User's Manual

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