Schematic Diagrams

C - 4 CPU (Northwood) 2 of 2 (71-888E0-D04) - For 888E

888E Schematic Diags
CPU (Northwood) 2 of 2
VCORE
VCORE
VCORE
VCORE
VCORE
VCORE
VCORE
1.25V
VCC3S
VCORE
1.25V
VCC3S
VCC3S
VCC3S
VCC3S
IERR#
THERMTRIP#
CPUPWRGD
PROCHOT#
BR0#
TMS
TCK
TDI
TRST#
HCPURST#
NMI
HCPURST#
HLOCK#
BNR#
TDI
PROCHOT#
SMI#
BSEL0
HSTPCLK#
RSP#
ADS#
VCCIOPLL IERR#
HDBI3#
HDBI1#
DBR#
INTR
BR0#
HIT#HDBI0#
COMP_0
BINIT#
HITM#
TMS
THERMDC
INIT#
TDO
IGNNE#
A20M#
COMP_1
MCERR#
HTRDY#
BPRI#
THERMDA
HDBI2#
DEFER#
TCK
TRST#
CPUSLP#
HDRDY#
CPUPWRGD
BSEL1
H_FERR#
DBSY#
THERMTRIP#
TDO
DBR#
VID_VCC
FERR#
TP_DBA_ITP
ATF_INT#
OS#
THERMDA
THERMDC
VSSA
VCCCA
R766 55_1%12
R767 55_1%12
Q23
3904
B
E
C
R290
470
R308
300
Q24
3904
B
E
C
R312
56
R286 470
R287 1_1%
T155
R259 33(R)
R784 0(R)
R783 0
R785 0(R)
R786 0(R)
R787 0(R)
R788 0
L55 L(0805)1 2
L50 L(0805)(R)1 2
C381
220P_X7R
12
C383
220P_X7R
12
C382
1U_0805_X7R
12
R271
100_1%
12
C428
220P_X7R
12
C427
220P_X7R
12
C426
1U_0805_X7R
12
R293
100_1%
12
L51 4.7UH(0805)1 2
R272 51.1_1%12
+
CP7 10U(1206)1 2
+
CP6 10U(1206)1 2
R270 49.9_1%1 2
R292 49.9_1%1 2
R313 10K12
R309 56_1%12
R268 300_1%12
R302 56_1%12
L53
4.7UH(0805)
1 2
R305 51_1%12
R295 27.4_1%12
R300 68012
R344 51_1%12
R304 3912
R296 15012
C448 0.1U
1 2
R284 10K(R)
U33
TC1066
15
12
14
6
10
1
5
9
13
16
2
3
4
11
7
8
STBY#
SMBDATA
SMBCLK
ADD1
ADD0
NC/CRIT1
NC/CRIT0
NC/OS#
NC
NC
VCC
DXP
DXN
ALERT#
GND
GND
R321 10K 0805(R)
C444
2200P
R319
4.7K
R320 200
R317
4.7K
R316 8.2K
R289 R12
R298 51.1_1%12
R299 200
R343 200
R301 200
R314
4.7K(R)
R310 200
R311 200
R291 200
R348 200
R297 200
R303 200
R294 200
T162
T161
T150
T158
T152
T148
T151
T156
T159
R759
10K
T149
T153
T147
T146
R329 7512
R347 15012
U34B
NORTHWOOD478
AC1
V5
A5
AC26
AD26
AE25
L5
R5
P1
E5
D1
F6
F20
AA6
AA21
W23
P23
J23
F21
W22
R22
K22
E22
AF23
AF22
AC3
V6
B6
Y4
AA3
W5
AB2
H5
H2
J6
G1
G4
H6
G2
F3
E3
D2
E2
D4
C1
F7
E6
D5
B3
C4
A2
C3
B2
B5
C6
AB26
AB23
AB25
A4
V21
P26
G25
E21
C25
C5
C7
C9
D10
D12
D14
D16
D18
D20
D21
D24
D3
D6
D8
AE23
AD20
AD22
K24
K3
K6
L1
L23
