W3100A Datasheet, PDF (22/63 Pages) List of Unclassifed Manufacturers – i2Chip W3100A

DIR (Destination IP Address Register) [R/W, C0 : 0xA8 – 0xAB, C1 : 0xC0 – 0xC3, C2 : 0xD8 –
0xDB, C3 : 0xF0 – 0xF3]
This register sets the Destination IP Address of each channel to be used in setting the TCP connection. In
active mode, IP address needs to be set before executing the Connect command. In passive mode, W3100A
sets up the connection and then updates as peer IP internally.
DPR (Destination Port Register) [R/W, C0 : 0xAC – 0xAD, C1 : 0xC4 – 0xC5, C2 : 0xDC –
0xDD, C3 : 0xF4 – 0xF5]
This register sets the Destination Port number of each channel to be used in setting the TCP connection. In
active mode, port number needs to be set before executing the Connect command. In passive mode,
W3100A sets up the connection and then updates as peer port number internally.
SPR (Source Port Register) [R/W, C0 : 0xAE – 0xAF, C1 : 0xC6 – 0xC7, C2 : 0xDE – 0xDF,
C3 : 0xF6 – 0xF7]
This register sets the Source Port number for each channel when using TCP or UDP mode, and the set-up
needs to be made before executing the Sock_Init Command.
IPR (IP Protocol Register) [R/W, C0 : 0xB0, C1 : 0xC8, C2 : 0xE0, C3 : 0xF8]
This IP Protocol Register is used to be set up at the Protocol Field of IP Header when executing the IP Layer
RAW Mode, and the set-up needs to be made before executing the Sock_Init Command.
TOSR (TOS Register) [R/W, C0 : 0xB1, C1 : 0xC9, C2 : 0xE1, C3 : 0xF9]
This register is used to be set up at the TOS (Type Of Service) Field of IP Header, and the set-up needs to be
made before executing the Sock_Init Command.
MSSR (MSS Register) [R/W, C0 : B2 – 0xB3, C1 : 0xCA – 0xCB, C2 : 0xE2 – 0xE3, C3 : 0xFA –
0xFB]
This register is used for MSS (Maximum Segment Size) of TCP, and the register displays MSS set by the
other party when TCP is activated in Passive Mode.
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