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AT91SAM7X256 Datasheet(PDF) 45 Page - ATMEL Corporation

No. de Pieza. AT91SAM7X256
Descripción  AT91 ARM Thumb-based Microcontrollers
Descarga  664 Pages
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Fabricante  ATMEL [ATMEL Corporation]
Página de inicio  http://www.atmel.com
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AT91SAM7X256 Datasheet(HTML) 45 Page - ATMEL Corporation

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6120D–ATARM–02-Feb-06
AT91SAM7X256/128 Preliminary
13.3.2
Test Environment
Figure 13-3 shows a test environment example. Test vectors are sent and interpreted by the
tester. In this example, the “board in test” is designed using a number of JTAG-compliant
devices. These devices can be connected to form a single scan chain.
Figure 13-3. Application Test Environment Example
13.4
Debug and Test Pin Description
Tester
JTAG
Interface
ICE/JTAG
Connector
AT91SAM7Xxx-based Application Board In Test
AT91SAM7Xxx
Test Adaptor
Chip 2
Chip n
Chip 1
Table 13-1.
Debug and Test Pin List
Pin Name
Function
Type
Active Level
Reset/Test
NRST
Microcontroller Reset
Input/Output
Low
TST
Test Mode Select
Input
High
ICE and JTAG
TCK
Test Clock
Input
TDI
Test Data In
Input
TDO
Test Data Out
Output
TMS
Test Mode Select
Input
JTAGSEL
JTAG Selection
Input
Debug Unit
DRXD
Debug Receive Data
Input
DTXD
Debug Transmit Data
Output


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