Datasheet

Bits Name Description Type Reset
14 ABRT_SLV_ARBLO
ST
This field indicates that a Slave has lost the bus while
transmitting data to a remote master.
IC_TX_ABRT_SOURCE[12] is set at the same time. Note:
Even though the slave never 'owns' the bus, something
could go wrong on the bus. This is a fail safe check. For
instance, during a data transmission at the low-to-high
transition of SCL, if what is on the data bus is not what is
supposed to be transmitted, then DW_apb_i2c no longer
own the bus.
Reset value: 0x0
Role of DW_apb_i2c: Slave-Transmitter
0x0 -> Slave lost arbitration to remote master- scenario not
present
0x1 -> Slave lost arbitration to remote master
RO 0x0
13 ABRT_SLVFLUSH_
TXFIFO
This field specifies that the Slave has received a read
command and some data exists in the TX FIFO, so the
slave issues a TX_ABRT interrupt to flush old data in TX
FIFO.
Reset value: 0x0
Role of DW_apb_i2c: Slave-Transmitter
0x0 -> Slave flushes existing data in TX-FIFO upon getting
read command- scenario not present
0x1 -> Slave flushes existing data in TX-FIFO upon getting
read command
RO 0x0
12 ARB_LOST This field specifies that the Master has lost arbitration, or if
IC_TX_ABRT_SOURCE[14] is also set, then the slave
transmitter has lost arbitration.
Reset value: 0x0
Role of DW_apb_i2c: Master-Transmitter or Slave-
Transmitter
0x0 -> Master or Slave-Transmitter lost arbitration-
scenario not present
0x1 -> Master or Slave-Transmitter lost arbitration
RO 0x0
11 ABRT_MASTER_DI
S
This field indicates that the User tries to initiate a Master
operation with the Master mode disabled.
Reset value: 0x0
Role of DW_apb_i2c: Master-Transmitter or Master-
Receiver
0x0 -> User initiating master operation when MASTER
disabled- scenario not present
0x1 -> User intitating master operation when MASTER
disabled
RO 0x0
RP2040 Datasheet
4.4. I2C 516