mc68hc908mr8 Freescale Semiconductor, Inc, mc68hc908mr8 Datasheet - Page 270

• Manufacturer Part Number: mc68hc908mr8
• Description: M68hc08 Microcontrollers Microcontroller
• Manufacturer: Freescale Semiconductor, Inc

Serial Communications Interface (SCI)
Technical Data
270
Reset:
R8 — Received Bit 8
T8 — Transmitted Bit 8
ORIE — Receiver Overrun Interrupt Enable Bit
NEIE — Receiver Noise Error Interrupt Enable Bit
dress:
Read:
Write:
Ad-
When the SCI is receiving 9-bit characters, R8 is the read-only ninth
bit (bit 8) of the received character. R8 is received at the same time
that the SCDR receives the other 8 bits.
When the SCI is receiving 8-bit characters, R8 is a copy of the eighth
bit (bit 7). Reset has no effect on the R8 bit.
When the SCI is transmitting 9-bit characters, T8 is the read/write
ninth bit (bit 8) of the transmitted character. T8 is loaded into the
transmit shift register at the same time that the SCDR is loaded into
the transmit shift register. Reset has no effect on the T8 bit.
This read/write bit enables SCI error CPU interrupt requests
generated by the receiver overrun bit, OR.
This read/write bit enables SCI error CPU interrupt requests
generated by the noise error bit, NE. Reset clears NEIE.
1 = SCI error CPU interrupt requests from OR bit enabled
0 = SCI error CPU interrupt requests from OR bit disabled
1 = SCI error CPU interrupt requests from NE bit enabled
0 = SCI error CPU interrupt requests from NE bit disabled
$003A
Serial Communications Interface (SCI)
Bit 7
R8
R
U
R
Figure 13-9. SCI Control Register 3 (SCC3)
= Reserved
T8
U
6
R
5
0
0
R
4
0
0
U = Unaffected
ORIE
3
0
MC68HC908MR8 — Rev 4.1
NEIE
Freescale Semiconductor
2
0
FEIE
1
0
PEIE
Bit 0
0