AT45DB161D program /read problem

hi all,
I am using AT45DB161D serial flash. I have some issue when write/read data to it.
I wrote the same data to all page of AT45DB161D but I receive difference result.
Here is result:
string written:
"122ysdsgxccbbvxmcbvjkdhjgksdhgjkfdhfksjdhkjhlkasjdlkasjdxcnbzxmcbnmxbcnmbcmxbcxmbmnbx"
string read:
page 0:
jgksdhgjkfdhfksjdhkjhlkasjdlkasjdxcnbzxmcbnmxbcnmbcmxbcxmbmnbx
page 1:
122ysdsgxccbbvxmcbvjkdhjgksdhgjkfdhfksjdhkjhlkasjdlkasjdxcnbzxmcbnmxbcnmbcmxbcxmbmnbx
page 2:
jgksdhgjkfdhfksjdhkjhlkasjdlkasjdxcnbzxmcbnmxbcnmbcmxbcxmbmnbx
page 3:
122ysdsgxccbbvxmcbvjkdhjgksdhgjkfdhfksjdhkjhlkasjdlkasjdxcnbzxmcbnmxbcnmbcmxbcxmbmnbx
page 4:
jgksdhgjkfdhfksjdhkjhlkasjdlkasjdxcnbzxmcbnmxbcnmbcmxbcxmbmnbx
page 5:
122ysdsgxccbbvxmcbvjkdhjgksdhgjkfdhfksjdhkjhlkasjdlkasjdxcnbzxmcbnmxbcnmbcmxbcxmbmnbx
page 6:
jgksdhgjkfdhfksjdhkjhlkasjdlkasjdxcnbzxmcbnmxbcnmbcmxbcxmbmnbx
page 7:
122ysdsgxccbbvxmcbvjkdhjgksdhgjkfdhfksjdhkjhlkasjdlkasjdxcnbzxmcbnmxbcnmbcmxbcxmbmnbx
...................................
seem errors loop
I cannot explain that. Pls help me,
Thank,

Can you show how to write and read?

Thank,
The reasons is page address. I have some mistake when set page address.