iSystem iC5500 - Page 33

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 20-pin 1.27mm Cortex Debug Cable Adapter
Ordering code
IC50118-1
Note: This product is obsolete and is fully replaced with IC50118
This adapter is used to connect the iC5000 / iC5500 / iC5700 development system to Cortex-M based target. It
connects to Debug/Trace module on one side and to the target debug connector on the other side. It can be used
for targets featuring 20-pin 1.27mm pitch target debug connector with Cortex-M pinout.
The following pinout is valid on the target side:
Signal
direction
Signal description
Signal
Pin
Pin
Signal
Signal description
Signal
direction
I
Reference voltage
VTref
1
2
SWDIO / TMS
SWD/JTAG
I/O / O
Ground
GND
3
4
SWCLK / TCK
SWD/JTAG
O
Ground
GND
5
6
SWO / TDO
SWD/JTAG
I
Not connected
KEY
7
8
NC / TDI
SWD/JTAG
O
Ground
GND
9
10
nSRST
System Reset
I/O
NC_CAPGND
11
12
TRCLK
Trace Clock
I
NC_CAPGND
13
14
TRD0
Trace Data 0
I
Ground
GND
15
16
TRD1
Trace Data 1
I
Ground
GND
17
18
TRD2
Trace Data 2
I
Ground
GND
19
20
TRD3
Trace Data 3
I
20-pin Cortex-M pinout
Blue colored signals are required for trace.
Note: 20-pin 1.27mm Cortex-M Cable Adapter features resettable fuses on pins 1, 2, 4, 6, 8 and 10. These
protect debug signals against overcurrent and cycle back to a conductive state after the excessive current fades
away. Signals on pins 12, 14, 16, 18 and 20 are protected via 100 ohm serial resistors.
The adapter connects to the target via a 20-pin 1.27mm connector (for example SAMTEC: FFSD-10-01-N). A
target should feature a matching part (for example SAMTEC: FTSH-110-01-F-DV-K).
Note: New adapter has been introduced increasing the number of plug/unplug cycles. With the old adapter, users
excessively plugging/unplugging the adapter over a longer period have been reporting connection failures of the
adapter. 1.27 mm pitch flat cable and also the connector have their limits in terms of mechanical strength and
allowed abuse. With the new adapter, user should no longer hold and pull the flat cable directly, which should
yield improved robustness. In case that this adapter cannot be connected to the target debug connector due to the
physically restricted space above the target, old adapter type can still be ordered on a custom request.