ADT7411 Datasheet, PDF (32/36 Pages) Analog Devices – SPI/I2C Compatible, 10-Bit Digital Temperature Sensor and 8-Channel ADC

ADT7411
CS
1
8
1
8
SCLK
D_IN
D_OUT
D7 D6 D5 D4 D3 D2 D1 D0
X
X
X
X
X
X
X
X
X
START
X
X
X
X
READ COMMAND
X
X
D7 D6 D5 D4 D3 D2 D1
DATA BYTE 1
Figure 39. SPI—Reading a Single Byte of Data from a Selected Register
X
D0
STOP
CS
1
8
1
8
SCLK
D_IN
D7 D6 D5 D4 D3 D2 D1 D0 X
X
X
X
X
X
X
X
D_OUT
X
X
START
X
X
X
X
READ COMMAND
X
X
D7 D6 D5 D4 D3 D2 D1 D0
DATA BYTE 1
CS (CONTINUED)
1
8
SCLK (CONTINUED)
D_IN (CONTINUED)
X
X
X
X
X
X
X
X
D_OUT (CONTINUED)
D7 D6 D5 D4 D3 D2 D1
DATA BYTE 2
Figure 40. SPI—-Reading Two Bytes of Data from Two Sequential Registers
D0
STOP
CS
SPI
READ OPERATION
WRITE OPERATION
Figure 41. SPI—Correct Use of ^CS during SPI Communications
The INT/INT output can operate as an SMBALERT function.
Slave devices on the SMBus can normally not signal to the
master that they want to talk, but the SMBALERT function
allows them to do so. SMBALERT is used in conjunction with
the SMBus general call address.
One or more INT/INT outputs can be connected to a common
SMBALERT line connected to the master. When the
SMBALERT line is pulled low by one of the devices, the
following procedure occurs, as shown in Figure 42.
Rev. A | Page 32 of 36