XE8805 SEMTECH [Semtech Corporation], XE8805 Datasheet - Page 75

• Manufacturer Part Number: XE8805
• Description: Data Acquisition MCU
• Manufacturer: SEMTECH [Semtech Corporation]

14.1 Features
14.2 Overview
The UART pins are PB[7], which is used as Rx - receive and PB[6] as Tx - transmit.
14.3 Registers map
© Semtech 2006
•
•
•
•
•
•
•
•
•
•
pos.
Pos.
pos.
5-3
2-0
7-0
Full duplex operation with buffered receiver and transmitter.
Internal baud rate generator with 12 programmable baud rates (300 - 115200).
7 or 8 bits word length.
Even, odd, or no-parity bit generation and detection
1 stop bit
Error receive detection: Start, Parity, Frame and Overrun
Receiver echo mode
2 interrupts (receive full and transmit empty)
Enable receive and/or transmit
Invert pad Rx and/or Tx
7
6
2
1
0
7
6
5
4
3
UartRcSel(2:0)
RegUartCmd
RegUartCtrl
UartBR(2:0)
RegUartTx
UartEnRx2
UartEnRx1
UartEcho
UartEnTx
UartXRx
UartXTx
UartPM
UartWL
UartPE
SelXtal
UartTx
rw
rw
rw
rw
rw
rw
rw
rw
rw
rw
rw
rw
rw
rw
rw
rw
000 resetsystem
101 resetsystem
0 resetsystem
0 resetsystem
0 resetsystem
1 resetsystem
0 resetsystem
0 resetsystem
0 resetsystem
0 resetsystem
0 resetsystem
0 resetsystem
resetsystem
Table 14-1: RegUartCmd
Table 14-2: RegUartCtrl
00000000
Table 14-3: RegUartTx
Reset
reset
reset
14-2
Enable parity: 1 = with parity, 0 = no parity
Select word length: 1 = 8 bits, 0 = 7 bits
Select parity mode: 0 = odd, 1 = even
Select input clock: 0 = RC, 1 = xtal
1 = echo Rx->Tx, 0 = no echo
Enable uart transmission
Enable Uart Reception
RC prescaler selection
Enable uart reception
Enable echo mode:
Select baud rate
Data to be sent
Invert pad Rx
Invert pad Tx
Description
Description
Description
XE8805/05A
www.semtech.com