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6384DS–ATARM–13-Jan-10
AT91SAM9G20 Summary
10. Peripherals
10.1
User Interface
The peripherals are mapped in the upper 256 Mbytes of the address space between the
addresses 0xFFFA 0000 and 0xFFFC FFFF. Each User Peripheral is allocated 16 Kbytes of
address space. A complete memory map is presented in Figure 8-1 on page 19.
10.2
Identifiers
Table 10-1 defines the Peripheral Identifiers of the AT91SAM9G20. A peripheral identifier is
required for the control of the peripheral interrupt with the Advanced Interrupt Controller and for
the control of the peripheral clock with the Power Management Controller.
Table 10-1.
AT91SAM9G20 Peripheral Identifiers (Continued)
Peripheral ID
Peripheral Mnemonic
Peripheral Name
External Interrupt
0
AIC
Advanced Interrupt Controller
FIQ
1
SYSC
System Controller Interrupt
2
PIOA
Parallel I/O Controller A
3
PIOB
Parallel I/O Controller B
4
PIOC
Parallel I/O Controller C
5
ADC
Analog to Digital Converter
6
US0
USART 0
7
US1
USART 1
8
US2
USART 2
9
MCI
Multimedia Card Interface
10
UDP
USB Device Port
11
TWI
Two-wire Interface
12
SPI0
Serial Peripheral Interface 0
13
SPI1
Serial Peripheral Interface 1
14
SSC
Synchronous Serial Controller
15
-
Reserved
16
-
Reserved
17
TC0
Timer/Counter 0
18
TC1
Timer/Counter 1
19
TC2
Timer/Counter 2
20
UHP
USB Host Port
21
EMAC
Ethernet MAC
22
ISI
Image Sensor Interface
23
US3
USART 3
24
US4
USART 4
25
US5
USART 5
26
TC3
Timer/Counter 3
27
TC4
Timer/Counter 4
28
TC5
Timer/Counter 5
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