參數(shù)資料
型號(hào)： CS2200P-DZZR
廠商： CIRRUS LOGIC INC
元件分類： PLL合成/DDS/VCOs
中文描述： PHASE LOCKED LOOP, 56 MHz, PDSO10
封裝： 3 MM, LEAD FREE, MO-187, MSOP-10
文件頁(yè)數(shù)： 24/24頁(yè)
文件大小： 177K
代理商： CS2200P-DZZR
CS2200-OTP
DS842F2
9
5. APPLICATIONS
5.1
One Time Programmability
The one time programmable (OTP) circuitry in the CS2200-OTP allows for pre-configuration of the device
prior to use in a system. There are two types of parameters that are used for device pre-configuration: modal
and global. The modal parameters are features which, when grouped together, create a modal configuration
set (see Figure 10 on page 17). Up to four modal configuration sets can be permanently stored and then
dynamically selected using the M[1:0] mode select pins (see Table 1). The global parameters are the re-
maining configuration settings which do not change with the mode select pins. The modal and global pa-
rameters can be pre-set at the factory or user programmed using the customer development kit, CDK2000;
Please see “Programming Information” on page 21 for more details.
Table 1. Modal and Global Configuration
5.2
Timing Reference Clock Input
The low jitter timing reference clock (RefClk) can be provided by either an external reference clock or an
external crystal in conjunction with the internal oscillator. In order to maintain a stable and low-jitter PLL out-
put the timing reference clock must also be stable and low-jitter; the quality of the timing reference clock
directly affects the performance of the PLL and hence the quality of the PLL output.
5.2.1
Internal Timing Reference Clock Divider
The Internal Timing Reference Clock (SysClk) is limited to a lower maximum frequency than that allowed
on the XTI/REF_CLK pin. The CS2200-OTP supports the wider external frequency range by offering an
internal divider for RefClk. The RefClkDiv[1:0] global parameter should be configured such that SysClk,
the divided RefClk, then falls within the valid range as indicated in “AC Electrical Characteristics” on
page 7.
It should be noted that the maximum allowable input frequency of the XTI/REF_CLK pin is dependent
upon its configuration as either a crystal connection or external clock input. See the “AC Electrical Char-
acteristics” on page 7 for more details.
For the lowest possible output jitter, attention should be paid to the absolute frequency of the Timing Ref-
erence Clock relative to the PLL Output frequency (CLK_OUT). To minimize output jitter, the Timing Ref-
erence Clock frequency should be chosen such that fRefClk is at least +/-15 kHz from fCLK_OUT*N/32
where N is an integer. Figure 4 shows the effect of varying the RefClk frequency around fCLK_OUT*N/32.
It should be noted that there will be a jitter null at the zero point when N = 32 (not shown in Figure 4). An
Parameter Type
M[1:0] pins = 00
M[1:0] pins = 01
M[1:0] pins = 10
M[1:0] pins = 11
Modal
Configuration Set 0
Ratio 0
Configuration Set 1
Ratio 1
Configuration Set 2
Ratio 2
Configuration Set 3
Ratio 3
Global
Configuration settings set once for all modes.
Figure 3. Internal Timing Reference Clock Divider
N
Internal Timing
Reference Clock
PLL Output
Fractional-N
Frequency
Synthesizer
Timing Reference
Clock Divider
÷1
÷2
÷4
XTI/REF_CLK
RefClkDiv[1:0]
8 MHz < SysClk < 14 MHz
8 MHz < RefClk <
Timing Reference Clock
50 MHz (XTI)
58 MHz (REF_CLK)
相關(guān)PDF資料
PDF描述
CS2300P-DZZR
CS3511-CNZR
CS35L00-CNZ
CS4207-DNZR
CS4207-DNZ
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
CS220-10B 制造商:CENTRAL 制造商全稱:Central Semiconductor Corp 功能描述:SILICON CONTROLLED RECTIFIER 10 AMP, 200 THRU 800 VOLTS
CS220-10D 制造商:CENTRAL 制造商全稱:Central Semiconductor Corp 功能描述:SILICON CONTROLLED RECTIFIER 10 AMP, 200 THRU 800 VOLTS
CS220-10M 制造商:CENTRAL 制造商全稱:Central Semiconductor Corp 功能描述:SILICON CONTROLLED RECTIFIER 10 AMP, 200 THRU 800 VOLTS
CS220-10N 制造商:CENTRAL 制造商全稱:Central Semiconductor Corp 功能描述:SILICON CONTROLLED RECTIFIER 10 AMP, 200 THRU 800 VOLTS
CS220-12B 制造商:CENTRAL 制造商全稱:Central Semiconductor Corp 功能描述:SILICON CONTROLLED RECTIFIER 12 AMP, 200 THRU 1000 VOLTS
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*