LMX2492: LMX2492 Readback (Using microWire/SPI)

Hello,

I am stuck with LMX2492. 

I can write the data into registers of LMX2492 but unable to readback.

My simple algorithm is as follows:

A. Write

Initial Conditions Clock = Data = low, LE = High, MSB of data = o,

Pull LE Low

Set the data on Data line

Pull clock high

Change the data on Data line

Pull clock low

.

.(Repeated for 24 bits of data(Address+data for LMX2492))

.

Pull LE high

B. Read

Initial Conditions Clock = Data = low, LE = High, MSB of data = 1,

Pull LE Low

Set the data on Data line

Pull clock high

Change the data on Data line

Pull clock low

.

.(Repeated for 16 bits of data(Address for LMX2492))

.

.

Pull Clock High

Read Data from Muxout pin (Repeat for 8 bits)

Pull Clock Low

Pull LE high

I verified the write by current change after enabling and disabling the PLL

But while reading, I find MUXout is always low(Using Oscilloscope as well). No activity on it at all.

Please help.