheral devices. A detailed timing diagram is shown in Figure 4.1.  
.
TLOW  
THIGH  
THD:STA  
TSU:STO  
TRISE  
TFALL  
SMCLK  
TSU:STA  
THD:STA  
THD:DAT  
TSU:DAT  
SMDTA  
TBUF  
S
S
P
P
S - Start Condition  
P - Stop Condition  
Figure 4.1 SMBus Timing Diagram  
The EMC1403 and EMC1404 are SMBus 2.0 compatible and support Send Byte, Read Byte, Write  
Byte, Receive Byte, and the Alert Response Address as valid protocols as shown below.  
All of the below protocols use the convention in Table 4.1.  
Table 4.1 Protocol Format  
DATA SENT  
TO DEVICE  
DATA SENT TO  
THE HOST  
# of bits sent  
# of bits sent  
Attempting to communicate with the EMC1403 and EMC1404 SMBus interface with an invalid slave  
address or invalid protocol will result in no response from the device and will not affect its register  
contents. Stretching of the SMCLK signal is supported, provided other devices on the SMBus control  
the timing.  
4.2  
Write Byte  
The Write Byte is used to write one byte of data to the registers as shown below Table 4.2:  
Table 4.2 Write Byte Protocol  
SLAVE  
ADDRESS  
REGISTER  
ADDRESS  
REGISTER  
DATA  
START  
WR  
ACK  
ACK  
ACK  
STOP  
1
7
1
1
8
1
8
1
1
Revision 1.16 (03-15-07)  
SMSC EMC1403/EMC1404  
DATA1S2HEET  
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