22.4.2 I2Cx Status Register


Bit	31	30	29	28	27	26	25	24

Access
Reset


Bit	23	22	21	20	19	18	17	16

Access
Reset


Bit	15	14	13	12	11	10	9	8
	ACKSTAT	TRSTAT	ACKTIM			BCL	GCSTAT	ADD10
Access	R/HSC	R/HSC	R/HSC			R/C/HSC	R/HSC	R/HSC
Reset	0	0	0			0	0	0


Bit	7	6	5	4	3	2	1	0
	IWCOL	I2COV	D/A	P	S	R/W	RBF	TBF
Access	R/C/HS	R/C/HS	R/HSC	R/HSC	R/HSC	R/HSC	R/HSC	R/HSC
Reset	0	0	0	0	0	0	0	0

Bit 15 – ACKSTAT Acknowledge Status bit (updated in all Host and Client modes)

Value	Description
`1`	Acknowledge was not received from client.
`0`	Acknowledge was received from client.

Bit 14 – TRSTAT Transmit Status bit (when operating as I²C host; applicable to host transmit operation)

Value	Description
`1`	Host transmit is in progress (eight bits + ACK).
`0`	Host transmit is not in progress.

Bit 13 – ACKTIM Acknowledge Time Status bit (valid in I²C Client mode only)

Value	Description
`1`	Indicates I²C bus is in an Acknowledge sequence, set on eighth falling edge of SCLx clock.
`0`	Not an Acknowledge sequence, cleared on ninth rising edge of SCLx clock.

Bit 10 – BCL Bus Collision Detect bit

(Host/Client mode; cleared when I²C module is disabled, I2CEN = 0)

Value	Description
`1`	A bus collision has been detected during a host or client transmit operation.
`0`	No bus collision has been detected.

Bit 9 – GCSTAT General Call Status bit (cleared after Stop detection)

Value	Description
`1`	General call address was received.
`0`	General call address was not received.

Bit 8 – ADD10 10-Bit Address Status bit (cleared after Stop detection)

Value	Description
`1`	10-bit address was matched.
`0`	10-bit address was not matched.

Bit 7 – IWCOL I2Cx Write Collision Detect bit

Value	Description
`1`	An attempt to write to the I2CxTRN register failed because the I²C module is busy; must be cleared in software.
`0`	No collision

Bit 6 – I2COV I2Cx Receive Overflow Flag bit

Value	Description
`1`	A byte was received while the I2CxRCV register is still holding the previous byte.
`0`	No overflow

Bit 5 – D/A Data/Address bit (when operating as I²C Client)

Value	Description
`1`	Indicates that the last byte received was data.
`0`	Indicates that the last byte received or transmitted was an address.

Bit 4 – P Stop bit

Updated when Start, Reset or Stop is detected; cleared when the I²C module is disabled, I2CEN = 0.

Value	Description
`1`	Indicates that a Stop bit has been detected last.
`0`	Stop bit was not detected last.

Bit 3 – S I2Cx Start bit

Updated when Start, Reset or Stop is detected; cleared when the I²C module is disabled, I2CEN = 0.

Value	Description
`1`	Indicates that a Start (or Repeated Start) bit has been detected last.
`0`	Start bit was not detected last.

Bit 2 – R/W Read/Write Information bit (when operating as I²C Client)

Value	Description
`1`	Read: Indicates the data transfer is the output from the client.
`0`	Write: Indicates the data transfer is the input to the client.

Bit 1 – RBF Receive Buffer Full Status bit

Value	Description
`1`	Receive is complete; I2CxRCV is full.
`0`	Receive is not complete; I2CxRCV is empty.

Bit 0 – TBF Transmit Buffer Full Status bit

Value	Description
`1`	Transmit is in progress; I2CxTRN is full (eight bits of data).
`0`	Transmit is complete; I2CxTRN is empty.

Name:	I2CxSTAT1
Offset:	0x1884, 0x18D4, 0x1924