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L9654 датащи(PDF) 41 Page - STMicroelectronics

номер детали L9654
подробное описание детали  Quad squib driver and dual sensor interface ASIC for safety application
PDF  59 Pages
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производитель  STMICROELECTRONICS [STMicroelectronics]
домашняя страница  http://www.st.com
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L9654 датащи(HTML) 41 Page - STMicroelectronics

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L9654
Functional description
58
4.12.1
Deployment driver command mode response
Command Mode response is defined as shown here after.
Table 26. MISO command mode response definition
Bit
State
Description
D15
0
Mode bits
D14
1
D13
-
Don’t Care
D12
0
DEPEN Negated
1
DEPEN Asserted
D11
0
Don’t Care
D10
0
Don’t Care
D9
0
ARM23 Negated
1
ARM23 Asserted
D8
0
ARM01 Negated
1
ARM01 Asserted
D7
-
Don’t Care
D6
-
Don’t Care
D5
-
Don’t Care
D4
-
Don’t Care
D3
-
SPI Deploy Command Status: Channel 3
D2
-
SPI Deploy Command Status: Channel 2
D1
-
SPI Deploy Command Status: Channel 1
D0
-
SPI Deploy Command Status: Channel 0
DEPEN status flag (bit D12) indicates the state of DEPEN pin.
ARM status flag (bit D11 through bit D8) indicates the state of the respective arming signal,
including the pulse stretch timer. If the pulse stretch timer is initiated by a deployment
command, it shall not assert the arming status flag. This flag is negated as soon as the de-
glitch timer is expired. ARM status flag is an OR-function of arming states from two
channels.
SPI deploy command status flag indicates the SPI deployment status for the respective
channel. These flags reflect bit D3 through bit D0 of the most recent SPI command mode
message.
These bits do not include the status of pulse stretch timer. These bits are overwritten by the
most recent SPI command mode message.



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