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ھyԇĻ֪R(sh)ͻԭ

2015/2/28 16:49:44c(din)

ĽBھyԇĻ֪R(sh)ͻԭ

1
 
1.1
x 
ICT
ھyԇxICTIn-Circuit Testͨ^(du)ھԪܼ늚BM(jn)Мyԇza(chn)ȱݼԪһN(bio)(zhn)yԇֶҪzھĆ΂(g)ԪԼ·W(wng)j(lu)_·rвѸ١϶λ(zhn)_c(din) 
wICTֻM(jn)oB(ti)Ĝyԇ(yu)c(din)DzAߣ_l(f)r(sh)g̡
 
ᘴʽICTM(jn)ģM͔ܺ(sh)߉݋ܜyԇϸwʸ(du)ÿNΰõᘴAߣAͳ_l(f)L
 1.2 ICT
ķc(din)
 
zƳɰھԪ늚ܺ·W(wng)j(lu)Br܉،(du)衢늸M(jn)Мy(du)OܡOź׃^\(yn)ŴԴģKM(jn)йܜyԇ(du)СҎ(gu)ģļ·M(jn)йܜyԇ74ϵСMemory (q)(dng)QIC
 
ͨ^ֱӌ(du)ھ늚ܵĜyԇl(f)F(xin)칤ˇȱݺԪIJԪəzԪֵijʧЧpģMemoryije(cu)`(du)ˇɰl(f)F(xin)纸a·Ԫe(cu)巴©b_N̓PCB·ྀȹ
 
yԇĹֱӶλھwԪ_W(wng)j(lu)c(din)ϣ϶λ(zhn)_(du)ϵľS޲^I(y)֪R(sh)óƵԄ(dng)yԇyԇѸΰĜyԇr(sh)gһڎʮ롣
 1
3x
 
ھyԇͨa(chn)еһyԇܼr(sh)(yng)a(chn)rڹˇM(jn)ICTھyԇxyԇ^Ĺϰ,϶λ(zhn)S޷ɴa(chn)Чʺ͜pپS޳ɱyԇ(xing)ĿwǬF(xin)a(chn)Ʒ|(zh)CҪyԇֶ֮һ 
 
1.2 xGuarding
 
Ĝyԇᘌ(du)(d)(sh)H·໥B໥ӰʹIxIrefyԇr(sh)횼ԸxGuardingxھyԇĻg(sh) 
 
1.2 ICĜyԇ 
(du)(sh)ICVectoryԇyԇֵy(l)ݔyݔͨ^(sh)H߉݋ܜyԇДĺÉ
 
:cTĜyԇ
 
(du)ģMICĜyԇɸ(j)IC(sh)Hܼ(l)늉y(du)(yng)ݔ(dng)܉Kyԇ 
2

 
SF(xin)켼g(sh)İl(f)չҎ(gu)ģ·ʹyԇ򳣳M(fi)ĕr(sh)g80386Ĝyԇ軨M(fi)һλ쾚ˆTĕr(sh)gSMTĴ(yng)ʹ__·ĹϬF(xin)׃øͻ˸˾yԇg(sh)TeradyneƳMultiScanGenRadƳXpressyԇg(sh)
 2.1 DeltaScan
ģMY(ji)yԇg(sh) 
DeltaScan
Î׺Д(sh)_ͽ^(sh)̖(ho)_еo늷늱o(h)O(du)yĪ(d)_(du)M(jn)кεֱyԇ(dng)ijKԴДκ΃ɂ(g)_ĵЧ·ˆDʾ
 1
ڹ_Aһ(du)صؓ(f)늉Ia^_A֮ƫOܡy^_AIa
 2
ֹ_A늉ڹ_Bһ^ؓ(f)늉Ib^_B֮ƫOڏĹ_A͹_Bӵ֮ͬƬ(ni)Ia(hu)p
 3
ٴΜy^_AIa(dng)늉ӵ_Br(sh)IadeltatһBӆ} 
DeltaScan
ܛCϏԓSܵĹ_(du)õĜyԇY(ji)Ķó_Ĺ\ࡣ̖(ho)_Դͽӵع_ƬcDeltaScanyԇ@ζ_Ó_֮⣬DeltaScanҲԙzyȱʧ巴Ó_
 GenRad
ʽĜyԇQJunction XpressͬIC(ni)ĶOֻǜyԇͨ^yOܵlVԣC팍(sh)F(xin)
 DeltaScan
g(sh)踽ӊAӲɞƼg(sh)
 2.2 FrameScan
źϜyԇ 
FrameScan
ź̽y_Ó_ÿ(g)һ(g)̽^ij(g)_(l)̖(ho)̽^ʰȡ̖(ho)Dʾ
 1
AϵĶ·_P(gun)xij(g)ϵ̽^
 2
yԇx(ni)ģMyԇ壨ATBÿ(g)y_l(f)̖(ho)
 3
̽^ɼ_y_ϵĽ̖(ho)
 4 ATB
y̽^ʰȡĽ̖(ho)ij(g)_c·B_͕(hu)y̖(ho)ԓ_Ó_t(hu)̖(ho)
 GenRad
ʽļg(sh)QOpen Xpressԭ
 
