RTL8181 查看數據表（PDF） - Realtek Semiconductor

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RTL8181

Wireless LAN Access Point/Gateway Controller

Realtek Semiconductor 

The read access timing of flash memory:

A[20..0]

F_CE0#

WE#

OE#

D[n..0]

RTL8181

8. Ethernet Controller

There are two 10/100M Ethernet MAC embedded in RTL8181. The Ethernet device has bus master capability, which will

move packets between SDRAM and Ethernet controller through DMA mechanism. Thus, it could offload the CPU loading and

get better performance. Besides, it also supports full-duplex operation, making possible 200Mbps bandwidth at no additional

cost.

Ethernet 0 Register Set (LAN PORT)

Virtual Address Size (byte) Name

Description

0xBD20_0000 4

ETH0_CNR1 Control register 1

0xBD20_0004 6

ETH0_ID

NIC ID

0xBD20_000C 8

ETH0_MAR Multicast register

0xBD20_0014 4

ETH0_TSAD Transmit Starting Logic Address of

Descriptor

0xBD20_0018 4

ETH0_RSAD Receive Starting Logic Address of

Descriptor

0xBD20_0020 2

ETH0_IMR Ethernet0 Interrupt Mask Register

0xBD20_0024 2

ETH0_ISR

Ethernet0 Interrupt Status Register

0xBD20_0028 4

ETH0_TMF0 Type match filter 0 register

0xBD20_002C 4

ETH0_TMF1 Type match filter 1 register

0xBD20_0030 4

ETH0_TMF2 Type match filter 2 register

0xBD20_0034 4

ETH0_TMF3 Type match filter 3 register

0xBD20_0038 4

ETH0_MII

MII access register

0xBD20_003C 4

ETH0_CNR2 NIC control register 2

0xBD20_0040 16

ETH0_UAR Unicast address filter register

0xBD20_0080 3

ETH0_MPC Indicates the number of packets

discarded due to rx FIFO overflow.

It is a 24-bit counter. It is cleared to

zero by read command.

0xBD20_0084 2

ETH0_TXCOL Transmit collision counter. This

16-bit counter increments by 1 for

every collision event. It rolls over

when becomes full. It is cleared to

zero by read command.

0xBD20_0088 2

ETH0_RXER Receive error count. This 16-bit

counter increments by 1 for each

valid packet received . It is cleared

to zero by read command.

Access

R/W

R/W

R/W

R/W

R/W

R/W

R/W

R/W

R/W

R/W

R/W

R/W

R/W

R/W

R

R

R

Ethernet 1 Register Set (WAN PORT)

Virtual Address Size (byte) Name

0xBD30_0000 4

ETH1_CNR1

0xBD30_0004 6

ETH1_ID

0xBD30_000C 8

ETH1_MAR

Description

Control register 1

NIC ID

Multicast register

Access

R/W

R/W

R/W

CONFIDENTIAL

21

v1.0

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