MC908AP16CFAE Datasheet, PDF (209/324 Pages) Freescale Semiconductor, Inc – Table of Contents

I/O Registers
12.9.8 IRSCI Infrared Control Register
The infrared control register contains the control bits for the infrared sub-module.
• Enables the infrared sub-module
• Selects the infrared transmitter narrow pulse width
Address: $0047
Bit 7
6
5
4
3
2
1
Bit 0
Read:
0
0
0
R
R
TNP1
TNP0
IREN
Write:
Reset: 0
0
0
0
0
0
0
0
= Unimplemented
R
= Reserved
Figure 12-20. IRSCI Infrared Control Register (IRSCIRCR)
TNP1 and TNP0 — Transmitter Narrow Pulse Bits
These read/write bits select the infrared transmitter narrow pulse width as shown in Table 12-10. Reset
clears TNP1 and TNP0.
Table 12-10. Infrared Narrow Pulse Selection
TNP1 and TNP0
00
01
10
11
Prescaler Divisor (PD)
SCI transmits a 3/16 narrow pulse
SCI transmits a 1/16 narrow pulse
SCI transmits a 1/32 narrow pulse
IREN — Infrared Enable Bit
This read/write bit enables the infrared sub-module for encoding and decoding the SCI data stream.
When this bit is clear, the infrared sub-module is disabled. Reset clears the IREN bit.
1 = infrared sub-module enabled
0 = infrared sub-module disabled
MC68HC908AP Family Data Sheet, Rev. 4
Freescale Semiconductor
209