Typical Swd Circuit; Figure 1-17 Typical Swd Circuit - ARM DSTREAM-PT Reference Manual

1.9

Typical SWD circuit

A typical SWD circuit:
To improve signal integrity, it is good practice to provide an impedance-matching resistor on the
SWDIO and SWO outputs of the processor. The value of these resistors, added to the impedance of the
driver, must be approximately equal to 50Ω.
101714_0100_02_en
Note
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Debug
Connector
VTREF
SWDIO
SWCLK
SWO
nSRST
GND
Non-Confidential
1 Debug and trace interface
1.9 Typical SWD circuit
VDD
10K 10K 10K
22R
SWDIO
SWCLK
SWO
22R
nRESET
10K

Figure 1-17 Typical SWD circuit

Target
Device
1-30