Uart1 Transmit Enable Register (U1Ter - 0Xe001 0030) - Philips LPC214 Series User Manual

Philips Semiconductors
Volume 1
UART1 Rx
U1ACR Start
rate counter
16xbaud_rate
UART1 Rx
U1ACR Start
rate counter
16xbaud_rate
Fig 22. Autobaud Mode 0 and Mode 1 waveform

10.3.17 UART1 Transmit Enable Register (U1TER - 0xE001 0030)

LPC2141/2/4/6/8's U1TER enables implementation of software and hardware flow control.
When TXEn=1, UART1 transmitter will keep sending data as long as they are available.
As soon as TXEn becomes 0, UART1 transmission will stop.
Table 131
User manual
'A' (0x41) or 'a' (0x61)
start bit0 bit1 bit2
Start bit
16 cycles
a) Mode 0 (Start bit and LSB are used for auto-baud)
'A' (0x41) or 'a' (0x61)
start bit0 bit1 bit2
Start bit
16 cycles
b) Mode 1 (only Start bit is used for auto-baud)
describes how to use TXEn bit in order to achieve software flow control.
Rev. 01 — 15 August 2005
bit3 bit4 bit5 bit6
LSB of 'A' or 'a'
16 cycles
bit3 bit4 bit5 bit6
LSB of 'A' or 'a'
UM10139
Chapter 10: UART1
bit7 parity stop
bit7 parity stop
© Koninklijke Philips Electronics N.V. 2005. All rights reserved.
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