33894 datasheet(23/28 Pages) FREESCALE

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Analog Integrated Circuit Device Data

Freescale Semiconductor

33894

FUNCTIONAL DEVICE OPERATION

LOGIC COMMANDS AND REGISTERS

PREVIOUS ADDRESS SOA4:SOA0=A1A0000

Bits OD3:OD0 reflect the current state of the Fault register

(FLTR) corresponding to the output previously selected with

the bits A1A0 (Table 16).

Note The FS pin reports all faults. For latched faults, this

pin is reset by a new Switch ON command (via SPI or direct

input IN).

PREVIOUS ADDRESS SOA4:SOA0=X0001

Data in bits OD3:OD0 contains IN3_SPI:IN0_SPI

programmed bits for outputs HS3:HS0, respectively.

PREVIOUS ADDRESS SOA4:SOA0=X1001

Data in bits OD3:OD0 contains the programmed

CSNS3 EN:CSNS0 EN bits for outputs HS3:HS0,

respectively.

PREVIOUS ADDRESS SOA4:SOA0=A1A0010

Data returned in bits OD3:OD0 are programmed current

values for the overcurrent high detection level (refer to

Table 11, page 21) and the overcurrent low detection level

(refer to Table 10, page 21), corresponding to the output

previously selected with A1A0.

PREVIOUS ADDRESS SOA4:SOA0=A1A0011

The returned data contains the programmed values in the

CDTOLR register for the output selected with A1A0.

PREVIOUS ADDRESS SOA4:SOA0=A1A0100

The returned data contains the programmed values in the

DICR register for the output selected with A1A0.

PREVIOUS ADDRESS SOA4:SOA0=X0101

The returned data contains the programmed values in the

UOVR register.

PREVIOUS ADDRESS SOA4:SOA0=X1101

The returned data contains the programmed values in the

WDR register. Bit OD2 (WDTO) reflects the status of the

watchdog circuitry. If WDTO bit is logic [1], the watchdog has

timed out and the device is in Fail-Safe mode. IF WDTO is

logic [0], the device is in Normal mode (assuming the device

is powered and not in the Sleep mode), with the watchdog

either enabled or disabled.

PREVIOUS ADDRESS SOA4:SOA0=X0110

The returned data OD3 and OD2 contain the state of the

outputs HS2 and HS0, respectively, in case of Fail-Safe

state. This information is stated with the external resistance

placed at the FSI pin. OD1 indicates if the watchdog is

enabled or not. OD0 returns the state of the WAKE pin.

PREVIOUS ADDRESS SOA4:SOA0=X1110

The returned data OD3:OD0 reflects the state of the direct

pins IN3:IN0, respectively.

Table 15. Serial Output Bit Map Description

Previous STATR

SO Returned Data

OD9

OD8

OD7

OD6

OD5

OD4

OD3

OD2

OD1

OD0

A1 A0 0

WDIN

UVF

OVF

SOA4 SOA3 SOA2 SOA1 SOA0

ST3

ST2

ST1

ST0

OTF_s

OCHF_s

OCLF_s

OLF_s

WDIN

UVF

OVF

SOA4 SOA3 SOA2 SOA1 SOA0

ST3

ST2

ST1

ST0

IN3_SPI

IN2_SPI

IN1_SPI

IN0_SPI

WDIN

UVF

OVF

SOA4 SOA3 SOA2 SOA1 SOA0

ST3

ST2

ST1

ST0

CSNS3 EN

CSNS2 EN

CSNS1 EN

CSNS0 EN

A1 A0 0

WDIN

UVF

OVF

SOA4 SOA3 SOA2 SOA1 SOA0

ST3

ST2

ST1

ST0

SOCH_s

SOCL2_s

SOCL1_s

SOCL0_s

A1 A0 0

WDIN

UVF

OVF

SOA4 SOA3 SOA2 SOA1 SOA0

ST3

ST2

ST1

ST0

OL_DIS_s

OCL_DIS_s

OCLT1_s

OCLT0_s

A1 A0 1

WDIN

UVF

OVF

SOA4 SOA3 SOA2 SOA1 SOA0

ST3

ST2

ST1

ST0

Fast_SR_s

CSNS_high_s

DIR_DIS_s

A/O_s

WDIN

UVF

OVF

SOA4 SOA3 SOA2 SOA1 SOA0

ST3

ST2

ST1

ST0

–

UV_DIS

OV_DIS

WDIN

UVF

OVF

SOA4 SOA3 SOA2 SOA1 SOA0

ST3

ST2

ST1

ST0

–

WDTO

WD1

WD0

WDIN

UVF

OVF

SOA4 SOA3 SOA2 SOA1 SOA0

ST3

ST2

ST1

ST0

HS2_failsaf

HS0_failsaf

WD_en

WAKE

WDIN

UVF

OVF

SOA4 SOA3 SOA2 SOA1 SOA0

ST3

ST2

ST1

ST0

IN3

IN2

IN1

IN0

x=Don’t care.

s=Output selection with the bits A1A0 as defined in Table 9, page 20.

Table 16. Output-Specific Fault Register

OD3

OD2

OD1

OD0

OTF_s

OCHF_s

OCLF_s

OLF_s

s=Selection of the output.

33894 Datasheet(PDF) 23 Page - Freescale Semiconductor, Inc

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