LSI Logic Confidential
SIO IR (Infrared) Interface
15-5
Copyright © 2001, 2002 by LSI Logic Corporation. All rights reserved.
Figure 15.2 NCR IR Protocol
In
, successive line traces show increasing detail in the IRTX
waveform (as if zooming in to reveal more detail).
SIO_IRTX and SIO_IRRX are asynchronous. The timing parameter
values are under program control, e.g., application-specific.
9 ms
2.25 ms
108 ms
58.5 ~ 76.5 ms
108 ms
18 ~ 36 ms
4.5 ms
27 ms
9 ms
New Key
Repeated Keypress
9 ms
4.5 ms
0.56 ms
1.125 ms
2.25 ms
0
1
0
1
0
0
1
0
Repeated Keypress
0.56 ms
Repeated Keypress
Carrier Waveform
9 ms or 0.56 ms
8.77
µ
s
26.3
µ
s
Leader Code
Custom Code
Custom Code
Data Code
Data Code
Содержание DMN-8600
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