Texas Instruments OMAP5912 Reference Manual page 1136

Transmit Underflow (XUDF)
Address As Slave (AAS)
General Call (GC)
SPRU760B
0: Normal operation
-
1: Receiver overrun
-
Value after reset is low.
Transmit mode only.
This read-only bit indicates whether the transmitter has experienced
underflow.
In the master transmit mode, underflow occurs when the shift register is empty,
the transmit FIFO is empty, and there are still some bytes to transmit
(DCOUNT ≠ 0).
In the slave transmit mode, underflow occurs when the shift register is empty,
the transmit FIFO is empty, and there are still some bytes to transmit (read
request from external I
XUDF is set to 1 when the I
line till the underflow cause disappears.
XUDF is clear when writing the I2C_DATA register or resetting the I
(I2C_CON:I2C_EN = 0).
0: Normal operation
-
1: Transmit underflow
-
Value after reset is low.
The device sets this bit to 1 when it recognizes its own slave address or an
address of all zeros (8 bits). The AAS bit is reset to 0 by restart or stop.
0: No action
-
1: Address as slave
-
Value after reset is low.
The device sets this read-/clear-only bit to1 if it detects the address of all zeros
(8 bits), that is, general call.
2
C master).
2
C recognizes an underflow. The core holds the
I2C Multimaster Peripheral
Serial Interfaces
2
C
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