AT91M40400 View Datasheet(PDF) - Atmel Corporation
Part Name
Description
MFG CO.
'AT91M40400' PDF : 116 Pages View PDF
USART Mode Register
Name:
Access Type:
US_MR
Read/Write
31
30
29
28
27
---
---
---
---
---
23
22
21
20
19
---
---
---
---
---
15
14
13
12
11
CHMODE
NBSTOP
7
6
CHRL
5
4
3
USCLKS
---
• USCLKS: Clock Selection (Baud Rate Generator Input Clock)
USCLKS
0
0
0
1
1
X
Selected Clock
MCKI
MCKI/8
External (SCK)
• CHRL: Character Length
CHRL
0
0
0
1
1
0
1
1
Character Length
Five bits
Six bits
Seven bits
Eight bits
Start, stop and parity bits are added to the character length.
• SYNC: Synchronous Mode Select
0 = USART operates in Asynchronous Mode.
1 = USART operates in Synchronous Mode.
• PAR: Parity Type
PAR
Parity Type
0
0
0 Even Parity
0
0
1 Odd Parity
0
1
0 Parity forced to 0 (Space)
0
1
1 Parity forced to 1 (Mark)
1
0
x No parity
1
1
x Multi-drop mode
AT91M40400
26
25
24
---
---
---
18
17
16
CLKO
---
---
10
9
8
PAR
SYNC
2
1
0
---
---
---
73
Share Link: 
