SAM9M10_14 Datasheet, PDF (579/1385 Pages) ATMEL Corporation – Atmel | SMART ARM-based Embedded MPU

31.11.2 TWI Master Mode Register
Name:
TWI_MMR
Addresses: 0xFFF84004 (0), 0xFFF88004 (1)
Access:
Read-write
Reset:
0x00000000
31
30
29
28
27
26
25
24
–
–
–
–
–
–
–
–
23
22
21
20
19
18
17
16
–
DADR
15
14
13
12
11
10
–
–
–
MREAD
–
–
9
8
IADRSZ
7
6
5
4
3
2
1
0
–
–
–
–
–
–
–
–
• IADRSZ: Internal Device Address Size
IADRSZ[9:8]
0
0
0
1
1
0
1
1
No internal device address
One-byte internal device address
Two-byte internal device address
Three-byte internal device address
• MREAD: Master Read Direction
0 = Master write 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.
SAM9M10 [DATASHEET]
Atmel-6355G-ATARM-SAM9M10-Datasheet_02-Sept-14
579