January 2007
275
Intel
®
855GME Chipset and Intel
®
6300ESB ICH Embedded Platform Design Guide
Schematic Checklist Summary
12.3.1.3
DIMM Decoupling Recommendation Checklist
presents the DIMM decoupling recommendation checklist.
12.3.2
Frontside Bus (FSB) Checklist
presents the FSB Checklist.
depicts the Intel
®
855GME Chipset HXSWING
and HYSWING reference voltage generation circuit.
Table 123. DIMM Decoupling Recommendation Checklist
Pin Name
F
Qty
Notes
√
V_1P25_MEMVTT
0.1 µF
4.7 µF
470 µF
(55
3
4
Place one 0.1 µF cap close to every two pull-up
resistors terminated to V_1P25_MEMVTT (VTT for
DDR signal termination). Place two 4.7 µF caps at either
end of the VTT island and one near the center. Four
470 µF capacitors may be placed as bulk decoupling.
Refer to
for more information.
V_2P5_SM
0.1 µF
100-150 µF
(220 µF
)
(100 µF
)
9 (15
4
A minimum of nine high frequency caps are
recommended to be placed between the DIMMS.
A minimum of four low frequency caps are required.
Refer to section
for more information.
†
Used on Intel CRB.
Table 124. FSB Checklist (Sheet 1 of 2)
Pin Name
System
Pull-up/Pull-down
Notes
√
ADS#
Connect directly to processor (ADS# signal).
HTRDY#
Connect directly to processor (TRDY# signal).
DRDY#
Connect directly to processor (DRDY# signal).
DEFER#
Connect directly to processor (DEFER# signal).
HITM#
Connect directly to processor (HITM# signal).
HIT#
Connect directly to processor (HIT# signal).
HLOCK#
Connect directly to processor (LOCK# signal).
BREQ0#
Connect directly to processor (BR0# signal).
BNR#
Connect directly to processor (BNR# signal).
BPRI#
Connect directly to processor (BPRI# signal).
DBSY#
Connect directly to processor (DBSY# signal).
RS[2:0]#
Connect directly to processor (RS[2:0]# signals).
HA[31:3]#
Connect directly to processor (A[31:3]# signals).
HREQ[4:0]#
Connect directly to processor (REQ[4:0]# signals).
HADSTB[1:0]#
Connect directly to processor (ADSTB[1:0]# signals).
Содержание 6300ESB ICH
Страница 24: ...24 Intel 855GME Chipset and Intel 6300ESB ICH Embedded Platform Design Guide Introduction...
Страница 36: ...36 Intel 855GME Chipset and Intel 6300ESB ICH Embedded Platform Design Guide General Design Considerations...
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Страница 152: ...152 Intel 855GME Chipset and Intel 6300ESB ICH Embedded Platform Design Guide System Memory Design Guidelines DDR SDRAM...
Страница 172: ...172 Intel 855GME Chipset and Intel 6300ESB ICH Embedded Platform Design Guide Integrated Graphics Display Port...
Страница 190: ...190 Intel 855GME Chipset and Intel 6300ESB ICH Embedded Platform Design Guide Hub Interface...
Страница 246: ...246 Intel 855GME Chipset and Intel 6300ESB ICH Embedded Platform Design Guide Intel 6300ESB Design Guidelines...
Страница 264: ...264 Intel 855GME Chipset and Intel 6300ESB ICH Embedded Platform Design Guide Platform Clock Routing Guidelines...
Страница 298: ...298 Intel 855GME Chipset and Intel 6300ESB ICH Embedded Platform Design Guide Schematic Checklist Summary...
Страница 318: ...318 Intel 855GME Chipset and Intel 6300ESB ICH Embedded Platform Design Guide Layout Checklist...