W6100 EVB has a bug!!!

TCP/IP Chip W6100
1

Hi,
I change SW1 in w6100 EVB to 0b10, because I want to access w6100 by parallel bus。And _WIZCHIP_IO_MODE has been set WIZCHIP_IO_MODE_BUS_INDIR. But no registers can be write or read by parallel bus.
So, what can I do to solve this problem.