RALINK AP SDK 3.3.0.0 User's Manual
Page 17 of 93
1011.8000
1011.9FFF
8K
ROM
1011_a000
1011_FFFF
<<Reserved>>
1012.0000
- 1012.7FFF
32K
<<Reserved>>
1012.8000
1012.FFFF
32K
<<Reserved>>
1013.0000
- 1013.7FFF
32K
<<Reserved>>
1013.8000
- 1013.FFFF
32K
<<Reserved>>
1014.0000
- 1017.FFFF
256K
<<Reserved>>
1018.0000
- 101B.FFFF
256K
802.11n MAC/BBP
101C.0000
- 101F.FFFF
256K
USB OTG
1020.0000
- 1AFF.FFFF
<<Reserved>>
1B00.0000
- 1BFF.FFFF
16MB
External SRAM/Flash
1C00.0000
- 1EFF.FFFF
<<Reserved>>
1F00.0000
- 1FFF.FFFF
16MB(flash) or
4KB(ram) or
8KB(rom)
When BOOT_FROM = 2’b00,
<16MB external 16-bit flash is mapped.
When BOOT_FROM = 2’b01,
<8MB external 8-bit flash is mapped.
When BOOT_FROM = 2’b10,
4KB internal boot RAM is mapped for boot
from NAND application.
When BOOT_FROM = 2’b11,
8KB internal boot ROM is mapped for iNIC
application.
3.3
RT3883
The RT3883 SOC combines Ralink’s 802.11n draft compliant 3T3R MAC/BBP/RF, a high
performance 500MHz MIPS74Kec CPU core, a Gigabit Ethernet MAC, and a USB Host/Device.
With the RT3883, there are very few external components required for 2.4/5GHz 11n wireless
products. The RT3883 employs Ralink 2nd generation 11n technologies for longer range and
better throughput. The embedded high performance CPU can process advanced
applications effortlessly, such as WI-FI data processing without overloading the host processor.
In addition, the RT3883 has rich hardware interfaces (SPI/ I2S/ I2C/ PCM/ UART/ USB/ PCI/ PCIe/
RGMII/ MII) to enable many possible applications.