Intel® 820E Chipset

 

 

 

 

R

Figure 100. 4.5 mil Stack-Up

181

Figure 101. Intel® 820E Chipset Power Delivery Example

184

Figure 102. 1.8 V and 2.5 V Power Sequencing (Schottky Diode)

187

Figure 103.

Example 1.8V/3.3V Power Sequencing Circuit

189

Figure 104.

Example 3.3V/5V REF Sequencing Circuitry

190

Figure 105. Use a GPO to Reduce DRCG Frequency

191

Figure 106.

Example of ICH2 Power Plane Split

192

Tables

Table 1. Intel® 820E Chipset Platform Bandwidth Summary

17

Table 2. AGP 2× Data/Strobe Association

33

Table 3. Placement Guidelines for Motherboard Routing Lengths

35

Table 4. Copper Tab Area Calculation

42

Table 5. RSL and Clocking Signal RIMM Connector Capacitance Recommendations

47

Table 6. Copper Tab Area Calculation

48

Table 7. RSL Routing Layer Requirements

50

Table 8. Line Matching and Via Compensation Example

53

Table 9. Signal List

57

Table 10. AGP 2.0 Data/Strobe Associations

62

Table 11. AGP 2.0 Routing Summary

64

Table 12. TYPDET#/VDDQ Relationship

67

Table 13. Connector / Add-in Card Interoperability

71

Table 14. Voltage / Data Rate Interoperability

71

Table 15. 8-Bit Hub Interface Buffer Configuration Setting

75

Table 16. 8-Bit Hub Interface HUBREF Generation Circuit Specifications

76

Table 17. 8-Bit Hub Interface RCOMP Resistor Values

77

Table 18. Signal Descriptions

89

Table 19. Codec Configurations

90

Table 20. Pull-Up Requirements for SMBus and SMLink Signals

95

Table 21. Usage of I/O APIC Interrupt Inputs 16 through 23

101

Table 22. LAN Design Guide Section Reference

103

Table 23. Length Requirements for Figure 66

105

Table 24. Related Documents

112

Table 25. Decoupling Capacitor Recommendation

122

Table 26. PCI Interface

125

Table 27. Hub Interface

126

Table 28. LAN Interface

126

Table 29. EEPROM Interface

126

Table 30. FWH Flash BIOS Interface

126

Table 31. Interrupt Interface

127

Table 32. GPIO

128

Table 33. USB Interface

128

Table 34. Power Management

129

Table 35. Processor Signals

129

Table 36. System Management

130

Table 37. RTC

130

Table 38. AC’97

130

Table 39. Miscellaneous Signals

131

Table 40. Power

131

Table 41. IDE Checklist

132

Table 42. ISA Bridge Checklist

133

Table 43. 8-Bit Hub Interface

134

Table 44. IDE Interface

134

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Design Guide

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Intel 820E manual Tables, Mil Stack-Up