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L9662 Datasheet(PDF) 60 Page - STMicroelectronics

Part # L9662
Description  Octal squib driver and quad Manchester/PSI5 encoded sensor
PDF  80 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L9662 Datasheet(HTML) 60 Page - STMicroelectronics

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Functional description
L9662
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DocID028325 Rev 1
Figure 15. Example of Manchester decoding using satellite protocol
Communication protocols
In order to support the various satellite sensors, the device supports two different
communication standards (MS and PSI5 Mode). The Manchester standard consists of two
protocols (CRC / Even Parity), while the PSI5 standard consists of one protocol (Even
Parity) for a total of three communication protocols. The three protocols which are described
in this section are: 1) Protocol A - CRC. 2) Protocol B Generic – Parity: to support Bosch
PAS3 and PAS4 sensors. 3) Protocol C: PSI5 – Parity: support for various sensors. Bit D3 of
the MCR configures the device for either MS or PSI5 communication standard. Bits D10 to
D13 in the MCR register are used to configure the specific device channel (Ch. 0,1,2,3) to
use any of these specified protocols.
This version of the device supports the following PSI5 Operational Modes.
PSI5-A8P-250/1L
PSI5-A10P-250/1L
PSI5-P10P-250/1L
PSI5-P10P-500/2L



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