參數(shù)資料
型號(hào)： CS2300P-DZZR
廠商： CIRRUS LOGIC INC
元件分類： PLL合成/DDS/VCOs
中文描述： PHASE LOCKED LOOP, 30 MHz, PDSO10
封裝： 3 MM, LEAD FREE, MO-187, MSOP-10
文件頁(yè)數(shù)： 13/26頁(yè)
文件大小： 434K
代理商： CS2300P-DZZR
CS2300-OTP
20
DS844F2
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
6.2
Ratio 0 - 3
The four 32-bit User Defined Ratios are stored in the CS2300’s one time programmable memory. See “Out-
page 22 for more details.
6.3
Global Configuration Parameters
6.3.1
AUX PLL Lock Output Configuration (AuxLockCfg)
When the AUX_OUT pin is configured as a lock indicator (AuxOutSrc[1:0] modal parameter = ‘11’), this
global parameter configures the AUX_OUT driver to either push-pull or open drain. It also determines the
polarity of the lock signal. If AUX_OUT is configured as a clock output, the state of this parameter is dis-
regarded.
Note:
AUX_OUT is an unlock indicator, signalling an error condition when the PLL is unlocked. There-
fore, the pin polarity is defined relative to the unlock condition.
6.3.2
Enable PLL Clock Output on Unlock (ClkOutUnl)
Defines the state of the PLL output during the PLL unlock condition.
6.3.3
Low-Frequency Ratio Configuration (LFRatioCfg)
Determines how to interpret the currently indexed 32-bit User Defined Ratio.
AuxOutSrc[1:0]
Auxiliary Output Source
00
Reserved.
01
CLK_IN.
10
CLK_OUT.
11
PLL Lock Status Indicator.
Application:
AuxLockCfg
AUX_OUT Driver Configuration
0
Push-Pull, Active High (output ‘high’ for unlocked condition, ‘low’ for locked condition).
1
Open Drain, Active Low (output ‘low’ for unlocked condition, high-Z for locked condition).
Application:
ClkOutUnl
Clock Output Enable Status
0
Clock outputs are driven ‘low’ when PLL is unlocked.
1
Clock outputs are always enabled (results in unpredictable output when PLL is unlocked).
Application:
LFRatioCfg
Ratio Bit Encoding Interpretation
0
20.12 - High Multiplier.
1
12.20 - High Accuracy.
Application:
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