Analog Integrated Circuit Device Data

Freescale Semiconductor

25

33797

FUNCTIONAL DEVICE OPERATION

OPERATIONAL MODES

Hex

Code

Command

Description

Command Programming Input and Diagnostic Data Out (Available on Next Command) (22)

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

XX

Programming

Command for

FEN 2 Counter

1=ON

FEN2 CNT

BIT 7

MS

FEN2 CNT

BIT 6

FEN2 CNT

BIT 5

FEN2 CNT

BIT 4

FEN2 CNT

BIT 3

FEN2 CNT

BIT 2

FEN2 CNT

BIT 1

FEN2 CNT

BIT 0

LS

Response DATA

OUT

FEN 2 Counter

Programming

Status

FEN2 CNT

BIT 7

MS

FEN2 CNT

BIT 6

FEN2 CNT

BIT 5

FEN2 CNT

BIT 4

FEN2 CNT

BIT 3

FEN2 CNT

BIT 2

FEN2 CNT

BIT 1

FEN2 CNT

BIT 0

LS

82

Unlock to Test

High-Squib Drivers

1A, 1B, 2A, 2B

1

0

0

0

0

0

1

0

Response DATA

Output: Command

Echoed

1

0

0

0

0

0

1

0

1X

High-Side Driver

Transistor Test

Command

0

0

0

1

SQB_ 2B

High-Side

Driver “ON”

SQB_ 2A

High-Side

Driver “ON”

SQB_1B

High-Side

Driver “ON”

SQB_1A

High-Side

Driver “ON”

Response DATA

OUT

High-Side Driver

Transistor Status

0

0

0

0

SQB_2B

HSDSTAT_2B

SQB_2A

HSDSTAT_2A

SQB_1B

HSDSTAT_1B

SQB_1A

HSDSTAT_1A

83

Unlock to Test Low

Squib Drivers 1A,

1B, 2A, and 2B

1

0

0

0

0

0

1

1

Response Data

Output: Command

Echoed

1

0

0

0

0

0

1

1

2X

Low-Side Driver

Transistor Test

Command

0

0

1

0

SQB_ 2B

Low-Side

Driver “ON”

SQB_2A

Low-Side

Driver “ON”

SQB_1B

Low-Side

Driver “ON”

SQB_1A

Low-Side

Driver “ON”

Response DATA

OUT Low-Side

Driver Transistor

0

0

0

0

SQB_2B

LSDSTAT_ 2B

SQB_2A

LSDSTAT_ 2A

SQB_1B

LSDSTAT_1B

SQB_1A

LSDSTAT_1A

Notes

22

The second byte for command programming will be treated as a NOP if any FET is firing. The programming commands have to be

sequential or they will be treated as a NOP.

Table 8. Command Programming and Diagnostic Bit Definitions (continued)