AT91SAM7S32-AI ATMEL [ATMEL Corporation], AT91SAM7S32-AI Datasheet - Page 258

• Manufacturer Part Number: AT91SAM7S32-AI
• Description: AT91 ARM Thumb-based Microcontrollers
• Manufacturer: ATMEL [ATMEL Corporation]

TWI Master Mode Register
Register Name:
Address Type:
• IADRSZ: Internal Device Address Size
• MREAD: Master Read Direction
0 = Master write direction.
1 = Master read direction.
• DADR: Device Address
The device address is used in Master Mode to access slave devices in read or write mode.
258
31
23
15
–
–
–
7
–
0
0
1
1
AT91SAM7S32 Preliminary
IADRSZ[9:8]
30
22
14
TWI_MMR
Read/Write
–
–
6
–
0
1
0
1
No internal device address
One-byte internal device address
Two-byte internal device address
Three-byte internal device address
29
21
13
–
–
5
–
MREAD
28
20
12
–
4
–
DADR
27
19
11
–
–
3
–
26
18
10
–
–
2
–
25
17
–
9
1
–
IADRSZ
6071A–ATARM–28-Oct-04
24
16
–
8
0
–