参数资料
型号: SI5323-C-GM
厂商: Silicon Laboratories Inc
文件页数: 25/40页
文件大小: 0K
描述: IC MULTIPLIER/ATTENUATOR 36-QFN
标准包装: 490
系列: DSPLL®
类型: 时钟乘法器
PLL:
输入: 时钟
输出: CML,CMOS,LVDS,LVPECL
电路数: 1
比率 - 输入:输出: 2:2
差分 - 输入:输出: 是/是
频率 - 最大: 1.05GHz
除法器/乘法器: 无/是
电源电压: 1.71 V ~ 3.63 V
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 36-VFQFN 裸露焊盘
供应商设备封装: 36-QFN(6x6)
包装: 托盘
Si5323
Rev. 1.0
31
21
CS_CA
I/O
LVCMOS
Input Clock Select/Active Clock Indicator.
Input
: If manual clock selection mode is chosen
(AUTOSEL = L), this pin functions as the manual input
clock selector. This input is internally deglitched to
prevent inadvertent clock switching during changes in
the CS input state.
0 = Select CKIN1
1 = Select CKIN2
If configured as an input, this pin must be set high or
low.
Output
: If automatic clock selection mode is chosen
(AUTOSEL = M or H), this pin indicates which of the
two input clocks is currently the active clock. If alarms
exist on both CKIN1 and CKIN2, indicating that the
digital hold state has been entered, CA will indicate
the last active clock that was used before entering the
hold state.
0 = CKIN1 active input clock
1 = CKIN2 active input clock
23
22
BWSEL1
BWSEL0
I
3-Level
Bandwidth Select.
Three level inputs that select the DSPLL closed loop
bandwidth. Detailed operations and timing characteristics for
these pins may be found in the Any-Frequency Precision
Clock Family Reference Manual.
These pins have both weak pull-ups and weak pull-downs
and default to M.
Some designs may require an external resistor voltage
divider when driven by an active device that will tri-state.
27
26
25
24
FRQSEL3
FRQSEL2
FRQSEL1
FRQSEL0
I
3-Level
Multiplier Select.
www.silabs.com/timing (click on Documentation).
These pins have both weak pull-ups and weak pull-downs
and default to M.
Some designs may require an external resistor voltage
divider when driven by an active device that will tri-state.
29
28
CKOUT1–
CKOUT1+
OMulti
Clock Output 1.
Differential output clock with a frequency selected from a
table of values. Output signal format is selected by SFOUT
pins. Output is differential for LVPECL, LVDS, and CML
compatible modes. For CMOS format, both output pins drive
identical single-ended clock outputs.
Table 12. Si5323 Pin Descriptions (Continued)
Pin #
Pin Name
I/O
Signal Level
Description
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