TC1796
Peripheral Units (Vol. 2 of 2)
Asynchronous/Synchronous Serial Interface (ASC)
User’s Manual 19-37 V2.0, 2007-07
ASC, V2.0
Note: In synchronous operating mode of the ASC, the type of the selected RXD port pin
(input or output) is not automatically controlled by the ASC but must be defined by
a user program by writing the appropriate bit field in the IOCR registers.
Input/Output Control Registers
P5_IOCR0
Port 5 Input/Output Control Register 0(10
H
) Reset Value: 2020 2020
H
31 28 23 20 15 12 7 4 0
PC3 0PC20PC10PC00
rw rrwrrwrrwr
Field Bits Type Description
PC0,
PC1,
PC2,
PC3
[7:4],
[15:12],
[23:20],
[31:28]
rw Port Output Control for Port 5 Pins 0-3
1)
These bit fields determine the output port
functionality:
Port input/output control for P5.0/RXD0A
Port input/output control for P5.1/TXD0A
Port input/output control for P5.2/RXD1A
Port input/output control for P5.3/TXD1A
1) Coding of bit field see Table 19-9. Shaded bits and bit fields are “don’t care” for ASC I/O port control.
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