33903 datasheet(70/104 Pages) FREESCALE

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Analog Integrated Circuit Device Data

Freescale Semiconductor

33903/4/5

SERIAL PERIPHERAL INTERFACE

DETAIL OF CONTROL BITS AND REGISTER MAPPING

Crank - Select the VSUP/1 threshold to disable VDD, while VSUP1 is falling toward GND

VDD disable when VSUP/1 is below typically 4.0 V (parameter VSUP-TH1), and device in Reset Mode

VDD kept ON when VSUP/1 is below typically 4.0 V (parameter VSUP_TH1)

Table 17. Initialization LIN and I/O Registers, INIT LIN I/O (note: register can be written only in INIT Mode)

MOSI First Byte [15-8]

[b_15 b_14] 0_0111 [P/N]

MOSI Second Byte, bits 7-0

bit 7

bit 6

bit 5

bit 4

bit 3

bit 2

bit 1

bit 0

01 00 _ 111 P

I/O-1 ovoff

LIN_T2[1]

LIN_T2[0]

LIN_T/1[1]

LIN_T/1[0]

I/O-1 out-en

I/O-0 out-en

Cyc_Inv

Default state

Condition for default

POR

Bit

Description

I/O-1 ovoff - Select the deactivation of I/O-1 when VDD or VAUX over-voltage condition is detected

Disable I/O-1 turn off.

Enable I/O-1 turn off, when VDD or VAUX over-voltage condition is detected.

b6, b5

LIN_T2[1], LIN_T2[0] - Select pin operation as LIN Master pin switch or I/O

pin is OFF

pin operation as LIN Master pin switch

pin operation as I/O: HS switch and Wake-Up input

N/A

b4, b3

LIN_T/1[1], LIN_T/1[0] - Select pin operation as LIN Master pin switch or I/O

pin is OFF

pin operation as LIN Master pin switch

pin operation as I/O: HS switch and Wake-Up input

N/A

I/O-1 out-en- Select the operation of the I/O-1 as output driver (HS, LS)

Disable HS and LS drivers of pin I/O-1. I/O-1 can only be used as input.

Enable HS and LS drivers of pin I/O-1. Pin can be used as input and output driver.

I/O-0 out-en - Select the operation of the I/O-0 as output driver (HS, LS)

Disable HS and LS drivers of I/O-0 can only be used as input.

Enable HS and LS drivers of the I/O-0 pin. Pin can be used as input and output drivers.

Cyc_Inv - Select I/O-0 operation in device LP Mode, when cyclic sense is selected

During cyclic sense active time, I/O is set to the same state prior to entering in to LP Mode. During cyclic sense off time, I/O-0 is disable (HS and

LS drivers OFF).

During cyclic sense active time, I/O is set to the same state prior to entering in to LP Mode. During cyclic sense off time, the opposite driver of I/

O_0 is actively set. Example: If I/0_0 HS is ON during active time, then I/O_O LS is turned ON at expiration of the active time, for the duration of

the cyclic sense period.

Bit

Description

33903 Datasheet(PDF) 70 Page - Freescale Semiconductor, Inc

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