Section 16 Cir Interface; Features - Renesas H8S/2100 Series Hardware Manual

This LSI incorporates a custom infra-red interface (CIR). The CIR has various functions for
receiving the IR signal in NEC format.
16.1

Features

• Supports reception of the IR signal in NEC format
• Sampling clock selectable
Selectable from internal clocks φ, φ/2, and φ/4, and subclock (φ
• Noise canceling function
Input noise can be filtered out by using a maximum of four stages of filters.
• Polarity inversion of the input signal supported
• 18-byte FIFO incorporated
• Six interrupt sources: receive end, framing error, overrun error, repeat detection, abort
generation, and header detection
Interrupt sources can be specified by checking each flag.
Figure 16.1 is a block diagram of the CIR.

Section 16 CIR Interface

Section 16 CIR Interface
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Rev. 1.00 Apr. 28, 2008 Page 469 of 994
REJ09B0452-0100