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L9634

ment, OSD turns on the respective high (SQHx) and low side (SQLx) drivers for tDEPLOY. When deploy-

ment is initiated it can not be stopped. Refer to Figure 11 and Figure 12 for a deployment diagram initiated

by an arming signal in serial mode.

Figure 9. Discrete Mode: Deployment Sequence with Pulse Stretch Timer Enabled

Figure 10. Discrete Mode: Deployment Sequence with Pulse Stretch Timer Disabled

t

PULSE

Pulse Stretch Timer

2 ms

or 4ms

Deploy

Valid Deployment Window

SPI CS

Deploy Success Flag

1: SPI Deploy Command

2: Clear Deploy Success Flag

SPI CS Notes:

11

2

t

PULSE

2 ms

or 4ms

t

PULSE

Valid

Deployment

Window

1

12

Valid

Deployment

Window

t < t

PULSE

Valid Deployment Window

t

PULSE

1

3

3: SPI Idle Command

t

PULSE

3

ARMx Status Flag

De-glitch

ARMEN Notes:

A: Arming Enable

B: Arming Disable

DEPEN input is assumed to be active in this sequence.

ARM_CMP

Deploy Status Flag

t

PULSE

t

PULSE

Pulse Stretch Timer

De-glitch

Deploy

SPI CS

Deploy Success Flag

Valid

Deployment

Window

t

PULSE

1

SPI CS Notes:

Valid

Deployment

Window

1

2 ms

or 4ms

t < t

PULSE

1

2

t

PULSE

2 ms

or 4ms

Valid

Deployment

Window

11

2

Valid

Deployment

Window

3

1: SPI Deploy Command

2: Clear Deploy Success Flag

3: SPI Idle Command

3

t < t

PULSE

ARMx Status Flag

DEPEN input is assumed to be active in this sequence.

ARM_CMP

Deploy Status Flag

Obsolete

Product(s)

- Obsolete

Product(s)