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5
Pentium 4 Processor /Northwood mPGA 478
Source Synchronous Signal Group and the Associated Strobes
Signals
Associated Strobe
REQ[4:0],A[16:3]#
ADSTB0#
A[31:17]#
ADSTB1#
D
D[15:0]#,DBI0#
DSTBP0#,DSTBN0#
D[31:16]#,DBI1#
DSTBP1#,DSTBN1#
D[47:32]#,DBI2#
DSTBP2#,DSTBN2#
D[63:48]#,DBI3#
DSTBP3#,DSTBN3#
Signals
Length
Inaccuracy
Data
2.0" to 10.0"
+/- 100 mil
Address
2.0" to 10.0"
+/- 200 mil
Strobe
2.0" to 10.0"
+/- 25 mil
Clock
2.0" to 10.0"
Don't need
*
Delta=(CPU_pkglen.net-CPUpkglen.strobe)+(CS_pkglen.net-CS_pkglen.strobe)
Trace : 7 mil width 13mil space
Miscellaneous Signals
C
HL_STB/HL_STB#
Taces 5mils
HL[0:10]
20mils
20mils
HL_STB
15mils
15mils
HL_STB#
20mils
20mils
HL[0:10]
* Max Length : 8"
* Max Length : 8"
* STB and STB# Length must be equal
* Length must be matched within +/- 0."
of the Strobe Signals
B
AGP
SIGNALS
1X Timing group
2X/4X Timing group
1X Timing group
SET#1
AGPCLK
GAD[15..0]
2X/4X Timing group
PIPE#
GC_BE#[1..0]
SET#1
RBF#
GAD_STB0
WBF#
GAD_STB0#
2X/4X Timing group
ST[2..0]
SET#2
GFRAME#
SET#2
GIRDY#
GAD[31..16]
2X/4X Timing group
GTRDY#
GC_BE#[3..2]
SET#3
A
GSTOP#
GAD_STB1
GDEVSEL#
GAD_STB1#
2X/4X Timing group
GREQ#
SET#1
GGNT#
SET#3
GPAR
SBA[7..0]
2X/4X Timing group
SB_STB
SET#2
SB_STB#
2X/4X Timing group
SET#3
5
4
ADSTB0#
should be +- 25mils
ADSTB1#
HL[10..0]
Others
HL[0:10]
HL[0:10]
Others
Maximum
Dismatch
Length
Width
Space
Length
Relative to
7.5"
5 mil
5 mil
X
X
GAD_STB0
7.25"
5 mil
20 mil
+/- 0.125"
GAD_STB0#
GAD_STB1
7.25"
5 mil
20 mil
+/- 0.125"
GAD_STB1#
SB_STB
SB_STB#
7.25"
5 mil
20 mil
+/- 0.125"
GAD_STB0
6"
5 mil
15 mil
+/- 0.25"
GAD_STB0#
GAD_STB1
6"
5 mil
15 mil
+/- 0.25"
GAD_STB1#
SB_STB
6"
5 mil
15 mil
+/- 0.25"
SB_STB#
4
3
2
USB
* USB Trace width : 9 mils
* USB Trace Spacing : 25 mils
* Differential USB Signlas Trace
Spacing : 18 mils
* USB Power Trace must be 40mils width
3
2
1
Title
Rev
Micro-Star
MS-6507
1.0
Document Number
Layout Guide
Last Revision Date:
Monday, September 24, 2001
Sheet
31
of
36
1
D
C
B
A
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