參數資料
型號: PEB2447H
廠商: SIEMENS AG
英文描述: Memory Time Switch Extended Large MTSXL
中文描述: 內存定時開關擴展大型MTSXL
文件頁數: 14/51頁
文件大?。?/td> 1052K
代理商: PEB2447H
PEB 2447
Functional Description
Semiconductor Group
14
03.97
2.3
Boundary Scan and TAP Controller
2.3.1
The MTSXL provides fully IEEE Std. 1149.1 compatible boundary scan support
consisting of
– a complete boundary scan
– a test access port controller (TAP controller)
– four dedicated pins (TCK, TMS, TDI, TDO)
– a 32 bit IDCODE register
All pins except power supply and ground are included in the boundary scan. Depending
on the pin functionality one, two or three boundary scan cells are provided:
Table 1
Boundary Scan Cell Type
Pin Type
Number of Boundary Scan Cells
Input
1
Output
2
I/O
3
Boundary Scan
When the TAP controller is in the appropriate mode data is shifted into / out of the
boundary scan via the pins TDI / TDO using the 6.25 MHz clock on pin TCK.
The MTSXL pins are included in the boundary scan in the following sequence:
Table 2
Boundary Scan Sequence
Boundary Scan
Number TDI ->
Number
Name
1
81
IN0
2
82
IN1
3
83
IN2
4
84
IN3
5
85
IN4
6
86
IN5
7
87
IN6
8
88
IN7
9
89
IN8
10
90
IN9
11
91
IN10
Usage
Input
Output, enable
Input, output, enable
Pin
Pin
Type
Number of Scan
Cells
1
1
1
1
1
1
1
1
1
1
1
Default
Value
0
0
1
0
0
0
0
0
0
0
0
I
I
I
I
I
I
I
I
I
I
I
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