Product specifications

Design Guide - VT82C694X Apollo Pro133 with VT82C686A
Preliminary Revision 0.5, November 19, 1999 49 Motherboard Design Guidelines
Technologies, Inc.
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Note: MAB[14:0]# represents MAB[14:11]#, MAB10 and MAB[9:0]#.
VT82C694X
(North Bridge)
DIMM1DIMM3 DIMM2
0.4" < L2 < 0.5"
MAA[14:0]
MD[63:0]
CASA[7,6,4:2,0]#
MECC[7:0]
SWEA#
SRASA#
SCASA#
SWEB#
SRASB#
SCASB#
RASA[1:0]#
RASB[1:0]#
RASA[5:4]#
RASB[5:4]#
RASA[3:2]#
RASB[3:2]#
No Connet
0.4" < L3 < 0.5"
MAB[14:0]#
RASA[7:6]#
RASB[7:6]#
2" < L4 < 3.5"
2" < L6 < 4"
CASB[5,1]#
CASA[5,1]#
(Group A)(Group B)
0.4" < L5 < 0.5"
2" < L1 < 3.5"
Figure 2-41. T-Style Routing for Three-DRAM DIMM Slots
Note: Comparing to Daisy Chain Ordering routings in Figure 2-40, the advantage of T-Style routings is less signal reflection on
traces.