RTL8181 Wireless LAN Access Point/Gateway Controller DATA ...

RTL8181Memory map (without TLB):Virtual Address0x8000_0000CacheableregionPhysical Address0x0000_00000x81ff_ffff0xa000_0000NonecacheableregionSDRAM(32Mbyte)0x01ff_ffff0xa1f f_ffff0xbfc0_0000NonecacheableregionFlash(4Mbyte)0x1fc0_00000xbfff_ffff0x1fff_ffffThe memory map of RTL8181 I/O devices and registers are located in KSEG1 segment (uncacheable region). The followingtable illustrates the address map:Virtual address range Size (bytes) Mapped device0xBD01_0000 – 0xBD01_0FFF 4K Special function registers (note)0xBD01_1000 – 0xBD01_1FFF 4K Memory controller registers0xBD20_0000 – 0xBD2F_FFFF 1M Ethernet00xBD30_0000 – 0xBD3F_FFFF 1M Ethernet10xBD40_0000 – 0xBD4F_FFFF 1M WLAN controller0xBD50_0000 – 0xBD5F_FFFF 1M IO map address of PCI device0xBD60_0000 – 0xBD6F_FFFF 1M Memory map address of PCI device0xBD70_0000 – 0xBD77_FFFF 512K Configuration space of PCI device00xBD78_0000 – 0xBD7F_FFFF 512K Configuration space of PCI device1NOTE: The special function includes interrupt control, timer, watchdog, UART, and GPIO.4. Register MappingThe following table displays the address mapping of the all registers:Virtual Address Register Symbol Register NameInterrupt Controller0xBD01_0000 GIMR Global mask register0xBD01_0004 GISR Global interrupt status registerGPIO0xBD01_0040 PABDIR Port A/B direction register0xBD01_0044 PABDATA Port A/B data register0xBD01_0048 PBIMR Port B interrupt mask register0xBD01_004C PBISR Port B interrupt registerTimer0xBD01_0050 TCCNT Timer/Counter control register13CONFIDENTIAL v1.0