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參數(shù)資料

型號：	MC68332VFV20
廠商：	MOTOROLA INC
元件分類：	微控制器/微處理器
英文描述：	32-Bit Modular Microcontroller
中文描述：	32-BIT, 20 MHz, MICROCONTROLLER, PQFP144
封裝：	QFP-144
文件頁數(shù)：	67/88頁
文件大小：	446K
代理商：	MC68332VFV20

MC68332

MC68332TS/D

MOTOROLA

The system software must stop each submodule before asserting STOP to avoid complications at re-

start and to avoid data corruption. The SCI submodule receiver and transmitter should be disabled, and

the operation should be verified for completion before asserting STOP. The QSPI submodule should be

stopped by asserting the HALT bit in SPCR3 and by asserting STOP after the HALTA flag is set.

FRZ1 — Freeze 1

0 = Ignore the FREEZE signal on the IMB

1 = Halt the QSPI (on a transfer boundary)

FRZ1 determines what action is taken by the QSPI when the FREEZE signal of the IMB is asserted.

FREEZE is asserted whenever the CPU enters the background mode.

FRZ0 — Freeze 0

Reserved

Bits [12:8] — Not Implemented

SUPV — Supervisor/Unrestricted

0 = User access

1 = Supervisor access

SUPV defines the assignable QSM registers as either supervisor-only data space or unrestricted data

space.

IARB — Interrupt Arbitration Identification Number

The IARB field is used to arbitrate between simultaneous interrupt requests of the same priority. Each

module that can generate interrupt requests must be assigned a unique, non-zero IARB field value. Re-

fer to

3.8 Interrupts

for more information.

QTEST

— QSM Test Register

QTEST is used during factory testing of the QSM. Accesses to QTEST must be made while the MCU

is in test mode.

$YFFC02

QILR determines the priority level of interrupts requested by the QSM and the vector used when an in-

terrupt is acknowledged.

ILQSPI — Interrupt Level for QSPI

ILQSPI determines the priority of QSPI interrupts. This field must be given a value between $0 (inter-

rupts disabled) to $7 (highest priority).

ILSCI — Interrupt Level of SCI

ILSCI determines the priority of SCI interrupts. This field must be given a value between $0 (interrupts

disabled) to $7 (highest priority).

If ILQSPI and ILSCI are the same nonzero value, and both submodules simultaneously request inter-

rupt service, QSPI has priority.

QILR

— QSM Interrupt Levels Register

$YFFC04

ILQSPI

ILSCI

QIVR

RESET:

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