DS3105DK Maxim Integrated Products, DS3105DK Datasheet - Page 12

• Manufacturer Part Number: DS3105DK
• Description: Power Management Modules & Development Tools Demo Kit for DS3105 Demo Kit for DS3105
• Manufacturer: Maxim Integrated Products

Specifications of DS3105DK

• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

The T4MT0 checkbox is an advanced topic. See
the More button opens another window
Figure 4-4. Software T4 DPLL Software
Table 4-3. Mapping Between T4 DPLL Software Fields and DS3105 Register Fields
4.5
The Input Freq field configures the frequency of the T0 APLL DFS (refer to the DS3105 data sheet for details). The
APLL output frequency is always four times the input frequency. When the Input Freq field is changed, the Output
Freq field changes to match, and all the T0 options in the output clock combo boxes also change to frequencies
derived from the new T0 APLL frequency. These changes match what happens in the DS3105.
In normal operation the T0 APLL2 has a fixed output frequency of 312.5MHz (twice the standard XGMII clock rate).
The rate is displayed in the T0 APLL2 Output Freq text box.
Whenever the T0 APLL DFS or the T0 APLL2 DFS are configured for programmable DFS operation (see Section
4.10), their respective Input Freq and Output Freq fields specify their frequencies with a “P” prefix to indicate that
programmable DFS mode is enabled.
Table 4-4. Mapping Between T0 APLL Software Fields and DS3105 Register Fields
Rev: 012808
_________________________________________________________________________________________DS3105DK
MAIN WINDOW
SUBWINDOW
T0 APLL and T0 APLL2
PHASE DETECTOR (PD2) Enable
SOFTWARE FIELD
SOFTWARE FIELD
Output Freq
Input Freq
SOFTLIM
CLK SEL
PD2G8K
STATE
T4MT0
DAMP
LOCK
PD2G
BW
(Figure
4-4) with additional T4 DPLL configuration and status fields.
Table 4-3
and the DS3105 data sheet for more details. Clicking
Derived by software from Input Freq
DS3105 REGISTER FIELDS
DS3105 REGISTER FIELDS
OPSTATE:T4LOCK
OPSTATE:T4SOFT
T0CR1:T0FREQ
MCR4:T4FORCE
T4CR2:PD2G8K
MSR3:T4LOCK
T4CR3:PD2EN
T0CR1:T4MT0
T4CR2:DAMP
T4CR3:PD2G
T4BW
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