參數(shù)資料
型號(hào)： MC68332TS
廠商： Motorola, Inc.
英文描述： 32-Bit Modular Microcontroller
中文描述： 32位微控制器模塊
文件頁(yè)數(shù)： 72/88頁(yè)
文件大?。?/td> 446K
代理商： MC68332TS
MOTOROLA
72
MC68332
MC68332TS/D
6.5.2 QSPI Registers
The programmer's model for the QSPI submodule consists of the QSM global and pin control registers,
four QSPI control registers, one status register, and the 80-byte QSPI RAM.
The CPU can read and write to registers and RAM. The four control registers must be initialized before
the QSPI is enabled to ensure defined operation. SPCR1 should be written last because it contains
QSPI enable bit SPE. Asserting this bit starts the QSPI. The QSPI control registers are reset to a de-
fined state and can then be changed by the CPU. Reset values are shown below each register.
Refer to the following memory map of the QSPI.
Writing a different value into any control register except SPCR2 while the QSPI is enabled disrupts op-
eration. SPCR2 is buffered to prevent disruption of the current serial transfer. After completion of the
current serial transfer, the new SPCR2 values become effective.
Writing the same value into any control register except SPCR2 while the QSPI is enabled has no effect
on QSPI operation. Rewriting NEWQP in SPCR2 causes execution to restart at the designated location.
SPCR0 contains parameters for configuring the QSPI before it is enabled. The CPU can read and write
this register. The QSM has read-only access.
Pin Names
Mnemonics
MISO
Mode
Master
Slave
Master
Slave
Master
Slave
Master
Master
Master
Slave
Function
Master In Slave Out
Serial Data Input to QSPI
Serial Data Output from QSPI
Serial Data Output from QSPI
Serial Data Input to QSPI
Clock Output from QSPI
Clock Input to QSPI
Select Peripherals
Selects Peripheral
Causes Mode Fault
Initiates Serial Transfer
Master Out Slave In
MOSI
Serial Clock
SCK
Peripheral Chip Selects
Peripheral Chip Select
Slave Select
PCS[3:1]
PCS0
SS
Address
$YFFC18
$YFFC1A
$YFFC1C
$YFFC1E
$YFFC1F
$YFFD00
$YFFD20
$YFFD40
Name
SPCR0
SPCR1
SPCR2
SPCR3
SPSR
RAM
RAM
RAM
Usage
QSPI Control Register 0
QSPI Control Register 1
QSPI Control Register 2
QSPI Control Register 3
QSPI Status Register
QSPI Receive Data (16 Words)
QSPI Transmit Data (16 Words)
QSPI Command Control (8 Words)
SPCR0
— QSPI Control Register 0
$YFFC18
15
14
13
10
9
8
7
0
MSTR
WOMQ
BITS
CPOL
CPHA
SPBR
RESET:
0
0
0
0
0
0
0
1
0
0
0
0
0
1
0
0
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