Microsemi DS3106DK, Руководство пользователя

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_________________________________________________________________________________________ DS3106DK
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DFS are configured for programmable DFS operation, the DIG1 and DIG2 fields change to display the
programmable DFS frequency with a “P” prefix.
FSYNC is an 8kHz output that can be configured as a 50% duty cycle clock or a frame pulse and can optionally be
inverted. MFSYNC is a 2kHz output that can be similarly configured.
Table 4-5. Mapping Between Output Clock Software Fields and DS3106 Register Fields
SOFTWARE FIELD DS3106 REGISTER FIELDS
DIG1 MCR6:DIG1SS, MCR7:DIG1F
DIG2 MCR6:DIG2SS, MCR7:DIG2F, MCR7:DIG2AF
OC3 and OC6 OCR2 and OCR3
FSYNC OCR4:FSEN, FSCR1:8KPUL, FSCR1:8KINV
MFSYNC OCR4:MFSEN, FSCR1:2KPUL, FSCR1:2KINV
4.7 DPLL Frequency Limits, Phase Detectors, DPLL Lock Criteria
The DPLL frequency limits specify the hard and soft limits of the T0 DPLL frequency range. When the selected
reference exceeds the soft limit, the
SOFTLIM LED turns red but the selected reference is not disqualified. If the
FLLOL (frequency limit loss of lock) box is checked in the DPLL LOCK CRITERIA box, when the selected
reference exceeds the hard limit the DPLL will lose lock (transition to LOL state).
The remaining fields are advanced topics. See Table 4-6 and the DS3106 data sheet for more details.
Table 4-6. Mapping Between DPLL Software Fields and DS3106 Register Fields
SOFTWARE FIELD DS3106 REGISTER FIELDS
MCPDEN PHLIM2:MCPDEN
USEMCPD PHLIM2:USEMCPD
D180 TEST1:D180
COARSELIM PHLIM2:COARSELIM
FINELIM PHLIM1:FINELIM
FLEN PHLIM1:FLEN
CLEN PHLIM2:CLEN
FLLOL DLIMIT3:FLLOL
NALOL PHLIM1:NALOL
HARD LIMIT HARDLIM[9:0] in DLIMIT1 and DLIMIT2
SOFT LIMIT DLIMIT3:SOFTLIM
4.8 REFCLK Calibration
Any known frequency error in the local oscillator can be calibrated out inside the DS3106 by setting the ppm value
in the
REFCLK CAL box. Also, the significant edge of the REFCLK signal can be selected in XOEDGE field.
Table 4-7. Mapping Between REFCLK Software Fields and DS3106 Register Fields
SOFTWARE FIELD DS3106 REGISTER FIELDS
REFCLK slider/text box MCLKFREQ[15:0] in MCLK1 and MCLK2
XOEDGE MCR3:XOEDGE