5.4.2 SERIAL INTERFACE PROGRAMMING
Programming the serial interfaces consists of configuration, which occurs during POST, and
control, which occurs during runtime.
5.4.2.1 Serial Interface Configuration
The serial interface must be configured for a specific address range (COM1, COM2, etc.) and also
must be activated before it can be used. Address selection and activation of the serial interface are
affected through the PnP configuration registers of the LPC47B387 I/O controller.
The serial interface configuration registers are listed in the following table:
Table 5-11. Serial Interface Configuration Registers
Serial Interface Configuration Registers
Index
Address
Function
30h
Activate
60h
Base Address MSB
61h
Base Address LSB
70h
Interrupt Select
F0h
Mode Register
NOTE:
Refer to LPC47B387 data sheet for detailed register information.
Table 5-11.
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Technical Reference Guide
R/W
R/W
R/W
R/W
R/W
R/W
5-11