L26
L4
M2
M22
M25
M5
N21
N24
N3
N6
P2
P22
P25
P5
E13
E15
E17
E19
E23
E26
E4
E7
E9
F10
F12
F14
F16
F18
F2
F22
F25
F5
J2
J22
J25
J5
K21
R1
R23
T6
U2
U22
U25
U5
V1
V23
V26
V4
W21
W24
W3
W6
Y2
Y22
Y25
Y5
G6
R26
E11
E1
F8
G21
G24
T3
T24
T21
G3
R4
AD6
AD5
L24
AF4
C22
A22
A7
AD2
AD3
AE21
AF3
AF24
AF25
B1
AP0
AP1
VCC_SENSE
ITP_CLK0
ITP_CLK1
DBRESET
ADSTB0
ADSTB1
COMP1
LINT1
LINT0
GTLREF3
GTLREF2
GTLREF1
GTLREF0
STBP3
STBP2
STBP1
STBP0
STBN3
STBN2
STBN1
STBN0
BCLK1
BCLK0
IERR
MCERR
FERR
STPCLK
BINIT
INIT
RSP
DBSY
DRDY
TRDY
ADS
LOCK
BR0
BNR
HIT
HITM
BPRI
DEFER
TCK
TDI
TMS
TRST
TDO
THERMDA
THERMDC
THERMTRIP
PROCHOT
IGNNE
SMI
A20M
SLP
PWRGOOD
RESET
VSS_SENSE
DB#3
DB#2
DB#1
DB#0
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VCCIOPLL
VCCA
VSSA
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
BSEL0
BSEL1
COMP0
VCCVID
VSS
RESERVED0
RESERVED1
RESERVED2
RESERVED3
RESERVED4
RESERVED5/VCCVIDPRG
RESERVED6
RESERVED7
NC
T430
T431
R789
0(R)
VCORE[2,4,6,19,42]
PM_CPUPERF#[2,19]
SMI#[18]
IGNNE#[18]
CPUSLP#[18]
A20M#[18]
NMI[18]
INTR[18]
DPSLP#[2,18,42]
INIT#[18]
HSTPCLK#[18]
VCC3[10,13,17,18,19,21,26,27,28,29,30,31,32,34,35,37,40,42]
SMI#[18]
HIT#[5]
IGNNE#[18]
BR0#[5]
DBSY#[5]
HLOCK#[5]
H_FERR#
BSEL0[10]
HDRDY# [5]
DEFER#[5]
HITM#[5]
CPUSLP#[18]
INIT#[18]
A20M#[18]
BSEL1[10]
BPRI#[5]
HSTPCLK#[18]
THERMDA
HCPURST#[5]
ADS#[5]
HTRDY# [5]
CPUPWRGD [19]
THERMDC
HDBI1#[5]
ITPCLK#[10]
BNR#[5]
NMI[18]
HDSTBP0#[5]
HDSTBP2#[5]
HADSTB0#[5]
HDSTBP1#[5]
HADSTB1#[5]
HDSTBN0#[5]
HDBI3#[5]
INTR[18]
HDSTBN3#[5]
HDBI0#[5]
ITPCLK[10]
HDSTBN1#[5]
HDBI2#[5]
HDSTBP3#[5]
HDSTBN2#[5]
FERR#[18]
H_FERR#
AGP_BUSY#[11,19]
CPUCLK#[10]
CPUCLK[10]
THERMDA
THERMDC
ATF_INT#[19,30]
OS#[26]
SMB_ICHCLK[9,10,19,25]
SMB_ICHDATA[9,10,19,25]
SCL_ATF[25,30,43]
SDA_ATF[25,30,43]
SDA_H8[30]
SCL_H8[30]
GTLREF GENERATION CIRCUITS
CPU SIGNAL TERMINATIONCLOSE TO CPU
Placement : 3 " form CPU (MAX)
RES Place close to ITP
12mil traceVCCA route parallel and VSSA routeL should be close to cLayout Note:20 mils20 mils

Sheet 3 of 44

CPU 2 of 2 (888E)