參數(shù)資料
型號: G781
廠商: Electronic Theatre Controls, Inc.
元件分類: 溫度/濕度傳感器
英文描述: 【1∑C Remote and Local Temperature Sensor with SMBus Serial Interface
中文描述: 【1ΣC遠程和本地溫度傳感器,帶有SMBus串行接口
文件頁數(shù): 8/14頁
文件大?。?/td> 342K
代理商: G781
Ver: 1.0
Oct 02, 2002
TEL: 886-3-5788833
http://www.gmt.com.tw
8
Global Mixed-mode Technology Inc.
G781
Write Byte Format
S
Slave Address:
equivalent to chip- select line of a 3-wire interface
Command Byte:
selects which register you are writing to
Data byte:
data goes into the register set by the command byte (to set thresholds, configuration masks, and sam
pling rate)
ADDRESS
7 bits
WR
ACK
COMMAND
8 bits
ACK
DATA
8 bits
ACK
P
1
Read Byte Format
S
ADDRESS WR
7 bits
Slave Address:
equivalent to chip- select line
Command Byte:
selects which register you are reading from
Slave Address:
repeated due to change in data-flow direction
Data byte:
reads from the register set by the command byte
ACK
COMMAND
8bits
ACK
S
ADDRESS RD
7bits
ACK
DATA
8 bits
///
P
Send Byte Format
S
Command Byte:
sends command with no data , usually used for one-shot command
ADDRESS
7 bits
WR
ACK
COMMAND
8 bits
ACK
P
Receive Byte Format
S
Data Byte:
reads data from the register commanded by the last Read Byte or Write Byte transmission; also used
for SMBus Alert Response return address
S = Start condition Shaded = Slave transmission P = Stop condition /// = Not acknowledged
ADDRESS
7 bits
RD
ACK
DATA
8 bits
///
P
Figure 3. SMBus Protocols
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