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SI5321-H-GL Scheda tecnica(PDF) 7 Page - Silicon Laboratories |
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SI5321-H-GL Scheda tecnica(HTML) 7 Page - Silicon Laboratories |
7 / 34 page Si5321 Rev. 2.5 7 Table 3. AC Characteristics (VDD33 =3.3 V ±5%, TA = –20 to 85 °C) Parameter Symbol Test Condition Min Typ Max Unit Input Clock Frequency (CLKIN) FEC[2:0] = 000 (non FEC) INFRQSEL[2:0] = 001 INFRQSEL[2:0] = 010 INFRQSEL[2:0] = 011 INFRQSEL[2:0] = 100 INFRQSEL[2:0] = 101 INFRQSEL[2:0] = 110 fCLKIN No FEC Scaling, FXDDELAY = 1 19.436 38.872 77.744 155.48 310.97 621.95 — — — — — — 21.685 43.369 86.738 173.48 346.95 693.90 MHz Input Clock Frequency (CLKIN) FEC[2:0] = 001 (forward FEC) INFRQSEL[2:0] = 001 INFRQSEL[2:0] = 010 INFRQSEL[2:0] = 011 INFRQSEL[2:0] = 100 INFRQSEL[2:0] = 101 INFRQSEL[2:0] = 110 fCLKIN 255/238 FEC Scaling, FXDDELAY = 1 18.142 36.284 72.568 145.13 290.27 580.54 — — — — — — 20.239 40.478 80.955 161.91 323.82 647.64 MHz Input Clock Frequency (CLKIN) FEC[2:0] = 010 (reverse FEC) INFRQSEL[2:0] = 001 INFRQSEL[2:0] = 010 INFRQSEL[2:0] = 011 INFRQSEL[2:0] = 100 INFRQSEL[2:0] = 101 INFRQSEL[2:0] = 110 fCLKIN 238/255 FEC Scaling, FXDDELAY = 1 20.826 41.652 83.305 166.61 333.22 666.44 — — — — — — 23.234 46.465 92.934 185.87 371.74 743.47 MHz Input Clock Frequency (CLKIN) FEC[2:0] = 100 (forward FEC) INFRQSEL[2:0] = 001 INFRQSEL[2:0] = 010 INFRQSEL[2:0] = 011 INFRQSEL[2:0] = 100 INFRQSEL[2:0] = 101 INFRQSEL[2:0] = 110 fCLKIN 255/237 FEC Scaling Minimum input frequency is in the 155 MHz range, FXDDELAY = 1 N/A N/A N/A 144.52 289.05 578.11 N/A N/A N/A — — — N/A N/A N/A 161.23 322.46 644.92 MHz Input Clock Frequency (CLKIN) FEC[2:0] = 101 (reverse FEC) INFRQSEL[2:0] = 001 INFRQSEL[2:0] = 010 INFRQSEL[2:0] = 011 INFRQSEL[2:0] = 100 INFRQSEL[2:0] = 101 INFRQSEL[2:0] = 110 fCLKIN 237/255 FEC Scaling Minimum input frequency is in the 155 MHz range, FXDDELAY = 1 N/A N/A N/A 167.31 334.62 669.25 N/A N/A N/A — — — N/A N/A N/A 186.66 373.31 746.61 MHz Note: The Si5321 provides a 1/32x, 1/16x, 1/8x, 1/4x, 1/2x, 1x, 2x, 4x, 8x, 16x, 32x, 64x, or 128x clock multiplication function with an option for additional frequency scaling by a factor of 255/238, 238/255, 255/237, 237/255, 66/64, or 64/66 for FEC rate conversion. |
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