Siemens ERTEC 200P-2 Manual page 156

31:24
23:22 SRC_AMODE
21:20 DEST_AMODE
19:18 BURST_MODE
15:8
7:0 CTRANSFER
DMA Stack – Transfer Count Stack
Bit no. Name
31 LAST_TR
30 EN_DMA_ACK
29:24
23:22 ESIZE
21:16
15:0 CTR_COUNT
Copyright © Siemens AG 2016. All rights reserved
Technical data subject to change
reserved
Source Address Mode
00 = increment address
10 = hold address
x1 = reserved for future implementation = hold ad-
dress
Destination Address Mode
00 = increment address
10 = hold address
x1 = reserved for future implementation = hold ad-
dress
00 = Single
01 = INCR4
10 = INCR8
11 = INCR16
reserved
Current Transfer List Number to continue from after
interruption
Description
Last Transfer of the Job
0 = not last, 1=last
1 = set output HW_DMA_ACK if transfer is finished
reserved
Element Size
00 = 8 bit
01 = 16 bit
10 = 32 bit
11 = reserved
reserved
Current Transfer Count
0x0 = 1 element, 0xFFFF = 63536 elements
156 ERTEC 200P-2 Manual
Version 1.0