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Si53xx-RM
88 Rev. 0.5
If a highly stable reference, such as an oven-controlled crystal oscillator (OCXO) is supplied at XA/XB, an
extremely stable digital hold can be achieved. If a crystal is supplied at the XA/XB port, the digital hold stability will
be limited by the stability of the crystal.
Table 42. Digital Hold History Delay
HIST_DEL[4:0] History Delay Time (ms) HIST_DEL[4:0] History Delay Time (ms)
00000 0.0001 10000 6.55
00001 0.0002 10001 13
00010 0.0004 10010 (default) 26
00011 0.0008 10011 52
00100 0.0016 10100 105
00101 0.0032 10101 210
00110 0.0064 10110 419
00111 0.01 10111 839
01000 0.03 11000 1678
01001 0.05 11001 3355
01010 0.10 11010 6711
01011 0.20 11011 13422
01100 0.41 11100 26844
01101 0.82 11101 53687
01110 1.64 11110 107374
01111 3.28 11111 214748
Table 43. Digital Hold History Averaging Time
HIST_AVG[4:0] History Averaging Time (ms) HIST_AVG[4:0] History Averaging Time (ms)
00000 0.0000 10000 26
00001 0.0004 10001 52
00010 0.001 10010 105
00011 0.003 10011 210
00100 0.006 10100 419
00101 0.012 10101 839
00110 0.03 10110 1678
00111 0.05 10111 3355
01000 0.10 11000 (default) 6711
01001 0.20 11001 13422
01010 0.41 11010 26844
01011 0.82 11011 53687
01100 1.64 11100 107374
01101 3.28 11101 214748
01110 6.55 11110 429497
01111 13 11111 858993