Hi Team,
Our customer has some questions about DS90UB949 and 948 devices, please help to check:
1. How to calculate the real FPD-Link output data rate for DS90UB949?
2. Do we have the frequency spread spectrum function for DS90UB949?
3. For UH948 clock, does it come from FPD-Link cable? What's the real working frequency? Do we have the frequency spread spectrum function for LVDS output?
Thanks.
Hi Jacky,
How to calculate the real FPD-Link output data rate for DS90UB949?
For these devices, the FPD-Link rate is 35 * PCLK (e.g. a 50 MHz PCLK means a 1.75 Gbps FPD-Link rate for single-link)
Do we have the frequency spread spectrum function for DS90UB949?
The 949 can support spread spectrum on the input clock but not on the FPD-Link itself.
For UH948 clock, does it come from FPD-Link cable? What's the real working frequency? Do we have the frequency spread spectrum function for LVDS output?
Correct, the 948 clock comes from the FPD-Link and will be the frequency of the PCLK. The 948 does not have spread spectrum for the LVDS output.
Sincerely,
Ryan
