8.2.2. Single target connector pinout

The pinout for a single-processor ETM target connector is shown in Table 8.3.

Table 8.3. Single target connector pinout

Pin

Signal name

Pin

Signal name

Pin

Signal name

Pin

Signal name

38

Trace signal 1

37

Trace signal 13

36

Trace signal 2

35

Trace signal 14

34

Trace signal 3

33

Trace signal 15

32

Trace signal 4

31

Trace signal 16

30

Trace signal 5

29

Trace signal 17

28

Trace signal 6

27

Trace signal 18

26

Trace signal 7

25

Trace signal 19

24

Trace signal 8

23

Trace signal 20

22

Trace signal 9

21

nTRST[a]

20

Trace signal 10

19

TDI[a]

18

Trace signal 11

17

TMS[a]

16

Trace signal 12

15

TCK[a]

14

VSupply[a]

13

RTCK[a]

12

VTRef

11

TDO[a]

10

EXTTRIG[a]

9

nSRST[a]

8

DBGACK[a]

7

DBGRQ[a]

6

TRACECLK

5

GND

4

No-connect

3

No-connect

2

No-connect

1

No-connect

----

[a] Run control signal.


Note

Pins 1, 2, 3, and 4 must be true no-connects. For designs with fewer than 16 trace data pins, pin 5 and any unused trace signal pins must be connected to ground on the target board.

Pipeline status seen by old TPAs, ETMv3.0 upwards

The pipeline status seen by old TPAs is listed in Table 8.4.

Table 8.4. Pipeline status seen by old TPAs

ETMv3.x  ETMv2.xETMv1.x
TRACECTLTRACEDATA[0]Simulated PIPESTAT[3:0]mnemonicmnemonic
0X[a]b010xWT/DWBE/BD
10b0110TRTR
11b0111TDTD

[a] Can be 0 or 1.


For more information on trigger and trace disabled conditions see Decoding required by trace capture devices

Wider trace ports, ETMv3.0 upwards

If you require a wider trace port than that shown in Single target connector pinout then a second connector must be used.

Up to 16 extra bits of TRACEDATA are supported on the second connector. If the second connector is used:

  • TRACEPKT[15:0] is equivalent to TRACEDATA[31:16]

  • PIPESTAT[3:0] is wired to b0100.

Table 8.5 shows the single target connector pinout for ETMv3.x.

Table 8.5. Second target connector pinout ETMv3.x

Pin

Signal name

Pin

Signal name

Pin

Signal name

38

TRACEDATA[16]

37

TRACEDATA[24]

36

Logic 0

35

TRACEDATA[25]

34

Logic 1

33

TRACEDATA[26]

32

Logic 0

31

TRACEDATA[27]

30

Logic 0

29

TRACEDATA[28]

28

TRACEDATA[17]

27

TRACEDATA[29]

26

TRACEDATA[18]

25

TRACEDATA[30]

24

TRACEDATA[19]

23

TRACEDATA[31]

22

TRACEDATA[20]

21

No-connect

20

TRACEDATA[21]

19

No-connect

18

TRACEDATA[22]

17

No-connect

16

TRACEDATA[23]

15

No-connect

14

No-connect

13

No-connect

12

VTRef

11

No-connect

10

No-connect

9

No-connect

8

No-connect

7

No-connect

6

TRACECLK

5

GND

4

No-connect

3

No-connect

2

No-connect

1

No-connect

--

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