STMicroelectronics STM32F405 Reference Manual page 855

RM0090
2
27.6.3 I C Own address register 1 (I2C_OAR1)
Address offset: 0x08
Reset value: 0x0000
15 14 13 12
ADD
MODE
Reserved
rw
Bit 15 ADDMODE Addressing mode (slave mode)
Bit 14
Bits 13:10
Bits 9:8 ADD[9:8]: Interface address
Bits 7:1 ADD[7:1]: Interface address
Bit 0 ADD0: Interface address
2
27.6.4 I C Own address register 2 (I2C_OAR2)
Address offset: 0x0C
Reset value: 0x0000
15 14 13 12
Reserved
Bits 15:8 Reserved, must be kept at reset value
Bits 7:1 ADD2[7:1]: Interface address
bits 7:1 of address in dual addressing mode
Bit 0 ENDUAL: Dual addressing mode enable
0: Only OAR1 is recognized in 7-bit addressing mode
1: Both OAR1 and OAR2 are recognized in 7-bit addressing mode
11 10 9
ADD[9:8]
rw
0: 7-bit slave address (10-bit address not acknowledged)
1: 10-bit slave address (7-bit address not acknowledged)
Should always be kept at 1 by software.
Reserved, must be kept at reset value
7-bit addressing mode: don't care
10-bit addressing mode: bits9:8 of address
bits 7:1 of address
7-bit addressing mode: don't care
10-bit addressing mode: bit 0 of address
11 10 9
DocID018909 Rev 11
Inter-integrated circuit (I
8 7 6
rw rw rw rw
8 7 6 5
rw rw rw
5 4 3 2
ADD[7:1]
rw rw rw
4 3 2
ADD2[7:1]
rw rw rw
2
C) interface
1 0
ADD0
rw rw
1 0
ENDUAL
rw rw
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