Atmel Evaluation Kit for AT32uC3A0512, 32-Bit AVR Microcontroller Atmel ATEVK1105 ATEVK1105 데이터 시트
제품 코드
ATEVK1105
248
AT32UC3A
24.14.3
TWI Master Mode Register
Name:
MMR
Access:
Read-write
Reset Value:
0x00000000
• IADRSZ: Internal Device Address Size
• MREAD: Master Read Direction
0 = Master write direction.
1 = Master read direction.
1 = Master read direction.
• DADR: Device Address
The device address is used to access slave devices in read or write mode. Those bits are only used in Master mode.
31
30
29
28
27
26
25
24
–
–
–
–
–
–
–
–
23
22
21
20
19
18
17
16
–
DADR
15
14
13
12
11
10
9
8
–
–
–
MREAD
–
–
IADRSZ
7
6
5
4
3
2
1
0
–
–
–
–
–
–
–
–
IADRSZ[9:8]
Description
0
0
No internal device address
0
1
One-byte internal device address
1
0
Two-byte internal device address
1
1
Three-byte internal device address
32058K AVR32-01/12