mpc823rg Freescale Semiconductor, Inc, mpc823rg Datasheet - Page 855

• Manufacturer Part Number: mpc823rg
• Description: Mpc823 Powerquicc Integrated Communications Processor For Portable Systems
• Manufacturer: Freescale Semiconductor, Inc

RX—Receive Buffer
This bit indicates that a buffer has been received and its associated RX buffer descriptor is
now closed. It is set in the middle of the last stop bit of the last character that is written to the
receive buffer.
RECEIVED BY SMC UART
TXD
RXD
TRANSMITTED BY SMC UART
NOTES:
NOTE: The TX event assumes all seven characters were put into a single buffer, and the TX event occurred when the seventh
SMC UART SMCE
1. The first RX event assumes receive buffers are six bytes each.
2. The second RX event position is programmable based on the max_IDL value.
3. The BRK event occurs after the first break character is received.
CHARACTERS
TIME
SMC UART SMCE
EVENTS
CHARACTERS
character was written to the SMC transmit FIFO.
EVENTS
LINE IDLE
Figure 16-117. SMCx UART Interrupt Example
LINE IDLE
Freescale Semiconductor, Inc.
For More Information On This Product,
MPC823 REFERENCE MANUAL
Go to: www.freescale.com
10 CHARACTERS
7 CHARACTERS
RX
TX
Communication Processor Module
LINE IDLE
RX
LINE IDLE
BRK
BREAK
BRKE
16-403