Uart Signal Descriptions; Detailed Signal Descriptions; Memory Map And Registers - NXP Semiconductors MKL27Z128VFM4 Reference Manual

UART signal descriptions

38.3 UART signal descriptions
The UART signals are shown in the following table.
Signal Description
RXD Receive data
TXD Transmit data

38.3.1 Detailed signal descriptions

The detailed signal descriptions of the UART are shown in the following table.
Signal I/O
RXD
TXD O

38.4 Memory map and registers

This section provides a detailed description of all memory and registers.
Only byte accesses are supported.
Absolute
address
(hex)
4006_C000 UART Baud Rate Registers: High (UART2_BDH)
680
Table 38-1. UART signal descriptions
Table 38-2. UART—Detailed signal descriptions
I
State meaning Whether RXD is interpreted as a 1 or 0 depends on the bit encoding
method along with other configuration settings.
Timing Sampled at a frequency determined by the module clock divided by the
baud rate.
Transmit data. Serial data output from transmitter.
State meaning Whether TXD is interpreted as a 1 or 0 depends on the bit encoding
method along with other configuration settings.
Timing
Driven at the beginning or within a bit time according to the bit encoding
method along with other configuration settings. Otherwise, transmissions
are independent of reception timing.
UART memory map
Register name
Table continues on the next page...
KL27 Sub-Family Reference Manual , Rev. 5, 01/2016
Description
Receive data. Serial data input to receiver.
Width
(in bits)
8
I/O
I
O
Section/
Access Reset value
R/W 00h 38.4.1/682
Freescale Semiconductor, Inc.
page