06XS3517 datasheet(21/41 Pages) FREESCALE

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Analog Integrated Circuit Device Data



Freescale Semiconductor

06XS3517

FUNCTIONAL DEVICE OPERATION

OPERATION MODES

FUNCTIONAL DEVICE OPERATION

OPERATION MODES

SLEEP MODE

The Sleep mode is the default mode of the 06XS3517.

This is the state of the device after first applying battery

voltage (VBAT) and prior to any I/O transitions. This is also the

state of the device when IGN, FOG, FLASHER, and RSTB

are logic [0] (wake=0). In the Sleep mode, the outputs and all

internal circuitry are OFF to minimize current draw. In

addition, all SPI-configurable features of the device are reset.

The 06XS3517 will transit to two modes (Normal and Fail)

depending on wake and fail signals (see Fig13).

The transition to the other modes is according following

signals:

• Wake = IGN or IGN_ON or FLASHER or

FLASHER_ON or RSTB or FOG or FOG_ON

• Fail = VCC fail or SPI fail or External limp

NORMAL MODE

The 06XS3517 is in Normal mode when:

• Wake = 1

• Fail = 0

In Normal operating mode the power outputs are under full

control of the SPI as follows:

• The outputs 1 to 6, including multiphase timing and

selectable slew-rate, are controlled by the

programmable PWM module.

• The outputs 1 to 5 are switched OFF in case of an

under-voltage on VBAT.

• The outputs 1 to 5 are protected by the selectable over-

current double window and over-temperature shutdown

circuit.

• The digital diagnosis feature transfers status of the

smart outputs via SPI.

• The analog current sense output (current recopy

feature) can be routed by SPI.

• The outputs 1 and 5 can be configured to control LED

loads.

• The SPI reports NM=1 in this mode.

The figure below describes the PWM, outputs and over-

current behavior in Normal mode.

FAIL MODE

The 06XS3517 is in Fail mode when:

• Wake = 1

• Fail = 1.

In Fail mode:

• The outputs are under control of external pins (see

Table 6)

• The outputs are fully protected in case of an overload,

over-temperature and under-voltage (on VBAT or on

VCC).

• The SPI reports continuously the content of address 11

(Initialization register), regardless previously requested

output data word.

• Analog current sense is not available.

• Output 2 is configured in Xenon mode.

• In case of an overload (OCHI2 or OCLO) conditions or

under-voltage on VBAT, the outputs are under control

of autorestart feature.

• In case of serious overload condition (OCHI1 or OT) the

corresponding output is latched OFF until a new wake-

up event (wake=0 then 1).

Table 6. Output States During Limp Home

Over-current

Output

D0-D6 bits

D7 bit

Over-current

OUT[1,2]

IGN (external)

IGN_ON

1.4 sec min

Output 1

Parking Light

Output 2

Low Beam

Output 3

High Beam

Output 4

Fog Light

Output 5

Flasher

External Switch

Spare

IGN Pin

OFF

FOG Pin

FLASHER Pin

OFF

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