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TMS570LS1224: MIBSPI clock Issue

Part Number: TMS570LS1224
Other Parts Discussed in Thread: HALCOGEN,

I am currently using TMS570LS1224 device and configure using HalCogen and CCS.

I am using MIBSPI3 and require a WDELAY of 50uS for a slave device. So, I selected the external clock as shown in the image. But, I am not getting the desired delay timing and also not getting the SCLK

of 4kHz frequency as set as VCLK1.

I am getting SCLK -> 312.5kHz  and WDELAY of 3.125uS in hardware.

Please tell me where am i going wrong and how to get SCLK as desired set point SCLK as 4kHz and WDELAY of 50uS.

So, I had selected the OSC as ''Standarad src'' .

Enabled WDELAY