Texas Instruments AM335 Series Technical Reference Manual

www.ti.com I2C Registers
21.4.1.30 I2C_ACTOA Register (offset = D0h) [reset = 0h]
I2C_ACTOA is shown in Figure 21-45 and described in Table 21-38.
This read-only register is used to indicate which one of the module s four own addresses the external
master used when addressing the module. The CPU can read this register when the AAS indication was
activated. The indication is cleared at the end of the transfer.
Figure 21-45. I2C_ACTOA Register
31 30 29 28 27 26 25 24
Reserved
R-0h
23 22 21 20 19 18 17 16
Reserved
R-0h
15 14 13 12 11 10 9 8
Reserved
R-0h
7 6 5 4 3 2 1 0
Reserved OA3_ACT OA2_ACT OA1_ACT OA0_ACT
R-0h R-0h R-0h R-0h R-0h
LEGEND: R/W = Read/Write; R = Read only; W1toCl = Write 1 to clear bit; -n = value after reset
Table 21-38. I2C_ACTOA Register Field Descriptions
Bit Field Type Reset Description
31-4 Reserved R 0h
3 OA3_ACT R 0h Own address 3 active.
When a bit location is set to 1 by the core, it signalizes to the Local
Host that an external master using the corresponding own address
addressed the module.
Value after reset is low.
0x0 = Own address inactive
0x1 = Own address active
2 OA2_ACT R 0h Own address 2 active.
When a bit location is set to 1 by the core, it signalizes to the Local
Host that an external master using the corresponding own address
addressed the module.
Value after reset is low.
0x0 = Own address inactive
0x1 = Own address active
1 OA1_ACT R 0h Own address 1 active.
When a bit location is set to 1 by the core, it signalizes to the Local
Host that an external master using the corresponding own address
addressed the module.
Value after reset is low.
0x0 = Own address inactive
0x1 = Own address active
0 OA0_ACT R 0h Own address 0 active.
When a bit location is set to 1 by the core, it signalizes to the Local
Host that an external master using the corresponding own address
addressed the module.
Value after reset is low.
0x0 = Own address inactive
0x1 = Own address active
3765
SPRUH73H–October 2011–Revised April 2013 I2C
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Texas Instruments AM335 Series Specifications

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Brand	Texas Instruments
Model	AM335 Series
Category	Computer Hardware
Language	English