JPS5692471A - Test device - Google Patents
Test deviceInfo
- Publication number
- JPS5692471A JPS5692471A JP16901779A JP16901779A JPS5692471A JP S5692471 A JPS5692471 A JP S5692471A JP 16901779 A JP16901779 A JP 16901779A JP 16901779 A JP16901779 A JP 16901779A JP S5692471 A JPS5692471 A JP S5692471A
- Authority
- JP
- Japan
- Prior art keywords
- cycles
- memory
- expected value
- register group
- stores
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Tests Of Electronic Circuits (AREA)
Abstract
PURPOSE: To decrease hardware of holding means and make constitution simple by holding only the expected value for a response output if the testing of said response output is necessary.
CONSTITUTION: The information necessary for checking is stored in a register group 4. In (n) cycles, a memory 25 makes operation of (n-3) cycles. In (n+1) cycles, the memory 25 makes operation of (n-2) cycles, and a testing circuit stores the expected value into the FF1 of a register group 4. In (n+2) cycles, the memory 25 makes operation of (n-1) cycles. The contents of the FF1 remain intact. In (n+3) cycles, the memory 25 makes write operation of n cycles and the testing circuit stores the contents of the FF1 of the register group 4 into an FF2 and the FF1 stores the new expected value. In (n+4) cycles, the memory 25 makes read operation of (n+1) cycles and a checking circuit 13 compares the output of the FF2 with the read data from the memory 4 and generates an error signal.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16901779A JPS5692471A (en) | 1979-12-25 | 1979-12-25 | Test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16901779A JPS5692471A (en) | 1979-12-25 | 1979-12-25 | Test device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5692471A true JPS5692471A (en) | 1981-07-27 |
Family
ID=15878781
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16901779A Pending JPS5692471A (en) | 1979-12-25 | 1979-12-25 | Test device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5692471A (en) |
-
1979
- 1979-12-25 JP JP16901779A patent/JPS5692471A/en active Pending
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