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Functional description
21.4.13 I2C Status register 2 (I2C_S2)
Address: 18B0h base + Ch offset = 18BCh
Bit
7
Read
0
Write
Reset
0
Field
7
This field is reserved.
Reserved
This read-only field is reserved and always has the value 0.
6
This field is reserved.
Reserved
This read-only field is reserved and always has the value 0.
5
This field is reserved.
Reserved
This read-only field is reserved and always has the value 0.
4
This field is reserved.
Reserved
This read-only field is reserved and always has the value 0.
3
This field is reserved.
Reserved
This read-only field is reserved and always has the value 0.
2
This field is reserved.
Reserved
This read-only field is reserved and always has the value 0.
1
Error flag
ERROR
Indicates if there are read or write errors with the Tx and Rx buffers.
0
The buffer is not full and all write/read operations have no errors.
1
There are 3 or more write/read errors during the data transfer phase (when the Empty flag is not set
and the buffer is busy).
0
Empty flag
EMPTY
Indicates if the Tx or Rx buffer is empty.
0
Tx or Rx buffer is not empty and cannot be written to, that is new data cannot be loaded into the
buffer.
1
Tx or Rx buffer is empty and can be written to, that is new data can be loaded into the buffer.
21.5 Functional description
This section provides a comprehensive functional description of the I2C module.
376
6
5
0
0
0
0
I2C_S2 field descriptions
MC9S08SU16 Reference Manual, Rev. 5, 4/2017
4
3
0
0
0
0
Description
2
1
0
ERROR
EMPTY
w1c
0
0
NXP Semiconductors
0
1
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