MC68HC08AZ16 Datasheet, PDF (191/527 Pages) Motorola, Inc – HCMOS Microcontroller Unit

Serial Communications Interface Module (SCI)
I/O registers
The following I/O registers control and monitor SCI operation:
• SCI control register 1 (SCC1)
• SCI control register 2 (SCC2)
• SCI control register 3 (SCC3)
• SCI status register 1 (SCS1)
• SCI status register 2 (SCS2)
• SCI data register (SCDR)
• SCI baud rate register (SCBR)
SCI control register
1 (SCC1)
SCI control register 1 does the following:
• Enables loop mode operation
• Enables the SCI
• Controls output polarity
• Controls character length
• Controls SCI wake-up method
• Controls idle character detection
• Enables parity function
• Controls parity type
Bit 7
6
5
4
3
2
1
Bit 0
SCC1
$0013
Read:
LOOPS
Write:
ENSCI
TXINV
M
WAKE ILTY
PEN
PTY
Reset: 0
0
0
0
0
0
0
0
Figure 5. SCI control register 1 (SCC1)
MC68HC08AZ32
190
Serial Communications Interface Module (SCI)
22-sci
MOTOROLA