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UM10503
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© NXP B.V. 2015. All rights reserved.
User manual
Rev. 2.1 — 10 December 2015
1172 of 1441
NXP Semiconductors
UM10503
Chapter 41: LPC43xx/LPC43Sxx UART1
While starting transmission of the initial character the CTS1 signal is asserted.
Transmission will stall as soon as the pending transmission has completed. The UART will
continue transmitting a 1 bit as long as CTS1 is de-asserted (high). As soon as CTS1 gets
de-asserted transmission resumes and a start bit is sent followed by the data bits of the
next character.
41.7.2 Auto-baud
See
.
41.7.3 Auto-baud modes
See
.
41.7.4 Baud rate calculation
See
.
41.7.5 RS-485/EIA-485 modes of operation
See
.
Fig 134.Auto-CTS Functional Timing
start
bits0..7
start
bits0..7
stop
start
bits0..7
stop
UART1 TX
CTS1 pin
~ ~
~ ~
~ ~
~ ~
stop