Hi Mustafa,
What hardware revision WIZ107SR are you using?
The W7100 chip is applied to the old WIZ107SR Rev 1.1, and the W7100A chip is applied to Rev 1.4 which is currently in distribution. Please check this point.
The W7100A chip is a SoC with built-in TCP / IP stack logic. we called that TCP/IP stack logic is ‘Hardwired TCP/IP protocol stack’.
The chip is simply a MCU based on the 8051 core with Hardwired TCP/IP stack, and if you want to use it equally on the WIZ107SR, you should use the W7100A-S2E chip solution. The W7100A-S2E is a W7100A chip that is pre-programmed with the WIZ107SR module firmware.
The reasons why you should use the W7100A-S2E product are described in the following post.
