ARM Cortex-M3

Signal Descriptions
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A.13 AHB Trace Macrocell interface
Table A-13 lists the signals of the AHB Trace Macrocell (HTM) interface
Table A-13 HTM interface
Name Direction Description
HTMDHADDR[31:0] Output 32-bit address
HTMDHTRANS[1:0] Output Output indicates the type of the current data transfer. Can be IDLE,
NONSEQUENTIAL, OR SEQUENTIAL.
HTMDHSIZE[1:0] Output Indicates the size of the access. Can be 8, 16, or 32 bits.
HTMDHBURST[2:0] Output Output indicates if the transfer is part of a burst.
HTMDHPROT[3:0] Output Provides information on the access.
HTMDHWDATA[31:0] Output 32-bit write data bus.
HTMDHWRITE Output Write not read.
HTMDHRDATA[31:0] Output Read data bus.
HTMDHREADY Output Ready signal.
HTMDHRESP[1:0] Output The transfer response status. OKAY or ERROR.