TLK2711-SP: Clock Selection Criteria

Per the datasheet: "TXCLK is a continuous external input clock that synchronizes the transmitter interface signals TKMSB, TKLSB, and TXD0–TXD15. The frequency range of TXCLK is 80 to 125 MHz. The transmitter uses the rising edge of this clock to register the 16-bit input data TXD0 through TXD15 for serialization." The expectation is that device will have continuous TXCLK signal meeting the electrical performance criteria (both timing and amplitude) per the datasheet.

Related to the questions raised:

• Can we select the clock source "TXCLK" after the power on?
  • The clock signal to the TLK device may be enabled after power on
• Can we switch between the clocks at run time?
  • No, this is not a recommended use condition.
    
• Does the transceiver resets it's operation, if the clock source changed? Any other timing constraint to be taken care for above operationAny frequency/clock stabilization suggestion?
  • I would recommend to reset the TLK device if clock signal were switched
    

Cordially,

Rodrigo Natal

HSSC Applications Engineer