L9658 datasheet(35/64 Pages) STMICROELECTRONICS

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L9658

Functional description

Doc ID 14219 Rev 3

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Odd parity check includes all 16 bits. “Don’t care” bit is included in the parity check as well.

Bit D7 to bit D0 are used to start the deployment or the pulse stretch timer. L9658 provides

an independent timer for each channel. When any of these bits are set to ‘1,’ device starts

the deployment or the pulse stretch timer for the respective channels.

If any of these bits are set to ‘0’ when the pulse stretch timer is still active, the pulse stretch

timer for the respective channels is terminated. Once deployment is initiated, can not be

terminated.

During a deployment, any commands directed to the channel that are in deployment are

ignored.

4.11.4

Deployment driver diagnostic mode

Diagnostic mode message are defined as shown here below.

Channel 5 Idle (default)

Deploy Channel 5

Channel 4 Idle (default)

Deploy Channel 4

Channel 3 Idle (default)

Deploy Channel 3

Channel 2 Idle (default)

Deploy Channel 2

Channel 1 Idle (default)

Deploy Channel 1

Channel 0 Idle (default)

Deploy Channel 0

Table 18.

MOSI command mode message definition (continued)

Bit

State

Description

Table 19.

MOSI diagnostic mode message definition

Bit

State

Description

D15

Mode Bits

D14

D13

Odd Parity

D12

Read Diagnostic Mode Response (default)

Write Diagnostic Mode Command

D11

MOS Diagnostic Disable (default)

MOS Diagnostic Enable

D10

LS MOS Diagnostic Enable

HS MOS Diagnostic Enable

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