Datasheet

Bits Name Description Type Reset
15 ABRT_SLVRD_INT
X
1: When the processor side responds to a slave mode
request for data to be transmitted to a remote master and
user writes a 1 in CMD (bit 8) of IC_DATA_CMD register.
Reset value: 0x0
Role of DW_apb_i2c: Slave-Transmitter
0x0 → Slave trying to transmit to remote master in read
mode- scenario not present
0x1 → Slave trying to transmit to remote master in read
mode
RO 0x0
14 ABRT_SLV_ARBL
OST
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
RP2040 Datasheet
4.3. I2C 512