SCANSTA101SM National Semiconductor, SCANSTA101SM Datasheet - Page 24

• Manufacturer Part Number: SCANSTA101SM
• Description: IC,Test/JTAG Support,CMOS,BGA,49PIN,PLASTIC
• Manufacturer: National Semiconductor

Specifications of SCANSTA101SM

• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

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Note 12: Write capability to the register is only for test and debug purposes. Drivers should disable writes to register during normal operation.
Note 13: Results of Compare bit is toggled after a compare is complete and it is set to the mismatch state when sequencer is kicked off again. Remains in last
state until next compare completed or until set to the mismatch.
Note 14: Reserved Using Vector x for future growth for the number of vectors.
Note 15: Half full or half empty designates 56 long words.
Results of Compare
BIST Running
Memory BIST Result
TDO Status Half
TDO Status Empty
TDI Status Full
TDI Status Half
Using Sequencer
Using Vector<2:0>
Bit(s)
7:3
2:0
15
14
13
12
11
10
9
8
'000'
'001'
'010'
'011'
'100'
'1'
'0'
'1'
'0'
'1'
'0'
'1'
'0'
'1'
'0'
'1'
'0'
'1'
'0'
'1'
'0'
Type
RW
RW
RW
RW
RW
RW
RW
RW
RW
RO
Results of compare between TDI_SM and Expected memory space
Compare match
Compare mismatch
Indicates the BIST operation is still active
BIST operation active
BIST operation complete or BIST operation not running
ScanMaster BIST result. BIST result will be held until overwritten by next BIST operation.
Passed memory BIST
Failed memory BIST
TDO_SM memory space status half empty
TDO_SM memory space half empty
TDO_SM memory space not half empty
TDO_SM memory space status empty
TDO_SM memory space empty
TDO_SM memory space not empty
TDI_SM memory space status full
TDI_SM memory space full
TDI_SM memory space not full
TDI_SM memory space status half full
TDI_SM memory space half full
TDI_SM memory space not half full
Sequencer active and processing. Bit cleared when sequence complete.
Sequencer active
Sequencer inactive
Using Vector x designates the vector "x" currently running, where "x" is the vector number, a binary
encoding of bits <2:0>. Only vectors 1 through 4 are valid. Vectors 5 through 7 reserved for future use.
Field cleared when vectors complete.
No vector active.
Vector 1 active.
Vector 2 active.
Vector 3 active.
Vector 4 active.
Results of Compare (Note 13)
BIST Running
Memory BIST Result
TDO Status Half-empty (Note 15)
TDO Status Empty
TDI Status Full
TDI Status Half-full (Note 15)
Using Sequencer
Reserved Using Vector x (Note 14)
Using Vector x
TABLE 20. Status Register (STATUS) ($01) (Note 12)
Field
24
Address Offset
0
0
0
0
0
0
0
0
0
0
Reset Value
00000b
000b
0b
0b
0b
0b
0b
0b
0b
0b
Reset Source
SYS_RST
SYS_RST
SYS_RST
SYS_RST
SYS_RST
SYS_RST
SYS_RST
SYS_RST
SYS_RST