Data Sheet

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37
iEthernet
W5200
Sn_RXMEM_SIZE(Socket n RX Memory Size Register) [R/W] [0x401E+0x0n00] [0x02]
It configures the internal RX Memory size of each SOCKET. RX Memory size of each SOCKET is
configurable in the size of 0, 1, 2, 4, 8, and 16 Kbytes. 2Kbytes is assigned when reset.
Sn_RXMEM_SIZE
SUM
(sum of Sn_RXMEM_SIZE) of each SOCKET should be 16KB.
Value 0x00 0x01 0x02 0x04 0x08 0x10
Memory size 0KB 1KB 2KB 4KB 8KB 16KB
Ex1) SOCKET 0 : 8KB, SOCKET 1 : 2KB
0x401E 0x411E
0x08 0x02
Ex2) SOCKET 2 : 1KB, SOCKET 3 : 1KB
0x421E 0x431E
0x01 0x01
Ex3) SOCKET 4 : 1KB, SOCKET 5 : 1KB
0x441E 0x451E
0x01 0x01
Ex4) SOCKET 6 : 1KB, SOCKET 7 : 1KB
0x461E 0x471E
0x01 0x01
Sn_TXMEM_SIZE(Socket n TX Memory size Register) [R/W][0x401F+0x0n00] [0x02]
It configures the internal TX Memory size of each SOCKET. TX Memory size of each SOCKET is
configurable in the size of 0, 1, 2, 4, 8, and 16Kbytes. 2Kbytes is assigned when reset.
Sn_TXMEM_SIZE
SUM
(summation of Sn_TXMEM_SIZE) of each SOCKET should be 16KB.
Ex1) SOCKET 0 : 4KB, SOCKET 1 : 1KB
0x401F 0x411F
0x04 0x01
Ex2) SOCKET 2 : 2KB, SOCKET 3 : 1KB
0x421F 0x431F
0x02 0x01
Ex3) SOCKET 4 : 2KB, SOCKET 5 : 2KB
0x441F 0x451F
0x02 0x02
Ex4) SOCKET 6 : 2KB, SOCKET 7 : 2KB
0x461F 0x471F
0x02 0x02