Sifdebug, scan if debug register, write mode – Texas Instruments MSP430x4xx User Manual
Page 496
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
7
6
5
4
3
2
1
0
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
7
6
5
4
3
2
1
0
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.