MC68HC908AP16CFB datasheet(268/440 Pages) MOTOROLA

268 / 440 page

Infrared Serial Communications

Data Sheet

MC68HC908AP Family — Rev. 2.5

268

MOTOROLA

14.6.3.7 Receiver Interrupts

The following sources can generate CPU interrupt requests from the SCI

receiver:

•

SCI receiver full (SCRF) — The SCRF bit in IRSCS1 indicates that

the receive shift register has transferred a character to the

IRSCDR. SCRF can generate a receiver interrupt request. Setting

the SCI receive interrupt enable bit, SCRIE, in IRSCC2 enables

the SCRF bit to generate receiver CPU interrupts.

•

Idle input (IDLE) — The IDLE bit in IRSCS1 indicates that 10 or 11

consecutive logic 1s shifted in from the RxD pin. The idle line

interrupt enable bit, ILIE, in IRSCC2 enables the IDLE bit to

generate CPU interrupt requests.

14.6.3.8 Error Interrupts

The following receiver error flags in IRSCS1 can generate CPU interrupt

requests:

•

Receiver overrun (OR) — The OR bit indicates that the receive

shift register shifted in a new character before the previous

character was read from the IRSCDR. The previous character

remains in the IRSCDR, and the new character is lost. The

overrun interrupt enable bit, ORIE, in IRSCC3 enables OR to

generate SCI error CPU interrupt requests.

•

Noise flag (NF) — The NF bit is set when the SCI detects noise on

incoming data or break characters, including start, data, and stop

bits. The noise error interrupt enable bit, NEIE, in IRSCC3 enables

NF to generate SCI error CPU interrupt requests.

•

Framing error (FE) — The FE bit in IRSCS1 is set when a logic 0

occurs where the receiver expects a stop bit. The framing error

interrupt enable bit, FEIE, in IRSCC3 enables FE to generate SCI

error CPU interrupt requests.

•

Parity error (PE) — The PE bit in IRSCS1 is set when the SCI

detects a parity error in incoming data. The parity error interrupt

enable bit, PEIE, in IRSCC3 enables PE to generate SCI error

CPU interrupt requests.

Freescale Semiconductor, Inc.

For More Information On This Product,

Go to: www.freescale.com

MC68HC908AP16CFB Datasheet(PDF) 268 Page - Motorola, Inc

MC68HC908AP16CFB Datasheet(HTML) 268 Page - Motorola, Inc

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

Datasheet Download

Link URL