communicate with tlc 5620

Other Parts Discussed in Thread: TLC5620hi i am using atmel 89s52 to work with tlc 5620 however i am not able to get the analog out put according to my source code written as follows I AM USING 12MHz CRYSTAL MCU NO 89S52 AT REFA 2.5V REFB 3.25V REFC 2.5V REFD 2.5V 5620PIN MCUPIN CLK AT P2.1 DATA AT P2.2 LOAD AT P2.6 LDAC AT P2.7 I HAVE TO SEND 0FF (255) TO SELECT 2.5V X 2 = 5 V CLR LDAC DACOUT1: SETB CLK CLR DATA SEND 0 TO DATA TO SELECT DACA MSB DELAY 10US CLR CLK DELAY 10US SETB CLK CLR DATA SEND 0 TO DATA TO SELECT DAC A LSB DELAY 10US CLR CLK DELAY10US SETB CLK SETB DATA SEND 1 TO SELECT RNG X2 DELAY 10US CLR CLK DELAY 10US SETB CLK SETB DATA SEND DATA 1 DELAY 10US CLR CLK DELAY 10US SETB CLK SETB DATA SEND DATA 1 DELAY 10US CLR CLK DELAY 10US SETB CLK SETB DATA SEND DATA 1 DELAY 10US CLR CLK DELAY 10US SETB CLK SETB DATA SEND DATA 1 DELAY 10US CLR CLK DELAY 10US SETB CLK SETB DATA SEND DATA 1 DELAY 10US CLR CLK SETB CLK SETB DATA SEND DATA 1 DELAY 10US CLR CLK DELAY 10US SETB CLK SETB DATA SEND DATA 1 DELAY 10US CLR CLK DELAY 10US SETB CLK SETB DATA SEND DATA 1 DELAY 10US CLR CLK ; ALL REF A SELECTED RNG BIT SELECTED AND DATA 11111111 ALSO SEND TO TLC5620 DELAY 250US CLR LOAD DELAY 25US SETB LOAD Delay 25us Clr clk Delay 10us Setb clk ; NOW AS THE LDAC IS LOW WHEN THERE IS LOW AT LOAD THE IS RTANSFEERED FROM SERIAL INPUT TO A DAC AND TO THE OUT PUT PIN DAC A ;BUT I AM NOT ABLE TO GET THE VALUE ACCORDING TO MY DIGITAL VALUE