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请教一下关于AM5728 gpmc时序配置

Other Parts Discussed in Thread: AM5728

我们板子是用am5728,现在gpmc上面挂了一个arcnet芯片,读时序如下图:

写时序如下图:

根据5728的手册:

配置cs_on  = 15

cs_rd_off = t1 + t8+t2 (85ns)

cs_wr_off = t1 +t8 (35ns)

we_on = t10 (20ns)

we_off = t10+t8 (40ns)

oe_on = t10 (20ns)

oe_off = t10 + t8 (80ns)

rd_cycle = t8 + t9 (100ns)

wr_cycle = t8+t9 (40ns)

access = 100ns 

读取arcnet寄存器值不会。请问下我gpmc配置的哪个地方有问题