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A.2.2. ATB slave interface signals

Trace input stream. Table A.3 shows the ATB slave interface signals.

Table A.3. ATB slave interface signals

Signal

Type

Description

ATVALIDS

Input

Valid signals in this cycle from the trace source

ATREADYS

Output

If there is valid data, that is, ATVALID HIGH, the data was accepted this cycle

ATIDS[6:0]

Input

Trace source ID

ATBYTESS[a]

Input

Number of valid bytes on ATDATA, minus one
ATDATAS[b]

Input

Trace data, LSB aligned

AFVALIDS

Output

Any data remaining in any buffers must be flushed

AFREADYS

Input

Data flush complete, AFVALID can be deasserted

[a] The width is dependent on the configured ATB width:

[1:0]

32-bit ATB.

[2:0]

64-bit ATB.

[3:0]

128-bit ATB.

[b] The width is dependent on the configured ATB width:

[31:0]

32-bit ATB

[63:0]

64-bit ATB

[127:0]

128-bit ATB


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