Processor Cmos Pullup Values; Processor And 82820 Mch Connection Checklist - Intel VC820 - Desktop Board Motherboard Design Manual

2.11

Processor CMOS Pullup Values

Table 2-13
chipset. This table supports both single and dual processor configurations.
Table 2-13. Processor and 82820 MCH Connection Checklist
CPU Pin
AGTL+ Signals
1
A[35:3]#
1
ADS#
AERR#
AP[1:0]#
BERR#
BINIT#
1
BNR#
BP[3:2]#
BPM[1:0]
1
BPRI#
BREQ0# (BR0#) 10 Ω pull down to GND
BREQ1# (BR1#) Leave as N/C
1
D[63:0]#
1
DBSY#
DEFER#
DEP[7:0]#
1
DRDY#
1
HIT#
1
HITM#
1
LOCK#
REQ[4:0]#
RESET#
RP#
RS[2:0]#
RSP#
1
TRDY#
®
Intel 820 Chipset Design Guide
contains the pullup values for the Intel
UP Pin Connection (CPU0)
Connect A[31:3]# to MCH. Leave A[35:32]#
as N/C (not supported by chipset).
Connect to MCH
Leave as N/C (not supported by chipset).
Leave as N/C (not supported by chipset).
Leave as N/C (not supported by chipset).
Leave as N/C (not supported by chipset).
Connect to MCH
Leave as N/C
Leave as N/C
Connect to MCH
Connect to MCH
Connect to MCH
1
Connect to MCH
Leave as N/C (not supported by chipset).
Connect to MCH
Connect to MCH
Connect to MCH
Connect to MCH
1
Connect to MCH
1 Connect to MCH, 240 Ω series resistor to ITP Connect to 2
Leave as N/C (not supported by chipset).
1
Connect to MCH
Leave as N/C (not supported by chipset).
Connect to MCH
Layout/Routing Guidelines
® ®
III processor with the Intel
Pentium
1,2
DP Pin Connection (CPU1)
Connect A[31:3]# to 2
nd
Connect to 2 processor
Leave as N/C
Leave as N/C
Leave as N/C
Leave as N/C
nd
Connect to 2 processor
Leave as N/C
Leave as N/C
nd
Connect to 2 processor
See and
See and
nd
Connect to 2 processor
nd
Connect to 2 processor
nd
Connect to 2 processor
Leave as N/C
nd
Connect to 2 processor
nd
Connect to 2 processor
nd
Connect to 2 processor
nd
Connect to 2 processor
nd
Connect to 2 processor
nd
processor
Leave as N/C
nd
Connect to 2 processor
Leave as N/C
nd
Connect to 2 processor
®
820
nd
processor
2-49