MC68HC912BD32 Datasheet, PDF (158/292 Pages) Freescale Semiconductor, Inc – Advance Information

Serial Interface
Freescale Semiconductor, Inc.
SC0SR2 — SCI Status Register 2
$00C5
Bit 7
6
5
4
3
2
1
Bit 0
0
0
0
0
0
0
0
RAF
RESET:
0
0
0
0
0
0
0
0
Read anytime. Write has no meaning or effect.
RAF — Receiver Active Flag
This bit is controlled by the receiver front end. It is set during the RT1
time period of the start bit search. It is cleared when an idle state is
detected or when the receiver circuitry detects a false start bit
(generally due to noise or baud rate mismatch).
0 = A character is not being received
1 = A character is being received
SC0DRH — SCI Data Register High
$00C6
Bit 7
6
5
4
3
2
1
Bit 0
R8
T8
0
0
0
0
0
0
RESET:
0
0
0
0
0
0
0
0
SC0DRL — SCI Data Register Low
Bit 7
6
5
R7/T7 R6/T6 R5/T5
RESET:
0
0
0
4
R4/T4
0
3
R3/T3
0
2
R2/T2
0
1
R1/T1
0
Bit 0
R0/T0
0
$00C7
R8 — Receive Bit 8
Read anytime. Write has no meaning or affect.
This bit is the ninth serial data bit received when the SCI system is
configured for nine-data-bit operation.
T8 — Transmit Bit 8
Read or write anytime.
This bit is the ninth serial data bit transmitted when the SCI system is
configured for nine-data-bit operation. When using 9-bit data format
this bit does not have to be written for each data word. The same
value will be transmitted as the ninth bit until this bit is rewritten.
MC68HC912BD32 Rev 1.0
Serial Interface
For More Information On This Product,
Go to: www.freescale.com
12-sint