W5500 Datasheet, PDF (28/65 Pages) List of Unclassifed Manufacturers – Supports 8 independent sockets simultaneously

Block Select Bits
Blocks
16bist Offset Address
Valid Range
11111 (0x1F) _{Socket 7 RX Buffer}
11110 (0x1E) _{Socket 7 TX Buffer}
11101 (0x1E) _{Socket 7 Register}
11100 (0x1C) _Reserved
11011 (0x1B) _{Socket 6 RX Buffer}
11010 (0x1A) _{Socket 6 TX Buffer}
11001 (0x19) _{Socket 6 Register}
11000 (0x18) _Reserved
10111 (0x17) _{Socket 5 RX Buffer}
10110 (0x16) _{Socket 5 TX Buffer}
10101 (0x15) _{Socket 5 Register}
10100 (0x14) _Reserved
10011 (0x13) _{Socket 4 RX Buffer}
10010 (0x12) _{Socket 4 TX Buffer}
10001 (0x11) _{Socket 4 Register}
01000 (0x10) _Reserved
01111 (0x0F) _{Socket 3 RX Buffer}
01110 (0x0E) _{Socket 3 TX Buffer}
01101 (0x0D) _{Socket 3 Register}
01100 (0x0C) _Reserved
01011 (0x0B) _{Socket 2 RX Buffer}
01010 (0x0A) _{Socket 2 TX Buffer}
01001 (0x09) _{Socket 2 Register}
01000 (0x08) _Reserved
00111 (0x07) _{Socket 1 RX Buffer}
00110 (0x06) _{Socket 1 TX Buffer}
00101 (0x05) _{Socket 1 Register}
00100 (0x04) _Reserved
00011 (0x03) _{Socket 0 RX Buffer}
00010 (0x02) _{Socket 0 TX Buffer}
00001 (0x01) _{Socket 0 Register}
00000 (0x00) _{Common Register}
0xFFFF
0xF800
0xF7FF
0xF000
0xEFFF
Socket 7 RX Buffer _0x9E2C
0x1000
0x0FFF
0x0800
0x07FF
0x0000
0xFFFF
0xF800
0xF7FF
0xF000
0xEFFF
Socket 1 TX Buffer _0x413C
0x1000
0x0FFF
0x0800
0x07FF
0x0000
Reserved
Socket 0 Register
0xFFFF
0x0031
0x0030
0x0000
Reserved
Common Register
0xFFFF
0x003A
0x0039
0x0000
Figure 20. Register & Memory Organization
Physical
16KB RX Memory
0x3FFF
0x3E2C
Socket 7
RX Buffer (2KB)
0x3800
Socket 6
RX Buffer (2KB)
0x3000
Socket 5
RX Buffer (2KB)
0x2800
Socket 4
0x2000 ^{RX Buffer (2KB)}
Socket 3
RX Buffer (2KB)
0x1800
Socket 2
0x1000 ^{RX Buffer (2KB)}
0x0FFF
Socket 1
RX Buffer (2KB)
0x0800
Socket 0
RX Buffer (2KB)
0x0000
Physical
16KB TX Memory
0x3FFF
Socket 7
TX Buffer (2KB)
0x3800
Socket 6
TX Buffer (2KB)
0x3000
Socket 5
TX Buffer (2KB)
0x2800
Socket 4
TX Buffer (2KB)
0x2000
Socket 3
TX Buffer (2KB)
0x1800
Socket 2
TX Buffer (2KB)
0x1000
0x0FFF
Socket 1
0x093C _{TX Buffer (2KB)}
0x0800
Socket 0
TX Bufer (2KB)
0x0000
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W5500 Datasheet Version1.0 (August 2013)