W5100S datasheet(22/110 Pages) WIZNET

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W5100S Datasheet Version1.2.5

* Register Symbol (Register full Name)

- [Register Type][Address Offset][Reset Value]

Bit7

Bit6

Bit5

Bit4

Bit3

Bit2

Bit1

Bit0

Bit Type

Sn_IR [3: 0] indicates a Register Symbol [Upper Bit: Lower Bit].

Sn_IR [3: 0] = '0001' indicates Sn_IR [3] = '0', Sn_IR [2] = '0', Sn_IR [1] = '0', Sn_IR [0] = '1'.

[Register/Bit Type]: Type of Register and Bit.

[RW] : Both reading and writing are possible.

[R=W] : The value read and written are the same.

[RO] : Read Only

[WO] : Write Only

[W] : Write Only

[WC] : Cleared by written ‘1’.

[W0] : Must be written only ‘0’.

[W1] : Must be written only ‘1’.

[AC] : Auto Clear

[1] : Always read ‘1’

[0] : Always read ‘0’

[-] : Not available

[Address Offset]: Register Address Offset

[Reset Value]: Default Value.

Ex1) 3.1.1 MR (Mode Register)

[RW][0x0000][0x03]

MR is abbreviation for Mode Register. This Register is possible to be read and written.

The Register Address Offset is ‘0x0000’ and it is set to ‘0x03’ after Reset.

RST

PPPoE

IND

R=W

Ex2) MR [RST]

MR [RST] means RST Bit in MR.

Ex3) MR [7:0]

MR [7:0] means the Bits from 7th to 0th bit in MR.

W5100S Datasheet(PDF) 22 Page - WIZnet Co., Ltd

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