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L9965T Fiches technique(PDF) 35 Page - STMicroelectronics

No de pièce L9965T
Description  Automotive SPI to isolated SPI transceiver
PDF  62 Pages
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Fabricant  STMICROELECTRONICS [STMicroelectronics]
Site Internet  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L9965T Fiches technique(HTML) 35 Page - STMicroelectronics

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Device
VIF_ID
SPI MOSI DEV_ID
READ CMD Behavior
WRITE CMD Behavior
!=0
!=0 (matching
BROADCAST_SEL_<x>)
Discard cmd and load MISO with SPI ERROR
FRAME with WRONG_VIF_ID=1
Set COMM_ERR_SPI.SPI_VIF_ID_ERR
Perform WRITE operation and
load MISO with updated reg
content. Propagate cmd on VIF
5.8.2
Communication with L9965T/TS and L9965x
The BMS MCU can access the L9965T/TS transceiver or any BMS device in the chain with proper SPI frames.
The flow chart of the process is shown in Figure 12 and explained in detail in the paragraphs below.
Figure 12. Single read/write frame protocol
L9965T/L9965TS
Functional description
DS14987 - Rev 1
page 35/62



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