參數(shù)資料
型號(hào): CS2200-CP-CZZR
廠商: CIRRUS LOGIC INC
元件分類: XO, clock
英文描述: PHASE LOCKED LOOP, 75 MHz, PDSO10
封裝: 3 MM, LEAD FREE, MO-187, MSOP-10
文件頁(yè)數(shù): 6/26頁(yè)
文件大?。?/td> 307K
代理商: CS2200-CP-CZZR
CS2200-CP
14
DS759PP1
5.3
PLL Clock Output
The PLL clock output pin (CLK_OUT) provides a buffered version of the output of the frequency synthesizer.
The driver can be set to high-impedance with the ClkOutDis bit.
The output from the PLL automatically drives a static low condition while the PLL is un-locked (when the
clock may be unreliable). This feature can be disabled by setting the ClkOutUnl bit, however the state
CLK_OUT may then be unreliable during an unlock condition.
Figure 8. PLL Clock Output Options
5.4
Auxiliary Output
The auxiliary output pin (AUX_OUT) can be mapped, as shown in Figure 9, to one of three signals: refer-
ence clock (RefClk), additional PLL clock output (CLK_OUT), or a PLL lock indicator (Lock). The mux is con-
trolled via the AuxOutSrc[1:0] bits. If AUX_OUT is set to Lock, the AuxLockCfg bit is then used to control
the output driver type and polarity of the LOCK signal (see section 8.6.1 on page 22). If AUX_OUT is set to
CLK_OUT the phase of the PLL Clock Output signal on AUX_OUT may differ from the CLK_OUT pin. The
driver for the pin can be set to high-impedance using the AuxOutDis bit.
Figure 9. Auxiliary Output Selection
Referenced Control
Register Location
ClkOutDis .............................. “PLL Clock Output Disable (ClkOutDis)” on page 20
Referenced Control
Register Location
AuxOutDis .............................“Auxiliary Output Disable (AuxOutDis)” on page 19
PLL Locked/Unlocked
PLL Output
2:1 Mux
ClkOutDis
2:1 Mux
ClkOutUnl
0
PLL Clock Output Pin
(CLK_OUT)
0
1
0
1
PLL Clock Output
PLLClkOut
3:1 Mux
Auxiliary Output Pin
(AUX_OUT)
AuxOutDis
AuxOutSrc[1:0]
AuxLockCfg
Timing Reference Clock
(RefClk)
PLL Clock Output
(PLLClkOut)
PLL Lock/Unlock Indication
(Lock)
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