參數(shù)資料
型號: PEB2447H
廠商: SIEMENS AG
英文描述: Memory Time Switch Extended Large MTSXL
中文描述: 內(nèi)存定時開關(guān)擴(kuò)展大型MTSXL
文件頁數(shù): 18/51頁
文件大?。?/td> 1052K
代理商: PEB2447H
PEB 2447
Functional Description
Semiconductor Group
18
03.97
2.3.2
The TAP controller implements a state machine defined in the JTAG standard
IEEE1149.1. The instruction register of the controller is extended to 4 bits in order to
increase the number of instructions. This is necessary for the use of the build in selftest
procedure via the boundary scan interface:
Table 3
Instruction Code of 4 Bit TAP Controller
Instruction
Code
EXTEST
0000
INTEST
0001
SAMPLE / PRELOAD
0010
IDCODE
0011
BYPASS
11xx
TAP_TEST1:
Start built in self test
TAP_TEST2:
Write selftest control register
TAP_TEST3
0110
TAP_TEST4
0111
TAP_TEST5
1000
TAP_TEST6
1001
TAP_TEST7
1010
TAP_TEST8
1011
TAP Controller
The standard instructions are implemented according to the JTAG standard, just the
instruction register is extended to 4 bits. At the new instructions TAP_TEST1.. 8 special
internal test signals are activated during the state
“RUN TEST / IDLE”.
The MTSXL only uses TAP_TEST1 and TAP_TEST2 according to
table 3
.
0100
0101
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