參數(shù)資料
型號(hào): SI5317D-C-GM
廠商: Silicon Laboratories Inc
文件頁數(shù): 17/46頁
文件大小: 0K
描述: IC CLK JITTER CLEANR PROG 36QFN
應(yīng)用說明: SI5315/17 Crystal Selection AppNote
特色產(chǎn)品: Si5317 Jitter Cleaning Clock
標(biāo)準(zhǔn)包裝: 490
系列: DSPLL®
類型: 抖動(dòng)消除器
PLL: 帶旁路
輸入: 時(shí)鐘,晶體
輸出: CML,CMOS,LVDS,LVPECL
電路數(shù): 1
比率 - 輸入:輸出: 1:2
差分 - 輸入:輸出: 是/是
頻率 - 最大: 100MHz
除法器/乘法器: 無/無
電源電壓: 1.71 V ~ 3.63 V
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 36-VFQFN 裸露焊盤
供應(yīng)商設(shè)備封裝: 36-QFN(6x6)
包裝: 托盤
產(chǎn)品目錄頁面: 628 (CN2011-ZH PDF)
其它名稱: 336-1920
Si5317
24
Rev. 1.1
3.6. PLL Bypass Mode
The Si5317 supports a PLL bypass mode in which the selected input clock is fed directly to both enabled output
buffers, bypassing the DSPLL. Internally, the bypass path is implemented with high-speed signaling; however, this
path is not a low jitter path and will result in significantly higher jitter on CKOUT. In PLL bypass mode, the input and
output clocks will be at the same frequency. PLL bypass mode is useful as a debug tool. The DSBL2_BY pin is
used to select the PLL Bypass Mode according to Table 11. Bypass mode is not supported for CMOS clock
outputs.
Figure 6. Bypass Signal
Table 11. DSBL2/BYPASS Pin Settings
DSBL2/BYPASS
Function
L
CKOUT2 Enabled
M
CKOUT2 Disabled
H
PLL Bypass Mode w/ CKOUT2 Enabled
DSPLL
CKIN+
CKIN–
CKOUT+
CKOUT–
VDD (1.8, 2.5, or 3.3 V)
GND
RATE[1:0]
XA
XB
fOSC
f3
External Crystal or
Reference Clock
Voltage
Regulator with
High PSRR
CKOUT+
CKOUT–
DBL2_BY
SFOUT[1:0]
2
0
1
0
1
PLL Bypass
2
LOS
LOL
BWSEL[1:0]
FRQSEL[3:0]
RST
Frequency
Control
Bandwidth
Control
Alarms
Control
FRQTBL
Skew Control
INC
DEC
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