Information

45.3.48 UART CEA709.1-B Transmit Indeterminate Time
(UARTx_TIDT)
Addresses: UART0_TIDT is 4006_A000h base + 31h offset = 4006_A031h
UART1_TIDT is 4006_B000h base + 31h offset = 4006_B031h
UART2_TIDT is 4006_C000h base + 31h offset = 4006_C031h
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.
45.4 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.
45.4.1 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.
Chapter 45 Universal Asynchronous Receiver/Transmitter (UART)
K20 Sub-Family Reference Manual, Rev. 2, Feb 2012
Freescale Semiconductor, Inc. 1097