TC1796
Peripheral Units (Vol. 2 of 2)
Asynchronous/Synchronous Serial Interface (ASC)
User’s Manual 19-34 V2.0, 2007-07
ASC, V2.0
19.3.2.2 Peripheral Input Select Registers
The ASC0/ASC1 modules include a peripheral input select register that is used to switch
the RXD input lines of the ASC0/ASC1 module kernels alternatively to Port 5 or Port 6
as shown in Table 19-14. Register ASC0_PISEL controls the RXD input selection for
ASC0, and ASC1_PISEL controls the RXD input selection for ASC1.
Figure 19-14 RXD Input Line Selection of the ASC Modules
ASC0
Module
(Kernel)
ASC1
Module
(Kernel)
MCA05775
P5.0 /
RXD0A
P5.1 /
TXD0A
RXD_I1
RXD_O
PISEL
RXD_I0
Port 5
Control
TXD_O
P5.2 /
RXD1A
P5.3 /
TXD1A
RXD_I1
RXD_O
PISEL
RXD_I0
TXD_O
P6.8 /
RXD0B
6.9 /
TXD0B
Port 6
Control
P6.10 /
RXD1B
P6.11 /
TXD1B