NUC970 Technical Reference Manual
Publication Release Date: Dec. 15, 2015
- 814 -
Revision V1.30
NUC97
0
T
E
CHNIC
A
L
RE
F
E
RE
N
CE
MA
NUA
L
1 = Transfer Control Bits to Message Object.
Direction = Read.
0 = Control Bits unchanged.
1 = Transfer Control Bits to IFn Message Buffer Register.
[3]
ClrIntPnd
Clear Interrupt Pending Bit
Direction = Write.
When writing to a Message Object, this bit is ignored.
Direction = Read.
0 = IntPnd bit remains unchanged.
1 = Clear IntPnd bit in the Message Object.
[2]
TxRqst/NewDat
Access Transmission Request Bit when Direction = Write.
0 = TxRqst bit unchanged.
1 = Set TxRqst bit.
Note:
If a transmission is requested by programming bit TxRqst/NewDat in the IFn
Command Mask Register, bit TxRqst in the IFn Message Control Register will be ignored.
Access New Data Bit when Direction = Read.
0 = NewDat bit remains unchanged.
1 = Clear NewDat bit in the Message Object.
Note:
A read access to a Message Object can be combined with the reset of the control bits
IntPnd and NewDat. The values of these bits transferred to the IFn Message Control
Register always reflect the status before resetting these bits.
[1]
DAT_A
Access Data Bytes [3:0]
Direction = Write.
0 = Data Bytes [3:0] unchanged.
1 = Transfer Data Bytes [3:0] to Message Object.
Direction = Read.
0 = Data Bytes [3:0] unchanged.
1 = Transfer Data Bytes [3:0] to IFn Message Buffer Register.
[0]
DAT_B
Access Data Bytes [7:4]
Direction = Write.
0 = Data Bytes [7:4] unchanged.
1 = Transfer Data Bytes [7:4] to Message Object.
Direction = Read.
0 = Data Bytes [7:4] unchanged.
1 = Transfer Data Bytes [7:4] to IFn Message Buffer Register.