A.7.2. JTAG and SWD signals
The table below lists the interface signals for the JTAG and
SWD subsystem.
Table A.17. JTAG and SW Debug access functional signals
Name | Direction | Width | Description |
---|
DAPSWDITMS | Input | 1 | Debug TMS. |
DAPSWDO | Output | 1 | Serial Wire Data Out. |
DAPSWDOEN | Output | 1 | Serial Wire Output Enable. |
DAPTDI | Input | 1 | Debug TDI. |
DAPTDO | Output | 1 | Debug TDO. |
DAPNTDOEN | Output | 1 | TDO output pad control signal. |
DAPJTAGNSW | Output | 1 | JTAG or Serial-Wire selection JTAG mode(1)
or SW mode(0). |
DAPJTAGTOP | Output | 1 | JTAG-DP TAP controller in one of four top states
TLR, RTI, Sel-DR, Sel-IR. |