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GS2994 数据表(PDF) 5 Page - Gennum Corporation |
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GS2994 数据表(HTML) 5 Page - Gennum Corporation |
5 / 20 page GS2994 GS2994 Adaptive Cable Equalizer Data Sheet 53967 - 4 August 2012 5 of 20 8 SQ_ADJ Analog Input Squelch Threshold Adjust. Adjusts the input signal amplitude threshold of the carrier detect function. The output can be muted when the input signal amplitude is too low by connecting the CD and OP_CTL pins together through some external components. In this case, when CD is LOW (0V), OP_CTL is forced LOW (0V), and when CD is HIGH (2.5V), OP_CTL is forced HIGH (3.3V). The input level at which the part is muted can be set through the SQ_ADJ pin through suitable voltage variances as described in Section 4.4. NOTE: when the SQ_ADJ functionality is used and/or in auto_mute, the auto sleep feature is not allowed, and the SLEEP pin should be left open. Includes an internal pull-down resistor. 9OP_CTL Not Synchronous Input CONTROL SIGNAL INPUT Controls the Output Swing, De-emphasis, and Mute features of the SDO and SDO outputs. When connected to GND, the output swing is 800mV with no de-emphasis. When connected to the 3.3V analog power supply, the output is MUTED. Includes an internal pull down resistor. See Section 4.7 for all other control options. 10, 11 SDO, SDO Analog Output Equalized serial digital differential output. 12 VEE_O Analog Power Most negative power supply for the output buffer. Connect to GND. 13 VCC_O Analog Power Most positive power supply connection for the output buffer of the device. Connect to +1.2V ~ +3.3V DC. 14 SLEEP Not Synchronous Input CONTROL SIGNAL INPUT When set HIGH, the GS2994 is powered-down except for the Carrier Detect functionality. Includes an internal pull-down resistor. 15 CD Not Synchronous Output Carrier Detect status signal output. Signal levels are LVCMOS/LVTTL compatible. Indicates the presence of an input signal. When the CD pin is LOW, a good input signal has been detected. When this pin is HIGH, the input signal is invalid. See Section 4.5. 16 VCC_A Analog Power Most positive power supply for the input buffer, core and control circuits of the device. Connect to +3.3V DC. − Center Pad − Power Internally bonded to VEE_A. Table 1-1: GS2994 Pin Descriptions (Continued) Pin Number Name Timing Type Description |
类似零件编号 - GS2994 |
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类似说明 - GS2994 |
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