Cirrus Logic CS2000-OTP - Manual (Page 23)

CS2000-OTP
DS758F2 23
6.1.2 Auxiliary Output Source Selection (AuxOutSrc[1:0])
Selects the source of the AUX_OUT signal.
Note: When set to 11, the AuxLockCfg global parameter sets the polarity and driver type ( “AUX PLL
Lock Output Configuration (AuxLockCfg)” on page 24 ).
6.1.3 Lock Clock Ratio (LockClk[1:0])
Selects one of the four stored User Defined Ratios for use in the dynamic ratio based Hybrid PLL Mode.
Note: The User Defined Ratio for the static ratio based Frequency Synthesizer mode is the ratio that
corresponds with the currently chosen configuration set as shown in Figure 17 on page 22 .
6.1.4 Fractional-N Source for Frequency Synthesizer (FracNSrc)
Selects static or dynamic ratio mode when auto clock switching is disabled.
6.2 Ratio 0 - 3
The four 32-bit User Defined Ratios are stored in the CS2000’s one time programmable memory. See “Out-
put to Input Frequency Ratio Configuration” on page 14 and “Calculating the User Defined Ratio” on
page 26 for more details.
AuxOutSrc[1:0] Auxiliary Output Source
00 RefClk.
01 CLK_IN.
10 CLK_OUT.
11 PLL Lock Status Indicator.
Application: “Auxiliary Output” on page 18
LockClk[1:0] CLK_IN Ratio Selection
00 Ratio 0.
01 Ratio 1.
10 Ratio 2.
11 Ratio 3.
Application: Section 5.4.2 on page 14
FracNSrc Fractional-N Source Selection
0 Static Ratio directly from R
EFF
for Frequency Synthesizer Mode
1 Dynamic Ratio from Digital PLL for Hybrid PLL Mode
Application: “Fractional-N Source Selection” on page 15