mc68hc11d0 Freescale Semiconductor, Inc, mc68hc11d0 Datasheet - Page 68

• Manufacturer Part Number: mc68hc11d0
• Description: Mc68hc11d0 Microcontroller
• Manufacturer: Freescale Semiconductor, Inc

7.3 Receive Operation
7-2
TRANSMITTER
REQUESTS
BAUD RATE
During receive operations, the transmit sequence is reversed. The serial shift register
receives data and transfers it to a parallel receive data register (SCDR) as a complete
word. Refer to Figure 7-2. This double buffered operation allows a character to be
shifted in serially while another character is already in the SCDR. An advanced data
SCI Rx
CLOCK
SCCR1 SCI CONTROL 1
SCI INTERRUPT
REQUEST
H (8) 7
10 (11) - BIT Tx SHIFT REGISTER
Figure 7-1 SCI Transmitter Block Diagram
SCDR Tx BUFFER
Freescale Semiconductor, Inc.
6
For More Information On This Product,
5
SERIAL COMMUNICATIONS INTERFACE
4
3
TDRE
TIE
TC
TCIE
CONTROL LOGIC
2
TRANSMITTER
Go to: www.freescale.com
1
SCSR INTERRUPT STATUS
0
L
(WRITE ONLY)
SCCR2 SCI CONTROL 2
DIRECTION (OUT)
FORCE PIN
8
AND CONTROL
PIN BUFFER
8
DDD1
INTERNAL
DATA BUS
8
TECHNICAL DATA
11 SCI TX BLOCK
PD1
TxD