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Registers
3.1 I2C Own Address Register (ICOAR)
The I2C own address register (ICOAR) is used to specify its own slave address, which distinguishes it
from other slaves connected to the I2C-bus. If the 7-bit addressing mode is selected (XA = 0 in ICMDR),
only bits 6-0 are used; bits 9-7 are ignored.
The I2C own address register (ICOAR) is shown in Figure 13 and described in Table 5.
Figure 13. I2C Own Address Register (ICOAR)
31 16
Reserved
R-0
15 10 9 0
Reserved OADDR
R-0 R/W-0
LEGEND: R/W = Read/Write; R = Read only; -n = value after reset
Table 5. I2C Own Address Register (ICOAR) Field Descriptions
Bit Field Value Description
31-10 Reserved 0 These reserved bit locations are always read as zeros. A value written to this field has no effect.
9-0 OADDR 0-3FFh Own slave address. Provides the slave address of the I2C.
In 7-bit addressing mode (XA = 0 in ICMDR): bits 6-0 provide the 7-bit slave address of the I2C. Bits 9-7
are ignored.
In 10-bit addressing mode (XA = 1 in ICMDR): bits 9-0 provide the 10-bit slave address of the I2C.
23
SPRUEN0D–March 2011 Inter-Integrated Circuit (I2C) Peripheral
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