Information

UARTx_RIDT field descriptions
Field Description
7–0
RIDT
CEA709.1-B Receive IDT register
Indicates the indeterminate time period after reception during which any activity on RX line will be
discarded. Indeterminate time period value should be less than Beta1 timer value.
48.3.48 UART CEA709.1-B Transmit Indeterminate Time
(UARTx_TIDT)
Address: Base address + 31h offset
Bit 7 6 5 4 3 2 1 0
Read
TIDT
Write
Reset
0 0 0 0 0 0 0 0
UARTx_TIDT field descriptions
Field Description
7–0
TIDT
CEA709.1-B Transmit IDT Register
This register indicates the indeterminate time period after transmission during which any activity on TX line
will be discarded. Indeterminate time period value should be less than Beta1 timer value.
48.4 Functional description
This section provides a complete functional description of the UART block.
The UART allows full duplex, asynchronous, NRZ serial communication between the
CPU and remote devices, including other CPUs. The UART transmitter and receiver
operate independently, although they use the same baud rate generator. The CPU
monitors the status of the UART, writes the data to be transmitted, and processes
received data.
48.4.1 CEA709.1-B
The UART provides support for CEA709.1-B, which is commonly used in building
automation, home networking, including all key building automation subsystems such as
heating, ventilating, airconditioning, lighting, security, fire detection, access control, and
energy monitoring.
Functional description
K20 Sub-Family Reference Manual, Rev. 1.1, Dec 2012
1320
Preliminary
Freescale Semiconductor, Inc.
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