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AT91SAM9261S_14 Datasheet, PDF (386/709 Pages) ATMEL Corporation – Incorporates the ARM926EJ-S ARM Thumb Processor | |||
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31.7.2 TWI Master Mode Register
Register Name:
TWI_MMR
Address Type:
Read-write
31
30
29
28
27
26
â
â
â
â
â
â
23
22
21
20
19
18
â
DADR
15
14
13
12
11
10
â
â
â
MREAD
â
â
7
6
5
4
3
2
â
â
â
â
â
â
⢠IADRSZ: Internal Device Address Size
Table 31-5.
IADRSZ[9:8]
0
0
0
1
1
0
1
1
No internal device address (Byte command protocol)
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.
25
24
â
â
17
16
9
8
IADRSZ
1
0
â
â
386 AT91SAM9261S
6242EâATARMâ11-Sep09
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