MC68HC08AS32 Datasheet, PDF (172/280 Pages) Motorola, Inc – M68HC08 Family of 8-bit microcontroller units (MCUs)

12.8.2 SCI Control Register 2
SCI control register 2:
• Enables the following CPU interrupt requests:
– Enables the SCTE bit to generate transmitter CPU interrupt requests
– Enables the TC bit to generate transmitter CPU interrupt requests
– Enables the SCRF bit to generate receiver CPU interrupt requests
– Enables the IDLE bit to generate receiver CPU interrupt requests
• Enables the transmitter
• Enables the receiver
• Enables SCI wakeup
• Transmits SCI break characters
Address: $0014
Bit 7
6
5
4
3
2
1
Bit 0
Read:
Write: ^SCTIE
TCIE
SCRIE
ILIE
TE
RE
RWU
SBK
Reset:
0
0
0
0
0
0
0
0
Figure 12-9. SCI Control Register 2 (SCC2)
SCTIE — SCI Transmit Interrupt Enable Bit
This read/write bit enables the SCTE bit to generate SCI transmitter CPU
interrupt requests. Reset clears the SCTIE bit.
1 = SCTE enabled to generate CPU interrupt requests
0 = SCTE not enabled to generate CPU interrupt requests
TCIE — Transmission Complete Interrupt Enable Bit
This read/write bit enables the TC bit to generate SCI transmitter CPU interrupt
requests. Reset clears the TCIE bit.
1 = TC enabled to generate CPU interrupt requests
0 = TC not enabled to generate CPU interrupt requests
SCRIE — SCI Receive Interrupt Enable Bit
This read/write bit enables the SCRF bit to generate SCI receiver CPU interrupt
requests. Reset clears the SCRIE bit.
1 = SCRF enabled to generate CPU interrupt requests
0 = SCRF not enabled to generate CPU interrupt requests
ILIE — Idle Line Interrupt Enable Bit
This read/write bit enables the IDLE bit to generate SCI receiver CPU interrupt
requests. Reset clears the ILIE bit.
1 = IDLE enabled to generate CPU interrupt requests
0 = IDLE not enabled to generate CPU interrupt requests
TE — Transmitter Enable Bit
Setting this read/write bit begins the transmission by sending a preamble of 10
or 11 logic 1s from the transmit shift register to the PTE0/TxD pin. If software
Data Sheet
172
MC68HC08AS32 — Rev. 4.1
Freescale Semiconductor