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L9396 データシート(PDF) 45 Page - STMicroelectronics

部品番号 L9396
部品情報  Automotive multiple power supply IC
PDF  109 Pages
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メーカー  STMICROELECTRONICS [STMicroelectronics]
ホームページ  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L9396 データシート(HTML) 45 Page - STMicroelectronics

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DS12539 Rev 6
45/109
L9396
Remote sensor interface
108
Figure 9. Wheel speed sensor protocol types
GADG2001170743PS
Three levels current
(VDA compliant sensor
with Manchester encoded
information)
Three levels current
(Standard compliant sensor
with only speed information
information)
Two levels current PWM
(One pulse per tooth with data
encoded in pulse width)
Two levels current PWM
(Two pulses per tooth with data
and diagnostic encoded
in pulse width)
WSx pin
WSx pin
WSx pin
Data and diagnostic by SPI: Three level sensors have eight data bits and a parity bit which are written into the register upon
receiving At higher speeds not all bits can be transmitted. The data register for each wheel contains the number of data bits
received between two speed pulses.
Data by WSx pin (Pass-through model)
Data by WSx pin and Duty cycle info by SPI
(Normal mode)
WSx pin
Data by WSx pin and Duty cycle info by SPI
(Normal mode)
(Pass-through model)
(Pass-through model)
high
db0
ITHopen
ITH1
ITH2
db1 db2 db3 db4 db5 db6 db7 p
high
high
low
highhighhighhigh
low
28mA
ITH1
14mA
7mA
45μs
45μs
n x 45μs
45μs
90μs
90μs
ITH1
14mA
7mA
ITH1
14mA
7mA
7mA



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