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DACREF Datenblatt(PDF) 24 Page - ATMEL Corporation

Teilenummer DACREF
Bauteilbeschribung  32-Bit AVR UC3 C Series Schematic Checklist
PDF  30 Pages
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Hersteller  ATMEL [ATMEL Corporation]
Direct Link  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

DACREF Datenblatt(HTML) 24 Page - ATMEL Corporation

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AVR32768
32157A-AVR-12/10
14 JTAG and Nexus debug ports
14.1 JTAG port interface
Figure 14-1.
JTAG port interface example schematic.
TCK
TDO
TMS
RESET
TDI
100 nF
VDD
EVTO
7
8
TDO
3
VCC
4
TMS
5
RESET
6
TDI
9
GND
10
TCK
1
GND
2
2 x 5
header
Table 14-1.
JTAG port interface checklist.
Signal name
Recommended pin connection
Description
TMS
Test mode select, sampled on rising TCK
TDO
Test data output, driven on falling TCK
TCK
Test clock, fully asynchronous to system clock frequency
RESET
Device external reset line
TDI
Test data input, sampled on rising TCK
EVTO
Event output, not used
14.2 Nexus port interface
Do not use any capacitors on NEXUS lines because they can cause a speed
limitation. NEXUS uses GPIO multiplexed lines, and these should be dedicated for
NEXUS when used.



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