Dual Mode CircLink™ Controller
Datasheet
1.6.2 Address Multiplex Selection
(nMUX/SCM[0]: Pin)
In peripheral mode, this pin specifies the system data bus from bit5 to 0 and whether or not the addresses
are multiplexed (Refer to Figure 5 - Non-Multiplex Bus). When the multiplexing bus option is selected, the
polarity of A2/ALE is specified based on A3/ALEPOL. In standalone mode, this pin is the clock-master-ID-
specification input SCM[0].
[In case of nMUX=H]\
D15-8
D7-0
A5-0
Data High Byte
Data Low Byte
Address
Figure 5 - Non-Multiplex Bus
[In Case of nMUX=L, ALEPOL=H]
1 Bus C ycle
D 1 5 -8
D 7 -6
A D 5 -0
ALE
Address
D ata H igh Byte
D ata bit7-6
D ata bit5-0
Figure 6 - Multiplex (Ale Falling-Edge Type)
SMSC TMC2074
Page 17
DATASHEET
Revision 0.1 (03-29-06)