Renesas H8S/2100 Series, Hardware Manual

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Section 16 CIR Interface
Rev. 1.00 Apr. 28, 2008 Page 483 of 994
REJ09B0452-0100
(2)
Stop
When a low-level period of 9 ms or more is detected after the reception of a command, the CIR
stops data reception. This is not defined in the NEC format.
Command Stop
C = 0.56 ms D = 1.78 ms
C
A = 9.0 ms
CIRI
A: Low-level period for a stop
C: High-level period for logic 0/1, low-level period for logic 0, and high-level period for a stop
D: Low-level period for logic 1
[Legend]
Figure 16.4 Stop
(3)
Repeat
When a key of the remote controller remains pressed, the command is sent only once, followed by
a repeat signal. When a 9-ms high level and the following 2.25-ms low level are detected, they are
recognized as a repeat header.
Repeat
Repeat - Header
A = 9.0 ms E = 2.25 ms
C = 0.56 ms
[Legend]
A: High-level period for a repeat header
E: Low-level period for a repeat header
C: High-level period for a repeat
CIRI
Figure 16.5 Repeat