www.德州仪器.com
TMS470R1A128
16/32-bitriscflashmicrocontrollers
SPNS098–JANUARY2005
table2.terminalfunctions(持续)
终端
内部的
类型
(1)(2)
pullup/描述
管脚
名字
PULLDOWN
(3)
号码
serialperipheralinterface1(spi1)
spi1clk5spi1clock.spi1clkcanbeprogrammedasagiopin.
spi1ena1spi1chipenable.spi1enacanbeprogrammedasagiopin.
spi1scs2spi1slavechipselect.spi1scscanbeprogrammedasagiopin.
3.3-vi/oipd
spi1simo3spi1datastream.slavein/masterout.spi1simocanbeprogrammedas
agiopin.
spi1somi4spi1datastream.slaveout/masterin.spi1somicanbeprogrammedas
agiopin.
serialperipheralinterface2(spi2)
spi2clk41spi2clock.spi2clkcanbeprogrammedasagiopin.
spi2ena44spi2chipenable.spi2enacanbeprogrammedasagiopin.
spi2scs45spi2slavechipselect.spi2scscanbeprogrammedasagiopin.
3.3-vi/oipd
spi2simo42spi2datastream.slavein/masterout.spi2simocanbeprogrammedas
agiopin.
spi2somi43spi2datastream.slaveout/masterin.spi2somicanbeprogrammedas
agiopin.
零-pinphase-lockedloop(zpll)
oscin81.8-vicrystalconnectionpinorexternalclockinput
oscout71.8-voexternalcrystalconnectionpin
使能/disablethezpll.thezpllcanbebypassedandtheoscillator
becomesthesystemclock.ifnotinbypassmode,tirecommendsthat
plldis513.3-viipd
PLLDISbeconnectedtogroundorpulleddowntogroundbyanexternal
电阻.
serialcommunicationsinterface1(sci1)
sci1clk613.3-vi/oipdsci1clock.sci1clkcanbeprogrammedasagiopin.
sci1rx633.3-vi/oipusci1datareceive.sci1rxcanbeprogrammedasagiopin.
sci1tx623.3-vi/oipusci1datatransmit.sci1txcanbeprogrammedasagiopin.
serialcommunicationsinterface2(sci2)
sci2rx323.3-vi/oipusci2datareceive.sci2rxcanbeprogrammedasagiopin.
sci2tx333.3-vi/oipusci2datatransmit.sci2txcanbeprogrammedasagiopin.
systemmodule(sys)
bidirectionalpin.clkoutcanbeprogrammedasagiopinorthe
clkout583.3-vi/oipd
outputofsysclk,iclk,ormclk.
inputmasterchippower-upreset.externalv
CC
monitorcircuitrymust
porrst213.3-viipd
assertapower-onreset.
bidirectionalreset.theinternalcircuitrycanassertareset,andan
externalsystemresetcanassertadevicereset.
onrst,theoutputbufferisimplementedasanopendrain(driveslow
rst103.3-vi/oipu
仅有的).
toensureanexternalresetisnotarbitrarilygenerated,tirecommends
thatanexternalpullupresistorbeconnectedtorst.
看门狗/real-timeinterrupt(wd/rti)
analogwatchdogreset.theawdpinprovidesasystemresetifthewd
keyisnotwrittenintimebythesystem,providinganexternalrc
networkcircuitisconnected.iftheuserisnotusingawd,tirec-
ommendsthatAWDbeconnectedtogroundorpulleddowntogroundby
anexternalresistor.
awd503.3-vi/oipd
formoredetailsontheexternalrcnetworkcircuit,seethe
TMS470R1x
SystemModuleReferenceGuide
(literaturenumberspnu189)andthe
applicationnote
analogwatchdogresistor,capacitoranddischarge
IntervalSelectionConstraints
(literaturenumberspna005).
9
: 点此下载
