RTL8181 查看數據表（PDF） - Realtek Semiconductor

零件编号

产品描述 (功能)

比赛名单

RTL8181

Wireless LAN Access Point/Gateway Controller

Realtek Semiconductor 

RTL8181

Memory map (without TLB):

Virtual Address

0x8000_0000

Cacheable

region

0x81ff_ffff

0xa000_0000

None

cacheable

region

Physical Address

SDRAM

(32Mbyte)

0x0000_0000

0x01ff_ffff

0xa1f f_ffff

0xbfc0_0000

None

cacheable

region

Flash

(4Mbyte)

0x1fc0_0000

0xbfff_ffff

0x1fff_ffff

The memory map of RTL8181 I/O devices and registers are located in KSEG1 segment (uncacheable region). The following

table illustrates the address map:

Virtual address range

Size (bytes) Mapped device

0xBD01_0000 – 0xBD01_0FFF 4K

Special function registers (note)

0xBD01_1000 – 0xBD01_1FFF 4K

Memory controller registers

0xBD20_0000 – 0xBD2F_FFFF 1M

Ether net0

0xBD30_0000 – 0xBD3F_FFFF 1M

Ethernet1

0xBD40_0000 – 0xBD4F_FFFF 1M

WLAN controller

0xBD50_0000 – 0xBD5F_FFFF 1M

IO map address of PCI device

0xBD60_0000 – 0xBD6F_FFFF 1M

Memory map address of PCI device

0xBD70_0000 – 0xBD77_FFFF 512K

Configuration space of PCI device0

0xBD78_0000 – 0xBD7F_FFFF 512K

Configuration space of PCI device1

NOTE: The special function includes interrupt control, timer, watchdog, UART, and GPIO.

4. Register Mapping

The following table displays the address mapping of the all registers:

Virtual Address Register Symbol

Interrupt Controller

0xBD01_0000 GIMR

0xBD01_0004 GISR

GPIO

0xBD01_0040 PABDIR

0xBD01_0044 PABDATA

0xBD01_0048 PBIMR

0xBD01_004C PBISR

Timer

0xBD01_0050 TCCNT

Register Name

Global mask register

Global interrupt status register

Port A/B direction register

Port A/B data register

Port B interrupt mask register

Port B interrupt register

Timer/Counter control register

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