AT91SAM9G45 Datasheet, PDF (17/54 Pages) ATMEL Corporation – AT91 ARM Thumb-based Microcontrollers

AT91SAM9G45
6.2.2
6.2.3
Matrix Slaves
Each Slave has its own arbiter, thus allowing a different arbitration per Slave to be programmed.
Table 6-2.
Slave 0
Slave 1
Slave 2
Slave 3
Slave 4
Slave 5
Slave 6
Slave 7
List of Bus Matrix Slaves
Internal SRAM
Internal ROM
USB OHCI
USB EHCI
UDP High Speed RAM
LCD User Interface
DDR Port 0
DDR Port 1
DDR Port 2
DDR Port 3
External Bus Interface
Internal Peripherals
Masters to Slaves Access
All the Masters can normally access all the Slaves. However, some paths do not make sense,
such as allowing access from the Ethernet MAC to the internal peripherals. Thus, these paths
are forbidden or simply not wired, and shown “-” in the following tables.
Table 6-3. AT91SAM9G45 Masters to Slaves Access
Master
0
1
2
3
Slave
ARM
926
Instr.
ARM
926
Data
PDC
USB
Host
OHCI
0 Internal SRAM 0
X
X
X
X
Internal ROM
X
X
X
-
UHP OHCI
X
X
-
-
UHP EHCI
X
X
-
-
LCD User Int.
X
X
-
-
1
UDPHS RAM
X
X
-
-
2
DDR Port 0
X
-
-
-
3
DDR Port 1
-
X
-
-
4
DDR Port 2
-
-
X
X
5
DDR Port 3
-
-
X
X
6
EBI
X
X
X
X
7
Internal Periph.
X
X
X
-
4&5
DMA
X
-
-
-
-
-
-
-
X
X
X
X
6
ISI
DMA
X
-
-
-
-
-
-
-
X
X
X
-
7
LCD
DMA
-
-
-
-
-
-
-
-
-
X
X
-
8
Ethernet
MAC
X
-
-
-
-
-
-
-
X
X
X
-
9
USB
Device
HS
X
X
-
-
-
-
-
-
X
X
X
-
10
USB
Host
EHCI
X
-
-
-
-
-
-
-
X
X
X
-
17
6438CS–ATARM–13-Oct-09