System/Diagnostic Loopback Testing; Irda Data Modulation; Figure 15-2. Irda Data Modulation (3/16) - Cirrus Logic EP93 Series User Manual

UART2
EP93xx User's Guide

15.2.2.1 System/diagnostic Loopback Testing

It is possible to perform loopback testing for SIR data by setting the Loop Back Enable (LBE)
bit to 1 in the control register UARTCR (bit 7), and setting the SIRTEST bit to 1 in the test
register UARTTMR (bit 1).
Data transmitted on nSIROUT will be received on the SIRIN input.
Note: UART2TMR is the only occasion that a test register needs to be accessed during normal
15

15.2.3 IrDA Data Modulation

The effect of IrDA 3/16 data modulation can be seen in
15-4
operation.

Figure 15-2. IrDA Data Modulation (3/16)

Copyright 2007 Cirrus Logic
Figure 15-2.
DS785UM1