Intel 8XC196MC Benutzerhandbuch
5-33
STANDARD AND PTS INTERRUPTS
PTS A/D Scan Mode Control Block
In A/D scan mode, the PTS causes the A/D converter to perform multiple conversions on one or more
channels and then stores the results. The control block contains pointers to both the AD_RESULT
register (PTSPTR1) and a table of A/D conversion commands and results (PTSPTR2), a control
register (PTSCON), and an A/D conversion count (PTSCOUNT).
channels and then stores the results. The control block contains pointers to both the AD_RESULT
register (PTSPTR1) and a table of A/D conversion commands and results (PTSPTR2), a control
register (PTSCON), and an A/D conversion count (PTSCOUNT).
7
0
Unused
0
0
0
0
0
0
0
0
7
0
Unused
0
0
0
0
0
0
0
0
15
8
PTSPTR2 (H)
Pointer 2 Value (high byte)
7
0
PTSPTR2 (L)
Pointer 2 Value (low byte)
15
8
PTSPTR1 (H)
Pointer 1 Value (high byte)
7
0
PTSPTR1 (L)
Pointer 1 Value (low byte)
7
0
PTSCON
M2
M1
M0
0
UPDT
0
1
0
7
0
PTSCOUNT
Consecutive A/D Conversions
Register
Location
Function
PTSPTR2
PTSCB + 4
Pointer 2 Value
This register contains the address of the A/D result register
(AD_RESULT).
(AD_RESULT).
PTSPTR1
PTSCB + 2
Pointer 1 Value
This register contains the address of the table of A/D conversion
commands and results.
commands and results.
PTSCON
PTSCB + 1
PTS Control Bits
M2:0
PTS Mode
These bits select the PTS mode.
M2
M1
M0
1
1
0
A/D Scan Mode
UPDT Update
0 = reload original PTSPTR1 value after each A/D scan
1 = retain current PTSPTR1 value after each A/D scan
1 = retain current PTSPTR1 value after each A/D scan
Figure 5-18. PTS Control Block – A/D Scan Mode