at91sam9g25-cu ATMEL Corporation, at91sam9g25-cu Datasheet - Page 27

• Manufacturer Part Number: at91sam9g25-cu
• Description: At91sam Arm-based Embedded Mpu
• Manufacturer: ATMEL Corporation

6.6
Table 1. AT91SAM9G25 Master to Slave Access
11032AS–ATARM–27-Jul-11
Masters
Slaves
0
1
2
3
4
5
6
7
8
9
USB Device High Speed DPR
USB Host OHCI registers
Master to Slave Access
USB Host EHCI registers
External Bus Interface
Peripheral Bridge 0
Peripheral Bridge 1
Internal SRAM
Internal ROM
DDR2 Port 1
DDR2 Port 2
DDR2 Port 3
SMD
All the Masters can normally access all the Slaves. However, some paths do not make sense,
for example allowing access from the USB Device High speed DMA to the Internal Peripherals.
Thus, these paths are forbidden or simply not wired, and shown as “-” in the following table.
0
ARM926
Instr.
X
X
X
X
X
X
X
X
-
-
1
ARM926
Data
X
X
X
X
X
X
X
X
-
-
2&3
DMA 0
X
X
X
X
X
X
-
-
-
-
4&5
DMA 1
X
X
X
X
X
X
X
-
-
-
6
USB Device
HS DMA
X
X
-
-
-
-
-
-
-
-
USB Host
HS EHCI
7
X
X
-
-
-
-
-
-
-
-
8
USB Host
HS OHCI
X
X
-
-
-
-
-
-
-
-
9
ISI DMA
SAM9G25
X
X
X
-
-
-
-
-
-
-
10
EMAC DMA
X
X
-
-
-
-
-
-
-
-
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