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Dear sir.

  Thanks for yours answer.

  Now i change a chip and get in connection.i read the device signature,it return "manufacture id :BF".i remeber that the PHILIPS product id maybe
15,it is correct i get ?

Dear sir.

   I alway can't connect to the p89v51rd2,it display "reset device into ISP mode now"with red color,i press the button of "RESET" to reset 89v51rd2,here nothing happened,why?i try 11.0592mhz and 12mhz,and set the baud rate with different value,the chip is a new onewithout any operation.i connect the cable's RXD(2) to a MAX232 in 14 pin,TXD(3) in 13 pin,and the MAX232's 12 pin connect to p89v51rd2's RXD(P3.0),and 11 pin to TXD(P3.1).
 Please give me some idea.

 Thanks.