33989 datasheet(32/66 Pages) FREESCALE

tên linh kiện	33989

Giải thích chi tiết về linh kiện	System Basis Chip with High-Speed CAN Transceiver

PDF	66 Pages

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Analog Integrated Circuit Device Data

Freescale Semiconductor

33989

FUNCTIONAL DEVICE OPERATION

LOGIC COMMANDS AND REGISTERS

Reset Control Register (RCR)

Table 12 provides Reset Control Register data while

Table 13 outlines the RCR Control Bits, and Table 14

provides RCR Status Bits data.

CAN Register (CAN)

Table 15 provides control of the high-speed CAN module,

mode, slew rate, and wake-up.

Table 12. RCR Register

RCR

$001B

WDSTOP

NOSTOP

SAFE

RSTTH

Reset Value

Reset Condition

POR,RST,

STO2NR

POR, NR2N NR2STB

POR

Table 13. RCR Control Bits

SAFE

WD Pin

Reset Pin

Condition

0 = > 1

Device Power-Up

V1 Normal, WD Properly Triggered

V1 Drops Below RSTTH

WD Timeout

Table 14. RCR Status Bits

Status Bits

Bit Value

Description

WDSTOP

No Watchdog in Stop Mode

Watchdog Runs in Stop Mode

NOSTOP

Device Cannot Enter Sleep Mode

Sleep Mode Allowed, Device Can Enter Sleep Mode

RSTTH

Reset Threshold 1 Selected (typ 4.6 V)

Reset Threshold 2 Selected (typ 4.2 V)

Table 15. CAN Register

CAN

$010B

—

SC1

SC0

MODE

CANWU

TXF

CUR

THERM

Reset Value

—

Reset Condition

—

POR

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