W3150 Datasheet, PDF (39/59 Pages) List of Unclassifed Manufacturers – WIZnet’s Online Technical Support

ESTABLISHED ?
The connection is established. It can be checked as below,
Check if CON bit value of Socket n Interrupt Register(Sn_IR) is ‘1’ or not. (In this case, if interrupt of
Socket n is activated, interrupt occurs. Refer to Interrupt Register (IR), Interrupt Mask Register
(IMR), and Socket n Interrupt Register (Sn_IR).
Or Check if the value of Socket n Socket Status Register(Sn_SSR) is SOCK_ESTABLISHED.
Timeout
Socket is closed as Timeout occurs as there is not response from remote peer. It can be checked as
below.
Check the value of TIMEOUT bit of Socket n Interrupt Register(Sn_IR) is ‘1’. (In this case, if the
interrupt of Socket n is activated, interrupt occurs. Refer to Interrupt Register (IR), Interrupt Mask
Register (IMR), Socket n Interrupt Register (Sn_IR).)
Or Check if the value of Socket n Socket Status Register(Sn_SSR) is SOCK_CLOSED.
ESTABLISHED
Refer to 5.2.1.1. SERVER (The operation is same as SERVER mode)
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