USB 8451 SPI : delay each 13 words

[ChristopheA]

Hello,

 

I'm using actually an USB 8451 for sending a package of 101 words of 16 bits word for a DAC.

for maximum speed, i'm using the script Vi.

My problem is that all data (101) are transmit but there is a delay (~1,5µs) beetween each package of 13 data.

inside each package, data are transmit with a 56µs period.

Do you now the cause of the problem ?

Is there a way to avoid this problem ?

 

Thanks.

[ChristopheA]

Oups sorry, There is an error in my first message.

Here is the corrected message : 

I'm using actually an USB 8451 for sending a package of 101 words of 16 bits word for a DAC.

for maximum speed, i'm using the script Vi.

My problem is that all data (101) are transmit but there is a delay (~1,5ms) beetween each package of 13 data.

inside each package, data are transmit with a 56µs period.

Do you now the cause of the problem ?

Is there a way to avoid this problem ?

Thanks.