參數(shù)資料
型號: QSMRM
英文描述: QSMRM QSM Queued Serial Module Reference Manual
中文描述: QSMRM QSM排隊串行模塊參考手冊
文件頁數(shù): 91/112頁
文件大小: 1496K
代理商: QSMRM
QSM
REFERENCE MANUAL
USING THE QSPI FOR ANALOG DATA AQUISITION
For More Information On This Product,
Go to: www.freescale.com
MOTOROLA
A-13
**********************************************************************************
**********************************************************************************
*
Example showing use of QSPI to control 3 A/D conversions
*
*
All timing numbers assume system clock frequency of 16.000 MHz
**********************************************************************************
********************************EQUATES*******************************************
**********************************************************************************
*
******
QSPI bit definitions (just what’s needed for this example)
*
CONT
EQU
$80 control RAM structure
BITSE
EQU
$40
DT
EQU
$20
DSCK
EQU
$10
PCS3
EQu
$08
PCS2
EQU
$04
PCS1
EQU
$02
PCS0
EQU
$01
*
REGCSO
EQU
$08 QPDR, QPAR, QDDR
SCK
EQU
$04
MOSI
EQU
$02
MISO
EQU
$01
*
MSTR
EQU
$8000 SPCR0
BITS
EQU
$400
*
SPE
EQU
$8000 SPCR1
DSCKL
EQU
$100
*
WREN
EQU
$4000 SPCR2
ENDQ
EQU
$100
*
SPIF
EQU
$80 SPSR
*
******
QSPI register addresses
*
QPDRW
EQU
$FFFFFC14 QPDR as aligned WORD
SPCR0
EQU
$FFFFFC18 control register 0
SPCR2
EQU
$FFFFFC1C control register 2
SPSR
EQU
$FFFFFC1F QSPI status register
*
******
Control register initialization values
*
* QPDR, QPAR, QDDR
*
INQPDR
EQU
REGCS0 PCS0 default value 1
INQPAR
EQU
REGCS0+SCK+MOSI+MISO pins assigned to QSPI
INQDDR
EQU
REGCS0+SCK+NOSI QSPI output pins
INQPORT
EQU
INQPDR*$100+INQPAR*$100+INQDDR form into a LONG WORD
*
00000080
00000040
00000020
00000010
00000008
00000004
00000002
00000001
00000008
00000004
00000002
00000001
00008000
00000400
00008000
00000100
00004000
00000100
00000080
fffffc14
fffffc18
fffffc1c
fffffc1f
00000008
0000000F
0000000E
00080f0E
Figure A-9 Use of QSPI to Control A/D Conversions - 2 MHz A/D (Sheet 1 of 4)
F
Freescale Semiconductor, Inc.
n
.
相關(guān)PDF資料
PDF描述
QSOP-24 Package MQA24
QST4 Low frequency amplifier
QST9 General purpose amplification (−30V, −1A)
QSX7 General purpose amplification (12V, 1.5A)
QSZ1 General purpose transistor
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
QSMS-0136 制造商:Avago Technologies 功能描述:SCHOTTKY DIODE, PART NUMBER ASSIGNED TO REPLACE HSMS-0005 - Gel-pak, waffle pack, wafer, diced wafer on film
QSMS-2926-TR1G 制造商:Avago Technologies 功能描述:SCHOTTKY DIODE - Tape and Reel
QSMT-AW13-NSUZ1 制造商:Avago Technologies 功能描述:MS AV,1W CWHITE - Tape and Reel
QSMT-FW85-NX000 制造商:Avago Technologies 功能描述:THIS HIGH BRIGHTNESS LED LIGHT SOURCE
QSMT-L060-227NG 制造商:Avago Technologies 功能描述:L2 LED CONTOUR LIGHTING,COLORLESS - Rail/Tube