CYV15G0101EQ  
					SDI, SDI  
					CD/MUTE  
					The CYV15G0101EQ accepts single-ended or differential  
					serial video data streams over 75Ω coaxial cable. It is recom-  
					mended to AC-couple the SDI, SDI inputs as they are inter-  
					nally biased to 1.2V.  
					Carrier Detect/MUTE (CD/MUTE) is a bidirectional pin that  
					provides an indication of the signal being present at the  
					equalizer’s input, or it controls the muting of the equalizer’s  
					output. The (CD/MUTE) operates for both HD and SD data  
					rates.  
					SDO, SDO  
					If CD/MUTE is used as an output and the incoming data  
					stream is not present, the voltage at the CD/MUTE output will  
					be greater than 2.9V. If CD/MUTE is used as an output and the  
					incoming data stream is present, then the voltage at the  
					CD/MUTE output will be less than 0.8V.  
					The CYV15G0101EQ has differential serial output interface  
					drivers that use current mode logic [CML] drivers to provide  
					source matching for the transmission line. These outputs can  
					be either AC coupled or DC coupled to the HOTLink II SerDes  
					device.  
					If CD/MUTE is used as an input and is tied to ground, the  
					equalizer serial outputs are not muted and the MCLADJ  
					setting is overwritten. If the CD/MUTE is used as an input and  
					is tied to VCC, then the equalizer serial outputs are muted and  
					the MCLADJ setting is overwritten.  
					CLI  
					Cable Length Indicator (CLI) is an analog output that gives an  
					output voltage proportional to the cable length being  
					equalized. CLI gives an approximation of the length of cable  
					at the differential serial inputs (SDI, SDI). CLI works at high  
					definition (HD) data rates as well as standard definition (SD)  
					data rates. The graph in Figure 2 illustrates the CLI output  
					voltage at various Belden 1694A cable lengths. With an  
					increase in cable length, CLI output voltage decreases.  
					When an invalid signal or a signal transmitted with a launch  
					amplitude of less than 500 mV at HD data-rates is received,  
					the equalizer’s serial outputs are muted and the MCLADJ  
					setting is overwritten.  
					BYPASS  
					The CYV15G0101EQ has a bypass mode that allows the user  
					to bypass the equalizer’s equalization and DC restoration  
					functions. When the Bypass mode is tied to VCC, the signal  
					presented at the equalizer’s differential serial inputs (SDI, SDI)  
					is routed to the equalizer’s differential serial outputs (SDO,  
					SDO) without performing equalization.  
					MCLADJ  
					Maximum Cable Length Adjust (MCLADJ) sets the approx-  
					imate maximum amount of cable to be equalized. When the  
					maximum cable length set by MCLADJ is reached, the outputs  
					are muted. MCLADJ works at SD as well HD data rates.  
					When BYPASS is tied to GND, the incoming video data stream  
					is equalized and presented at the equalizer‘s differential serial  
					outputs (SDO, SDO).  
					If the MCLADJ voltage is greater than the CLI output voltage,  
					the equalizer serial differential outputs (SDO, SDO) are muted.  
					If the MCLADJ voltage is less than CLI voltage, then the  
					equalizer’s differential serial outputs (SDO, SDO) are not  
					muted and the incoming data stream is equalized. The graph  
					in Figure 1 illustrates the voltage needed at MCLADJ input to  
					equalize various Belden 1694A cable lengths for SD and HD  
					data rates. The MCLADJ pin can be left unconnected in appli-  
					cations that do not require muting of the outputs.  
					In equalizer bypass mode, CD/MUTE is not functional.  
					AGC  
					A capacitor of 1 µF should be placed between the AGC± pins  
					of the CYV15G0101EQ equalizer.  
					Document #: 001-04184 Rev. *D  
					Page 4 of 10  
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