SCANSTA101_06 Datasheet, PDF (26/32 Pages) National Semiconductor (TI) – Low Voltage IEEE 1149.1 STA Master

Bit(s)
15:13
12
11
10
9
8
7:3
2:0
Type
RO
RW
RW
RW
RW
RW
RO
RW
TABLE 22. Interrupt Status Register (INTSTAT) ($03) (Note 22)
Field
Address Offset
Reserved
0
TDO Half-empty Interrupt (Note 21)
0
TDO Empty Interrupt
0
TDI Full Interrupt
0
TDI Half-full Interrupt (Note 21)
0
Sequencer Interrupt
0
Reserved Vector x Interrupt (Notes 19,
0
20)
Vector x Interrupt (Note 20)
0
Reset Value
00b
0b
1b
0b
0b
0b
00000b
000b
Reset Source
SYS_RST
SYS_RST
SYS_RST
SYS_RST
SYS_RST
SYS_RST
Note 19: Reserved Vector x Interrupt for future growth for the number of vectors.
Note 20: Drivers shouldn't allow Sequencer Interrupt and Vector x Interrupt to be set at same time. Sequencer Interrupt has priority over the Vector x Interrupt.
Note 21: Half full or half empty designates 56 long words.
Note 22: This register is writable in debug mode only.
TDO Half-empty Interrupt
'1'
'0'
TDO Empty Interrupt
'1'
'0'
TDI Full Interrupt
'1'
'0'
TDI Half-full Interrupt
'1'
'0'
Sequencer Interrupt
'1'
'0'
Vector Interrupt<2:0>
'000'
'001'
'010'
'011'
'100'
TDO_SM memory space half empty status
TDO_SM memory space half empty
TDO_SM memory space not half empty
TDO_SM memory space empty status
TDO_SM memory space empty
TDO_SM memory space not empty
TDI_SM memory space full status
TDI_SM memory space full
TDI_SM memory space not full
TDI_SM memory space half full status
TDI_SM memory space half full
TDI_SM memory space not half full
Sequencer completed status
Sequencer processing completed
Sequencer processing or not started
Vector "x" completed status, 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.
No vector completed activity
Vector 1 completed
Vector 2 completed
Vector 3 completed
Vector 4 completed
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