Arming Interface; Table 2. Satellite Jumpers; Figure 4. Satellite Jumpers Location - STMicroelectronics MB467 User Manual

UM0178
Table 2.
Name
J14
J5
J6
J7
J8
J54
J55
Figure 4.
J7
J8
J14
J5
J6
J55
J54
4.6

Arming interface

The arming interface is used as a fail-safe to prevent inadvertent airbag deployment. Along with
deployment command, these signals provide redundancy. Pulse stretch timer is provided for
each channel/loop. Either ARM signal or deployment command shall start the pulse stretch
timer.
Arming interface has a dedicated 8-bit SPI interface. The devices can deploy a channel, only
when the deployment enable is asserted and any of the following conditions are satisfied:
the respective deployment command is sent during a valid pulse stretch timer, which
initiated by ARM signal
the respective SPI ARM command is sent during a valid pulse stretch timer, which initiate
by deployment command.
Satellite jumpers
Figure
Figure 4 Interrupt SPI communication for Satellite and Deployment
Figure 4 Enable load simulation for L9658 satellite channel 1 through DICH1
Figure 4 Enable load simulation for L9658 satellite channel 2 through DICH2
Enable load simulation for L9658 satellite/sensor channel 3 through
Figure 4
DICH3
Enable load simulation for L9658 satellite/sensor channel 4 through
Figure 4
DICH4
Figure 4 Enable load simulation for L9654 satellite channel 1 through DICH5
Figure 4 Enable load simulation for L9654 satellite channel 2 through DICH6
Satellite jumpers location
Description
4 Hardware
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