Datasheet

Infrared Serial Communications Interface Module (IRSCI)
MC68HC908LJ12 — Rev. 2.1 Technical Data
Freescale Semiconductor Infrared Serial Communications Interface Module (IRSCI) 229
13.3 Features
Features of the SCI module include the following:
• Full duplex operation
• Standard mark/space non-return-to-zero (NRZ) format
• Programmable 8-bit or 9-bit character length
• Separately enabled transmitter and receiver
• Separate receiver and transmitter CPU interrupt requests
• Two receiver wakeup methods:
– Idle line wakeup
– Address mark wakeup
• Interrupt-driven operation with eight interrupt flags:
– Transmitter empty
– Transmission complete
– Receiver full
– Idle receiver input
– Receiver overrun
– Noise error
– Framing error
– Parity error
• Receiver framing error detection
• Hardware parity checking
• 1/16 bit-time noise detection
Features of the infrared (IR) sub-module include the following:
• IR sub-module enable/disable for infrared SCI or conventional SCI
on TxD and RxD pins
• Software selectable infrared modulation/demodulation
(3/16, 1/16 or 1/32 width pulses)