Freescale Semiconductor, Inc.
Serial Communications Interface (SCI)
17.8.2 PTE1/SCRxD (Receive Data)
The PTE1/SCRxD pin is the serial data input to the SCI receiver. The
SCI shares the PTE1/SCRxD pin with port E. When the SCI is enabled,
the PTE1/SCRxD pin is an input regardless of the state of the DDRE1 bit
in data direction register E (DDRE).
17.9 I/O Registers
These 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)
17.9.1 SCI Control Register 1
SCI control register 1:
• Enables loop mode operation
• Enables the SCI
• Controls output polarity
• Controls character length
• Controls SCI wakeup method
• Controls idle character detection
• Enables parity function
• Controls parity type
Technical Data
MC68HC908AS60 — Rev. 1.0
Serial Communications Interface (SCI)
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