908E626 datasheet(21/38 Pages) FREESCALE

21 / 38 page

Analog Integrated Circuit Device Data

Freescale Semiconductor

908E626

FUNCTIONAL DEVICE OPERATION

LOGIC COMMANDS AND REGISTERS

Table 3. List of Registers

Slave Status Byte

Contains the contents of the System Status Register ($0c)

independent of whether it is a write or read operation or which

Slave Data Byte

Contains the contents of selected register. During a write

operation it includes the register content prior to a write

operation.

SPI Register Overview

Table 3 summarizes the SPI Register addresses and the

bit names of each register.

ANALOG DIE I/OS

LIN Physical Layer

The LIN bus terminal provides a physical layer for single-

wire communication in automotive applications. The LIN

physical layer is designed to meet the LIN physical layer

specification.

The LIN driver is a low-side MOSFET with internal current

limitation and thermal shutdown. An internal pullup resistor

with a serial diode structure is integrated, so no external

pullup components are required for the application in a slave

node. The fall time from dominant to recessive and the rise

time from recessive to dominant is controlled. The symmetry

between both slew rate controls is guaranteed.

The LIN terminal offers high susceptibility immunity level

from external disturbance, guaranteeing communication

during external disturbance.

The LIN transmitter circuitry is enabled by setting the

PSON bit in the System Control Register (SYSCTL). If the

transmitter works in the current limitation region, the LINCL

bit in the System Status Register (SYSSTAT) is set. Due to

excessive power dissipation in the transmitter, software is

advised to monitor this bit and turn the transmitter off

immediately.

Addr

R/W

Bit

76543210

$01

H-Bridge Output

(HBOUT)

HB4_H

HB4_L

HB3_H

HB3_L

HB2_H

HB2_L

HB1_H

HB1_L

$02

H-Bridge Control

(HBCTL)

OFC_EN

CSA

000

CLS2

CLS1

CLS0

$03

System Control

(SYSCTL)

PSON

SRS1

SRS0

0000

$04

Interrupt Mask

(IMR)

LINIE

HTIE

LVIE

HVIE

OCIE

$05

Interrupt Flag

(IFR)

LINF

HTF

LVF

HVF

OCF

$06

Reset Mask

(RMR)

TTEST

00000

HVRE

HTRE

$07

Analog Multiplexer

Configuration (ADMUX)

0000

SS3

SS2

SS1

SS0

$08

Reserved

00000

000

$09

Reserved

00000000

$0a

AWD Control

(AWDCTL)

000

AWDRE

AWDF

AWDR

AWDRST

$0b

Power Output

(POUT)

0000

HVDDON

$0c

System Status

(SYSSTAT)

LINCL

HVDD_OCF

LVF

HVF

HB_OCF

HTF

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