˼g(sh)AҪӲyԇɱԸ 
3 Boundary-Scan
߅輼g(sh)
 ICT
yԇxҪÿһ(g)·(ji)c(din)һ(g)yԇc(din)SɶߣԽԽ(qing)bԽԽСSMTԪӰʹPCBԪܶȵҪÿһ(g)(ji)c(din)һ̽׃úyӜyԇc(din)ʹM(fi)ͬr(sh)_l(f)һ(g)܏(qing)Ĝyԇ׃y_l(f)L“(lin)ϜyԇMJTAGCIEEE1149.1yԇ(bio)(zhn) 
IEEE1149.1
xһ(g)Ďׂ(g)Ҫȶx˽MɜyԇL˿ڣTAPģ塳(g)_TDITDOTCKTMSTRSTyԇʽxTMSÁdϢζxTAPֵ֧Ď׷NͬyԇģʽҪyԇEXTEST(ni)yԇINTEST\(yn)МyԇRUNTEST߅ZԣBoundary Scan Description
Language
BSDLZҪϢx_ݔݔpͣxTAPģʽָ
 
߅ÿ(g)_һ(g)λĴSSRĆԪQԪԪBһ(gu)һ(g)λĴÁƺ͙zy_ضĂ(g)_Áɜyԇ΄(w)
 
(g)Ēͨ^TAPBһγһ(g)Bm(x)߅Ĵ朣^TAP̖(ho)Ϳɿƺ͙zycBĹ_@ӵ̓M|ᘴAߌ(du)ÿ(g)_|̓ML挍(sh)HLȥռPCBgĜyԇPpPCB͊AߵM(fi)
 
һNyԇڌ(du)PCBM(jn)пɜyO(sh)Ӌ(j)r(sh)ÌTܛ·W(wng)c(din);ߒ蹦ܵQЧطޔ(sh)Ĝyԇc(din)ֲp͜yԇw(jng)(j)Ĝpٜyԇc(din)͜yԇ
 
߅輼g(sh)Q˟oӜyԇc(din)yҪṩһNζҿݵخa(chn)yԇDεķܛ߿ԌBSDLļD(zhun)QɜyԇDTeradyneVictoryGenRadBasic ScanScan Path FinderQ(f)syԇy
 
TAPL߀Ɍ(sh)F(xin)(du)CPLDFPGAFlash Memroyھ̣In-System ProgramOn Board Program
 4 Nand-Tree
 Nand-Tree
Inter˾l(f)һNɜyO(sh)Ӌ(j)g(sh)˾a(chn)ƷF(xin)ֻl(f)F(xin)82371оƬ(ni)O(sh)Ӌ(j)O(sh)Ӌ(j)Y(ji)(gu)һһ*.TR2ļ҂ɌļD(zhun)Qɜyԇ 
ICT
yԇҪ϶λ(zhn)yԇ(wn)c·PCBO(sh)Ӌ(j)кܴP(gun)ϵԭt҂Ҫÿһ(g)·W(wng)j(lu)c(din)Мyԇc(din)·O(sh)Ӌ(j)Ҫ(g)ĠB(ti)M(jn)иxɻӰ(du)߅Nand-TreeO(sh)Ӌ(j)ҪbɜyҪ