Technical Reference Manual 002-29852 Rev. *B
Bits Name SW HW Default or
Enum
Description
0:31 DATA
R W Undefined
transfer. The descriptor type can be single, 1D or 2D.'1': A t
rigger
results in the execution of a single 1D
transfer.
the descriptor type):
'0': A trigger results in the execution of a single
[7:6] TR_IN_TYPE
Specifies the input trigger type (not to be confused with
[5:4] TR_OUT_TYPE
Specifies when an output trigger is generated:
'0': An output trigger is generated after a single
transfer.
'1': An output trigger is generated after a single 1D
transfer.
- If the descriptor type is 'single', the output trigger is
generated after a single transfer.
- If the descriptor type is '1D', 'CRC' or '2D', the outputtrigger i
s generated after the execution of a 1D
transfer.
'2': An output trigger is generated after the execution ofthe cu
rrent descriptor.
'3': An output trigger is generated after the execution ofa desc
riptor list: after the execution of the current
descriptor AND the current descriptor
DESCR_NEXT_PTR.ADDR is '0'.
[3:2] INTR_TYPE
Specifies the input trigger type (not to be confused with
the descriptor type):
'0': A trigger results in the execution of a single
transfer. The descriptor type can be single, 1D or 2D.'1': A
trigger results in the execution of a single 1D
transfer.
- If the descriptor type is 'single', the trigger results in the
execution of a single transfer.
- If the descriptor type is '1D' or '2D', the trigger results in the
execution of a 1D transfer.
'2': A trigger results in the execution of the current
descriptor.
'3': A trigger results in the execution of the current
descriptor and continues (without requiring another
input trigger) with the execution of the next descriptor using
the next descriptor's information.
[1:0] WAIT_FOR_DEACT
Specifies whether the controller should wait for the
input trigger to be deactivated; i.e. the selected system
trigger is not active. This field is used to synchronize
the controller with the agent that generated the trigger.
This field is ONLY used at the completion of the
transfer as specified by TR_IN. E.g., a TX FIFO
indicates that it is empty and it needs a new data
sample. The agent removes the trigger ONLY when
the data sample has been written by the controller
AND received by the agent. Furthermore, the agent's trigger
may be delayed by a few cycles before it
reaches the controller. This field is used for level
sensitive trigger, which reflect state (pulse sensitive
triggers should have this field set to '0'). The wait
cycles incurred by this field reduce DW controller
performance.
'0': Do not wait for trigger de-activation (for pulse
sensitive triggers).
'1': Wait for up to 4 cycles.
'2': Wait for up to 16 cycles.
'3': Wait indefinitely. This option may result in controller
lockup if the trigger is not de-activated.
Copy of DESCR_CTL of the currently active descriptor.
TRAVEO™ T2G Automotive MCU: TVII-B-E-4M body controller entry registers
To Next Page
Loading...
