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Scan IF Registers
24-36 Scan IF
SIFDEBUG, Scan IF Debug Register, Write Mode
15 14 13 12 11 10 9 8
Reserved
w w w w w w w w
76543210
Reserved SIFDEBUGx
w w w w w w w w
Reserved
Bits
15-2
Reserved. Must be written as zero.
SIFDEBUGx
Bits
1-0
SIFDEBUG register mode. Writing these bits selects the read-mode of the
SIFDEBUG register. SIFDEBUG must be written with MOV instructions only.
00 When read, SIFDEBUG shows the last address read by the PSM
01 When read, SIFDEBUG shows the value of the TSM state pointer and
the PSM bits Q7 - Q0
10 When read, SIFDEBUG shows the contents of the current SIFTSMx
register.
11 When read, SIFDEBUG shows the currently selected DAC register and
its contents.
SIFDEBUG, Scan IF Debug Register, Read Mode After 00h Is Written
15 14 13 12 11 10 9 8
Last Address Read by PSM
r r r r r r r r
76543210
Last Address Read By PSM
r r r r r r r r
Last PSM
Bits
15-0
When SIFDEBUG is read, after 00h has been written to it, SIFDEBUG shows
the last address read by the PSM.