參數(shù)資料
型號： 82803AAMRH-R
英文描述： Controller Miscellaneous - Datasheet Reference
中文描述： 控制器雜項-數(shù)據(jù)表參考
文件頁數(shù)： 51/52頁
文件大?。?/td> 322K
代理商： 82803AAMRH-R
82803AA MRH-R
R
Datasheet
51
6.
Testability
The MRH-R supports the following test modes.
Table 7. MRH-R Test Modes
Number of Clocks TEST#
Driven Low
Test Mode
< 4
No Test Mode Selected
5
Reserved. Do Not Attempt
6
All ‘Z’
7-8
Reserved. Do Not Attempt
9
XOR Chain
10-63
Reserved. Do Not Attempt
Note:
The ExSCK clock on the MRH-R should be referenced when asserting the signal TEST# low for
activation of the supported test features of the MRH-R.
6.1.
Tri-state Mode
The Tri-state test mode is activated by asserting the TEST# signal low for 6 clocks. All outputs and bi-
directional pins are tri-stated, including the XOR tree outputs.
6.2.
XOR Chain Mode
The MRH-R has 4 XOR chains. This test mode activates by asserting the TEST# signals low for 7
clocks. This test mode can be used to check the connectivity of the pins. The individual XOR chains can
be observed with the XOROUT pins defined in the following table.
XOR Output Pin
XOR Chain #
Reserved (pin D9)
0
Reserved (pin D11)
2
Reserved (pin B11)
3
Reserved (pin C11)
4
Since the CFM and CFM# pins are connected directly to the CTM and CTM# pins, the CFM, and CFM#
pins are not part of the XOR chain. We can test connectivity of the CFM, and CFM# pins by driving a
value on the CFM and CFM# pins, and probing them on the CTM and CTM# pins.
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