Datenblatt-Suchmaschine für elektronische Bauteile |
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GS1535 Datenblatt(PDF) 5 Page - Gennum Corporation |
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GS1535 Datenblatt(HTML) 5 Page - Gennum Corporation |
5 / 22 page GS1535 Data Sheet 18557 - 8 February 2005 5 of 22 24, 25, 26 SS[2:0] BIDIRECTIONAL When AUTO/MAN is HIGH, SS[0:2] are outputs, displaying the data rate to which the PLL has locked. When AUTO/MAN is LOW, SS[0:2] are inputs, forcing the PLL to lock only to a selected data rate. 27 ASI/177 LOGIC INPUT Disables 177Mbps data rate in the AUTO data rate detection circuit. This prevents a FALSE LOCK to 177Mbps when using DVB/ASI. 28 LD OUTPUT LOCK DETECT. HIGH when the PLL is locked. 29 RSVD RESERVED DO NOT CONNECT. 33 SD/HD OUTPUT This signal is LOW when the reclocker has locked to 1.485Gbps or 1.485/1.001Gbps, and HIGH when the reclocker has locked to 143Mbps, 177Mbps, 270Mbps, 360Mbps, or 540Mbps. 34 KBB ANALOG INPUT Controls the loop bandwidth of the PLL. Leave this pin floating for serial reclocking applications. 36 DDO_MUTE LOGIC INPUT Mutes the DDO/DDO outputs, when not in bypass mode. 44, 46 DDO, DDO OUTPUT Differential Serial Digital Outputs. 45 DDO_VTT PASSIVE Center tap of two 50 Ω on-chip termination resistors between DDO and DDO.. 50, 51 XTAL_OUT+, XTAL_OUT- OUTPUT Differential buffered outputs of the reference oscillator. 52, 53 XTAL+, XTAL- INPUT Reference crystal input. Connect to the GO1535. 62, 63 LF+, LF- PASSIVE Loop filter capacitor connection. (CLF = 47nF). 4, 8, 12,16, 32, 35, 37, 43, 49, 54, 64 GND PASSIVE Recommended connect to GND. 43 GND_DRV PASSIVE Recommended connect to GND. Table 1-1: Pin Descriptions (Continued) Pin Number Name Type Description SS2 SS1 SS0 DATA RATE SELECTED/FORCED (Mb/s) 0 0 0 143 0 0 1 177 0 1 0 270 0 1 1 360 1 0 0 540 1 0 1 1483.5/1485 |
Ähnliche Teilenummer - GS1535 |
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Ähnliche Beschreibung - GS1535 |
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