Intel 855GME User Manual

282
Intel
®
855GME Chipset and Intel
®
6300ESB ICH Embedded Platform Design Guide
Schematic Checklist Summary
Table 131. GMCH Decoupling Recommendations Checklist (Sheet 1 of 2)
Pin Name Configuration F Qty Notes
√
VCC[18:1]
Connect to
V1P35_GMCH.
0.1 µF
150 µF
10 µF
4
2
1
Bulk decoupling is based on VR
solutions used on CRB design.
VTTLF[21:1] Connect to VCCP
0.1 µF
270 µF
10 µF
3
1
1
Bulk decoupling is based on VR
solutions used on CRB design.
VTTHF[5:1] 0.1 µF 5
Connect pins directly to caps to
GND.
VCCHL[8:1]
Connect to
V1P35_GMCH.
0.1 µF
10 µF
2
1
Bulk decoupling is based on VR
solutions used on CRB design.
VCC_SM[37:1]
Connect to
V_2P5_SM.
0.1 µF
150 µF
11
2
Bulk decoupling is based on VR
solutions used on CRB design.
VCC_QSM[2:1]
Connect to
V_2P5_SM with filter
network.
0.1 µF
4.7 µF+1
Ω
1
1 each
0.68 µH from power supply to
GMCH pins. On GMCH side of
inductor: one 0.1 µF to GND,
4.7 µF + 1
Ω to GND.
VCCASM[2:1]
Connect to
V1P35_GMCH with
filter network.
0.1 µF
100 µF
1
1
1 µH from power supply to GMCH
pins, with caps on GMCH side of
inductor.
VCC_DVO[16:1]
Connect to
V_1P5_CORE.
0.1 µF
10 µF
150 µF
2
1
1
Bulk decoupling is based on VR
solutions used on CRB design.
VCC_ADAC[2:1]
Connect to
V_1P5_CORE.
0.01 µF
0.1 µF
220 µF
(no stuff)
1
1
1
Route VSSADAC to other side of
the caps, then to ground.
Consider a 0-ohm 0805 resistor
between the caps and
V_1P5_CORE.
This and the 220 µF cap footprint
are there in case there is noise
issue with the VGA supply.
VCC_ALVDS
Connect to
V_1P5_CORE
0.1 µF
0.01 µF
1
1
Route VSSALVDS to other side of
the caps, then to ground.
VCC_DLVDS[4:1]
Connect to
V_1P5_CORE
0.1 µF
22 µF
47 µF
1
1
1
Bulk decoupling is based on VR
solutions used on CRB design.
VCC_TXLVDS[4:1]
Connect to
V_2P5_CORE
0.1 µF
22 µf
47 µF
3
1
1
Bulk decoupling is based on VR
solutions used on CRB design.
VCC_GPIO[2:1] Connect to VCC3
0.1 µF
10 µF
1
1
Bulk decoupling is based on VR
solutions used on CRB design.
VCC_AHPLL
Connect to
V1P35_GMCH
0.1 µF 1
NOTE: Decoupling guidelines are recommendations based on our reference board design. Customers may
need to take layout and PCB board design into consideration when deciding on overall decoupling
solution.

Intel 855GME Specifications

General

Brand	Intel
Model	855GME
Category	Computer Hardware
Language	English