Copyright © Siemens AG 2016. All rights reserved
106
ERTEC 200P-2 Manual
Technical data subject to change
Version 1.0
2.3.4.1.3.3
Block diagram
The block diagram of the GDMA controller is shown in
X
Figure 2: Block diagram of the GDMA controller
DMA jobs are programmed by means of GDMA Job Control registers and the transfer
records of the DMA RAM, as illustrated in Figure 3
X
.
AHB MASTER IF
AHB SLAVE IF
GDMA
Controller
Core
CONTROL REGISTERS
Base Address registers
Main Control register
Job Control registers
- contain the Job List : j+1 jobs
STATUS REGISTERS
Job Status
Finished Jobs
Actual Job Status
DMA IRQ Status
DMA ERR Status
HW_JOB_START(0)
HW_JOB_START(1)
HW_JOB_START(63)
HW_DMA_REQ
Multi Layer AHB
J
o
b
-s
ta
rt
s
ig
n
a
ls
f
ro
m
H
W
D
M
A
h
a
n
d
h
a
k
e
w
it
h
H
W
DMA Interrupt request
j+1
H
W
_
S
E
L
E
C
T
j+1
(j+1) * 6
DMA_IRQ
EDC_IRQ
GDMA Registers
M
U
X
DMA RAM
Transfer List
n+1 transfers
Job Stack
j+1 stacks
MEM Wrapper
dma_1_block_diagram.vsd
j+1
HW_DMA_ACK
Содержание ERTEC 200P
Страница 1: ...ERTEC 200P 2 Enhanced Real Time Ethernet Controller Manual ...
Страница 309: ...Copyright Siemens AG 2016 All rights reserved 309 ERTEC 200P 2 Manual Technical data subject to change Version 1 0 ...
Страница 492: ...Copyright Siemens AG 2016 All rights reserved 492 ERTEC 200P 2 Manual Technical data subject to change Version 1 0 ...