242
Intel
®
855GME Chipset and Intel
®
6300ESB ICH Embedded Platform Design Guide
Intel
®
6300ESB Design Guidelines
In some instances, it is desirable to program the FWH during assembly with the device soldered
down on the board. In order to decrease programming time it becomes necessary to apply 12 V to
the V
PP
pin. The following circuit will allow testers to put 12 V on the V
PP
pin while keeping this
voltage separated from the 3.3 V plane to which the rest of the power pins are connected. This
circuit also allows the board to operate with 3.3 V on this pin during normal operation.
9.14
GPIO Summary
The 6300ESB platform has 12 general purpose inputs, 9 general purpose outputs, and 16 general
purpose inputs/outputs.
Figure 134.
FWH VPP Isolation Circuitry
B1191-01
FET
1 K
Ω
(from Motherboard)
VPP
3.3 V
12 V
Table 102.
GPIO Summary (Sheet 1 of 2)
GPIO Number
Power Well
Input-Output
Tolerance
If Not Used
0
Core
Input
3.3 V
Recommend an
8.2 K
Ω
pull-up
resistor to
V
CC
3.3
1
Core
Input
3.3 V
2
Core
Input
5 V
Recommend an
8.2 K
Ω
pull-up
resistor to
V
CC
3.3 or a 2.7
K
Ω
pull-up
resistor to V
CC
5
3
Core
Input
5 V
4
Core
Input
5 V
5
Core
Input
5 V
6
Core
Input
3.3 V
Recommend an
8.2 K
Ω
pull-up
resistor to
V
CC
3.3
7
Core
Input
3.3 V
8
Resume
Input
3.3 V
Recommend an
8.2 K
Ω
pull-up
resistor to
V
CCSus
3.3
11
Resume
Input
3.3 V
12
Resume
Input
3.3 V
13
Resume
Input
3.3 V
Summary of Contents for 6300ESB ICH
Page 24: ...24 Intel 855GME Chipset and Intel 6300ESB ICH Embedded Platform Design Guide Introduction...
Page 102: ...102 Intel 855GME Chipset and Intel 6300ESB ICH Embedded Platform Design Guide...
Page 122: ...122 Intel 855GME Chipset and Intel 6300ESB ICH Embedded Platform Design Guide...
Page 190: ...190 Intel 855GME Chipset and Intel 6300ESB ICH Embedded Platform Design Guide Hub Interface...
Page 318: ...318 Intel 855GME Chipset and Intel 6300ESB ICH Embedded Platform Design Guide Layout Checklist...
