Technical Reference Manual
002-29852 Rev. *B
Bits Name
SW
HW
Default or
Enum
Description
2
B
RW
R
Undefined
Non-bufferable/bufferable access control:
'0': non-bufferable.
'1': bufferable.
This field is used to indicate to an AMBA bridge that a
write transaction can complete without waiting for the
destination to accept the write transaction data.
All transactions for this channel uses the B field for the
non-bufferable/bufferable access control ('hprot[2]').
4:7
PC
RW
R
Undefined
Protection context.
This field is set with the protection context of the
transaction that writes this register; i.e. the 'write data'
is ignored and instead the context is inherited from the
write transaction (note the field attributes should be
HW:RW, SW:R).
All transactions for this channel uses the PC field for
the protection context.
8:9
PRIO
RW
R
0
Channel priority:
'0': highest priority.
'1'
'2'
'3': lowest priority.
Channels with the same priority constitute a priority
group. Priority decoding determines the highest priority
pending channel. This channel is determined as
follows. First, the highest priority group with pending
channels is identified. Second, within this priority
group, round robin arbitration is applied. Round robin
arbitration (within a priority group) gives the highest
priority to the lower channel indices (within the priority
group).
11
PREEMPTABLE
RW
R
Undefined
Specifies if the channel is preemptable.
'0': Not preemptable.
'1': Preemptable. This field allows higher priority
pending channels (from a higher priority group; i.e. an
active channel can NOT be preempted by a pending
channel in the same priority group) to preempt the
active channel in between 'single transfers' (a 1D
transfer consists out of X_COUNT single transfers; a
2D transfer consists out of X_COUNT*Y_COUNT
single transfers). Preemption will NOT affect the
pending status of channel. As a result, after completion
of a higher priority activated channel, the current
channel may be reactivated.
31
ENABLED
RW
RW1C
0
Channel enable:
'0': Disabled. The channel's trigger is ignored and the
channel cannot be made pending and therefore cannot
be made active. If a pending channel is disabled, the
channel is made non pending. If the activate channel is
disabled, the channel is de-activated (bus transactions
are completed).
'1': Enabled.
SW sets this field to '1' to enable a specific channel.
HW sets this field to '0' on an error interrupt cause (the
specific error is specified by
CH_STATUS.INTR_CAUSE).
880
2022-04-18
TRAVEO™ T2G Automotive MCU: TVII-B-E-4M body controller entry registers