Cypress Semiconductor Quad HOTLink II CYV15G0404RB Guía de usuario descargar pdf (Pagina 16)

Quad Independent Channel

HOTLink II™ CYV15G0404DXB

Video PHY Demonstration Board

Page 16 of 92

5.4 Transmit Test Pattern

For SD-SDI, the FPGA can be configured to generate EG1 Color Bar, SMPTE RP178 SDI checkfield, SMPTE RP178 Alternate

SDI checkfield, or Grey field patterns. For HD-SDI, the FPGA can be configured to generate Color Bar, SMPTE RP198 SDI

checkfield, SMPTE RP198 Alternate SDI checkfield, or Grey field patterns. The Maximum Cable Length (MCL) scroll bar should

be set to 300m for normal operating conditions. See Figure 5-6 for details.

Reclocker

The CYV15G0404DXB has an integrated reclocker function to reclock the recovered data from the clock and data recovery unit

and retransmit it through the serial outputs of the same channel. This can be set by selecting the Reclocker button. If both

Reclocker and Auto Rate Detect are selected, and the programmable clocking option is enabled, the auto rate detect logic will

detect the incoming data rate and reconfigure the clocks to perform reclocking function on the selected channel. See Figure 5-6

for a picture of the reclocker radio button.

5.5 Status

The status panel reflects the real time status of the board; the user has no control of this panel. The “Cable Length Indicator (CLI)”

estimates the length of the cable being used between a transmitter and the receiver on that channel. The “Cyclic Redundancy

Check (CRC) Errors” status bar indicates the number of errors detected after the received signal goes through the appropriate

cyclic redundancy check. The “Link Fault Indicator (LFI)” is asserted when the HOTLink II CYV15G0404DXB does not receive a

valid signal. The “Carrier Detect (CD)” is automatically checked when the amplitude of the incoming signal is greater than the

threshold. The “Auto Rate Locked” button is selected when the data rate for incoming data is detected and the clock is

programmed to the corresponding frequency.

Figure 5-5. GUI–Selecting the Standards–HD

Reclocking

Function

Figure 5-6. GUI–Selecting the Test Patterns

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Cypress Semiconductor Quad HOTLink II CYV15G0404RB Guía de usuario Pagina 16