NXP Semiconductors K32 L2A Series, Reference Manual, Page: 900 / 1379

NOTE
The format of this mask field is different than
MTBDWT_MASKn[MASK].
Address: F000_0000h base + 4h offset = F000_0004h
Bit 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
R
EN
0
W
Reset 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
Bit
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
R
0
HALTREQ
RAMPRIV
SFRWPRIV
TSTOPEN
TSTARTEN
MASK
W
Reset 0 0 0 0 0 0 0 0 1 0 0 x* x* x* x* x*
* Notes:
x = Undefined at reset. •
MTBx_MASTER field descriptions
Field Description
31
EN
Main Trace Enable
When this field is 1, trace data is written into the RAM memory location addressed by
MTB_POSITION[POINTER]. The MTB_POSITION[POINTER] value auto increments after the trace data
packet is written.
EN can be automatically set to 0 using the MTB_FLOW[WATERMARK] field and the
MTB_FLOW[AUTOSTOP] bit.
EN is automatically set to 1 if TSTARTEN is 1 and the TSTART signal is HIGH.
EN is automatically set to 0 if TSTOPEN is 1 and the TSTOP signal is HIGH.
NOTE: If EN is set to 0 because MTB_FLOW[WATERMARK] is set, then it is not automatically set to 1 if
TSTARTEN is 1 and the TSTART input is HIGH. In this case, tracing can only be restarted if
MTB_FLOW[WATERMARK] or MTB_POSITION[POINTER] value is changed by software.
30–10
Reserved
This field is reserved.
This read-only field is reserved and always has the value 0.
9
HALTREQ
Halt Request
This field is connected to the halt request signal of the trace logic, EDBGRQ. When HALTREQ is set to 1,
the EDBFGRQ is asserted if DBGEN (invasive debug enable, one of the debug authentication interface
signals) is also HIGH. HALTREQ can be automatically set to 1 using MTB_FLOW[WATERMARK].
8
RAMPRIV
RAM Privilege
If this field is 0, then user or privileged AHB read and write accesses to the RAM are permitted. If this field
is 1, then only privileged AHB read and write accesses to the RAM are permitted and user accesses are
RAZ/WI. The HPROT[1] signal determines if an access is a user or privileged mode reference.
Table continues on the next page...
Memory map and register definition
K32 L2A Reference Manual, Rev. 2, 01/2020
900 NXP Semiconductors