Design Guide

A
A
B
B
C
C
D
D
E
E
4 4
3 3
2 2
1 1
CPU Thermal Sensor
Layout Note:
Route H_THERMDA and
H_THERMDC on same
layer.
10 mil trace on 10 mil
spacing.
Note: No Stuff for
Normal Operation
Address Select Straps
Current Address:
1001 110x
Thermal Diode Conn
Note:
If using Thermal Diode
Conn, NO STUFF C372
and U14.
The ITP should be at
the end of the
H_CPURST#
transmission line but
less than 6.0" from
the processor.
Place TCK
pulldown resistor
within 1" of ITP.
Note:
All traces between ITP Con
and 0 ohm res must be
short as possible
Note:
C1F2 not needed for
Customer Platforms
Layout:
Route H_TCK according
to RDDP guidelines
Run separate H_TCK
trace to processor for
FBO and TCK pins on
ITP.
4.401
CPU Thermal Sensor & ITP
A
550Monday, September 15, 2003
Intel 855GM/GME CRB <Doc>
Title
Size Document Number Rev
Date: Sheet
of
Project:
THRM_ALERT#
ADD0
STBY#
ADD1
RESET_FLEX#
TDO_FLEX
SMB_THRM_CLK 32,37
SMB_THRM_DATA 32,37
H_THERMDC3
H_THERMDA3
H_CPURST#3,8
+V3.3S6,8,9,11,15..18,20,21,23,26,31,33..36,38..40,45
+V3.3S6,8,9,11,15..18,20,21,23,26,31,33..36,38..40,45
+VCCP 3,4,9,18..20,40,42,46
+VCCP3,4,9,18..20,40,42,46
+V3.3ALWAYS 15,19..23,27..29,32,36..39,45
+VCCP3,4,9,18..20,40,42,46
PM_THRM# 19,21,32,37
H_TMS3
H_TDO3
H_TCK3
H_TRST#3
CLK_ITP#6
H_BPM3_ITP# 3
H_BPM4_PRDY# 3
CLK_ITP6
H_BPM5_PREQ# 3
H_TCK3
H_BPM0_ITP# 3
ITP_DBRESET# 3,45,46
TDI_FLEX3
H_BPM1_ITP# 3
H_BPM2_ITP# 3
R1F4
54.9_1%
R1F3 22.6_1%
R1F2
54.9_1%
J1F1
ITP700-FLEXCON
1
2
3
4
5
6
7
8
9
10
11
12
13
14 15
16
17
18
19
20
21
22
23
24
25
26
27
28
TDI
TMS
TRST#
NC1
TCK
NC2
TDO
BCLKn
BCLKp
GND0
FBO
RESET#
BPM5#
GND1 BPM4#
GND2
BPM3#
GND3
BPM2#
GND4
BPM1#
GND5
BPM0#
DBA#
DBR#
VTAP
VTT0
VTT1
R2B3
NO_STUFF_0
U2A1
ADM1023
2
4
10
6
7
8
15
12
14
11
1
5
13
16
9
3
VCC
DXN
ADD0
ADD1
GND1
GND2
STBY#
SMBDATA
SMBCLK
ALERT#
NC1
NC2
NC4
NC5
NC3
DXP
R1F1
150
RP2B1C
10K
36
THERMDNTHERMDP
GND0
GND1
GND2
GND3
J4A1
NO_STUFF_3Pin_Recepticle
12
3 4 5 6
C1F2
NO_STUFF_100pF
R1F5 22.6_1%
R2B4
1K
RP2B1B
10K
27
C2A1
2200PF
R1F12
39.2_1%
R1F7
680
C1F1
0.1UF
RP2B1D
10K
45
R1F6
27.4_1%
R2B5
1K
C2B2
0.1UF