SCANSTA101 Datasheet, PDF (29/31 Pages) National Semiconductor (TI) – Low Voltage IEEE 1149.1 STA Master

Software Interface Details (Continued)
TABLE 29. TDI_SM LFSR MSB Result Register (MSRESR) ($0B) (Notes 30, 31)
Bit(s)
15:0
Type
RW
Field
MSW LFSR Result
Address
Offset
0
Reset Value
0000h
Reset Source
SYS_RST
Note 30: MSW LFSR Result<15:0> is the MS word of the LFSR result.
Note 31: This register along with register LSRESR form a register pair and should be read/ written with two consecutive read/write accesses.
TABLE 30. Index Register (INDEXR) ($0C) (Notes 32, 33, 34)
Bit(s)
15:0
Type
RW
Index
Field
Address
Offset
0
Reset Value
0000h
Reset Source
SYS_RST
Note 32: Index<15:0> sets the individual address memory pointer.
Note 33: Address memory pointer must be on a long word boundary.
Note 34: Writing to this register sets the TDO_SM, TDI_SM, Expected and Mask pointers. These pointers will automatically increment with each long word read from
the TDI_SM space and each long word write to the other TDO_SM, Expected and Mask spaces.
TABLE 31. Vector Index Register (VINDEXR) ($11) (Notes 35, 36)
Bit(s)
15:0
Type
RW
Field
Vector Index
Address
Offset
0
Reset Value
0000h
Note 35: Vector Index<15:0> sets the Vector address memory pointer.
Note 36: Address memory pointer must be on a long word boundary.
Reset Source
SYS_RST
TABLE 32. Header/Trailer Index Register (HTINDEXR) ($13) (Notes 37, 38)
Bit(s)
15:0
Type
RW
Field
Header/Trailer Index
Address
Offset
0
Reset Value
0000h
Note 37: Header/Trailer Index<15:0> sets the Header/Trailer address memory pointer.
Note 38: Address memory pointer must be on a long word boundary.
Reset Source
SYS_RST
TABLE 33. Macro Index Register (MINDEXR) ($15) (Notes 39, 40)
Bit(s)
15:0
Type
RW
Field
Macro Index
Address
Offset
0
Reset Value
0000h
Note 39: Macro Index<15:0> sets the Macro address memory pointer.
Note 40: Address memory pointer must be on a long word boundary.
Reset Source
SYS_RST
TABLE 34. Sequencer Index Register (SINDEXR) ($17) (Notes 41, 42)
Bit(s)
15:0
Type
RW
Field
Sequencer Index
Address
Offset
0
Reset Value
0000h
Note 41: Sequencer Index<15:0> sets the Sequencer address memory pointer.
Note 42: Address memory pointer must be on a long word boundary.
Reset Source
SYS_RST
TABLE 35. ScanBridge Support Index Register (BSINDEXR) ($19) (Notes 43, 44)
Bit(s)
15:0
Type
RW
Field
ScanBridge Index
Address
Offset
0
Reset Value
0000h
Note 43: ScanBridge Index<15:0> sets the ScanBridge Support address memory pointer.
Note 44: Address memory pointer must be on a long word boundary.
Reset Source
SYS_RST
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