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L9965TS データシート(PDF) 27 Page - STMicroelectronics

部品番号 L9965TS
部品情報  Automotive SPI to isolated SPI transceiver
PDF  62 Pages
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メーカー  STMICROELECTRONICS [STMicroelectronics]
ホームページ  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L9965TS データシート(HTML) 27 Page - STMicroelectronics

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Parameter
Description
CPHA
1
5.7.1.2
SPI frame composition
The frame format to send read/write commands to L9965T/TS is shown in the table below.
Table 25. Single Read/Write frame format
DEV_ID
Address
Data write
CRC
DEV_ID
Address feedback
Data read
CRC
The fields of the MOSI/MISO frames are described in Table 26:
Table 26. SPI frame fields description
Field
Size [bit]
Description
Value
P.A.
1
Data direction
0 = Answer from device
1 = Command from MCU
R/W
1
Read/Write request
0 = Read
1 = Write
Compressed
1
Compressed data type
0 = normal frame
1 = decompressed data from a
compressed burst
DEV_ID
6
Address of the device object of the
communication. Also used for broadcast
commands.
[0-63]
Address
Address feedback
7
Register address for the Read/Write operation.
Also used for burst commands.
[0-127]
RSVD
1
Reserved
0
FAULT
1
Self-detected failure
1= failure in diagnostic routines
0= no failures
DATA WRITE
18
Specifies the register content to be written in
Write operations. Don’t care in Read operations
Read: X
Write: [0 to 218-1]
DATA READ
18
Returns the register content in both Read/Write
operations
[0 to 218-1]
CRC
6
Checksum
[0-63]
The fault/events bits contributing to the SPI MISO frame FAULT bit and FLT interrupt pin are reported in the below
table. Each fault condition is described in detail in the related paragraph.
L9965T/L9965TS
Functional description
DS14987 - Rev 1
page 27/62



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