Altera cyclone V Technical Reference page 3435

cv_5v4
2016.10.28
Bit
21
Arb
20
Control
19
ClrIntPnd
18
TxRqstNewDat
17
DataA
16
DataB
CAN Controller
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Name
Write Direction: 0= Arbitration bits unchanged. 1=
transfer Identifier + Dir + Xtd + MsgVal to Message
Object. Read Direction: 0= Arbitration bits
unchanged. 1= transfer Identifier + Dir + Xtd +
MsgVal to IFxARB Register.
Write Direction: 0= Control Bits unchanged. 1=
transfer Control Bits to Message Object. Note: If
IFxCMR.TxRqst/NewDat bit is set, bits
IFxMCTR.TxRqst and IFxMCTR.NewDat will be
ignored. Read Direction: 0= Control Bits unchanged.
1= transfer Control Bits to IFxMCTR Register.
Write Direction: Has no influence to Message Object
at write transfer. Note: When writing to a Message
Object, this bit is ignored and copying of IntPnd flag
from IFx Control Register to Message RAM could
only be controlled by IFxMTR.IntPnd bit. Read
Direction: 0= IntPnd bit remains unchanged. 1= clear
IntPnd bit in the Message Object.
Write Direction: 0= TxRqst and NewDat bit will be
handled according IFxMCTR.NewDat bit and
IFxMCTR.TxRqst bit. 1= set TxRqst and NewDat in
Message Object to one Note: If a CAN transmission is
requested by setting IFxCMR.TxRqst/NewDat, the
TxRqst and NewDat bits in the Message Object will
be set to one independently of the values in
IFxMCTR. Read Direction: 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 IFxMCTR always reflect the status before
resetting them.
Write Direction: 0= Data Bytes 0-3 unchanged. 1=
transfer Data Bytes 0-3 to Message Object. Read
Direction: 0= Data Bytes 0-3 unchanged. 1= transfer
Data Bytes 0-3 to IFxDA.
Write Direction: 0= Data Bytes 4-7 unchanged. 1=
transfer Data Bytes 4-7 to Message Object. Read
Direction: 0= Data Bytes 4-7 unchanged. 1= transfer
Data Bytes 4-7 to IFxDB. Note: The speed of the
message transfer does not depend on how many bytes
are transferred.
Description
25-223
IF2CMR
Access Reset
RW 0x0
RW 0x0
RW 0x0
RW 0x0
RW 0x0
RW 0x0
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