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1、主板CPU北桥南桥IO信号总表-(很重要,维修必备)很重要很实用的基本信号4A J#^&N:C Z-r;I6j%&ICPU信号1z!k2o9q$z/F'].k5{-l+I#C$d8F(^'t#H1e;a0i&L%@*h5l&m(
2、'V9W名称信号说明 M c6`;X2]5S8C!?;^#L#i3Y0L"J0j(a2j5M0S9O9Z)`)2M5?4M7F/B&~4{,L-d1t2q8
3、(b电压VCORE、VTT_GMCH、VCCPLL .?-h"M9x)o%u#{-{$~)`3K,d5c)p$X#b6Q2e*E"N
4、8G2A.W4vVTT_OR、VTT_OL由CPU发出,用于信号上拉)w:]%h(V-h#I4o;f!V+N;`8t1M-q5/C.A2
5、#R+L%'o8d9t"h0m(M8A)~5D*j8C#n&G7h!m*n4Y+]0H&x0p$f1D(z)Z4g1_%d&c1
6、%H(a&A(f参考电压GTLREF[3:0]、GTLREF_MCH 1o%?&p3F(O1D%^0?('V4Z'k/d-~"Y-E4O#y$K3o1D2t(@0H#c$
7、9J4[;F&O7v*e+t.Z5x+K0X.CPU时钟BCLK[1:0](CPUC
8、LK、CPUCLK#)到CLK芯片*Z'},f#K&t3C8S6E"y+x'u1;f5[.C;[7@,o4l9a)b-1x%
9、7M S'e"T2m*T)p3^7n+_(p8Q&}9J:X0S4x9Y6C!o3Q,L2Q5K*O复位信号CPURST#北桥到CPU"z"Y8Z6z2};H7Z-~-q&E1K-W*Z*h+q6`*Y%d9CSYS_RST#(系统复位)由面板开关到CPU、时钟、南桥&Y3}&k1w5H7C6}9}'P;E7Z7g3B&j0F f.o*c3q5F7U&a*?/n2E6b+?0?7Y.P+I8H3
10、]2x+E%j3a#B6l e'P7G*{#j;^-G:~频率选择FSBSEL[2:0]到北桥9e4n%g'i*Z+h7~)g8h*j-X$p)[7j+s*C&[ v5o9A"g)Z1
11、 M#?2W7{$q0l8w4I4q$L,Z:I$e&S!M6w j电源好信号CPUPWROK南桥到CPU"m$w;a3F,u"[&A*[8[ E6o#H'X%k(]3g2v,[5_'C)e G4W0{;z"@定义CPU电压信号VID[7:0]发到IO、CPU的PWM芯片#S&d.c:J4z'r.H9Y&h9i"F0}6c/
12、+V1
13、F,B+q*~6h.p0a4{6[&O!?8
14、6]6B+E"r+C!d9y2Z-w"S5m.}/m(G%[&p(_7V0l({)V温度信号PROCHOT#、THERMTRIP#南桥到CPU1t3{7v!Z o&l-q$G9E,o!?7`/w+g6p8n0_4p'P%i5R/}.?)G4Q6g3s)M2F9U3x8y%h*F:H*l,L;^1U6X7M,U4C!l$T:A8I!t8`0D2?*q'
15、*V温度信号CPU_TEMP到IO/r6w/G+K E;f&N"l6G3[$h6_'P/ R-X%j.~8U!U1?-d9{/
16、
17、)
18、.P'O O W3j8u9U+A!O4['w,o)}#k%V9@3o:_/s%A:K直接到南桥A20M#、FERR#、IGNNE#、INIT#、LINT[1:0]、SMI#、STPCLK# 4O#K-W%a#
19、%@'O5b)W)e+k-o q:_*P8k:]!c:I4g!~2]4_,{9h3D$k%Q(k6j.?8~7m:M8z'R;K9?6_'J-B"N:U"N;k2E;R&x6f$r8u*L%]"i-Q!w.S地址总线A[35:3]#到北桥6F&
20、.B;q(J$Y$r)a!i*J"j$B m-r3[,[7T4
21、})f)z$a'x.@,u+?(j3c4r*q数据总线D[63:0]#到北桥:_(U*w5i'N4o#C7R0y'a%Q9}"J;R$Q#C/U#x%S0
22、,Y-C4R2r(r9l3i7a(G"Y控制总线REQ[4:0]#、ADSTB[1:0]、RS[2:0]、ADS#、BNR#、HIT#、BPRI#、DBSY#、DRDY#、HITM#、LOCK#、TRDY#、DEFER#、BR0#、DBI[3:0]、DSTBN[3:0]、DSTBP[3:0]#、到北桥&M7N6@)b!S#d8x-P;T4y(c3w8w:l'Z1^+j;^7
23、J/A)X){8q*w,g$^;H-F$s;[0W1U;d*U.J3!Q*G)~5k/s4l(`2t(_7Q)N*
24、0r9j:q1]*~2V8R-Q0O!(}.l#P3H%e6?'%b"Z+c$k4E4^,z+Q3N&L5r;Y3Z*?(`.m$T7a)Q![3v;)