at91sam9g20-cu ATMEL Corporation, at91sam9g20-cu Datasheet - Page 446
at91sam9g20-cu
Manufacturer Part Number
at91sam9g20-cu
Description
At91 Arm Thumb Microcontrollers
Manufacturer
ATMEL Corporation
Datasheet
1.AT91SAM9G20-CU.pdf
(814 pages)
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31.10.3
Name:
Access:
Reset Value: 0x00000000
• SADR: Slave Address
The slave device address is used in Slave mode in order to be accessed by master devices in read or write mode.
SADR must be programmed before enabling the Slave mode or after a general call. Writes at other times have no effect.
31.10.4
Name:
Access:
Reset Value: 0x00000000
• IADR: Internal Address
0, 1, 2 or 3 bytes depending on IADRSZ.
446
31
23
15
31
23
15
–
–
–
7
–
–
7
AT91SAM9G20 Preliminary
TWI Slave Mode Register
TWI Internal Address Register
TWI_SMR
Read-write
TWI_IADR
Read-write
30
22
14
30
22
14
–
–
6
–
–
6
29
21
13
29
21
13
–
–
5
–
–
5
28
20
12
28
20
12
–
–
4
–
–
4
IADR
IADR
IADR
SADR
27
19
11
27
19
11
–
–
3
–
–
3
26
18
10
26
18
10
–
–
2
–
–
2
25
17
25
17
–
9
1
–
–
9
1
6384B–ATARM–15-Dec-08
24
16
24
16
–
8
0
–
–
8
0
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