參數(shù)資料
型號(hào): SM3E-19.44M
廠商: Connor-Winfield
文件頁(yè)數(shù): 23/36頁(yè)
文件大?。?/td> 0K
描述: IC MOD TIMING 19.440MHZ STRAT 3E
標(biāo)準(zhǔn)包裝: 1
系列: SM3
類型: 定時(shí)模塊,系統(tǒng)時(shí)鐘
PLL:
主要目的: 以太網(wǎng),ADM,DSLAM,SONET/SDH,Stratum,TDM
輸入: LVCMOS
輸出: LVCMOS
電路數(shù): 1
比率 - 輸入:輸出: 8:3
差分 - 輸入:輸出: 無(wú)/無(wú)
頻率 - 最大: 19.44MHz
電源電壓: 3.135 V ~ 3.465 V
工作溫度: 0°C ~ 70°C
安裝類型: 通孔
封裝/外殼: 32-DIP 模塊
包裝: 管件
其它名稱: CW643
SM3E 19.44M
SM3E19.44M
SM3E Data Sheet #:
TM054
Page 3 of 36 Rev: 04 Date: 01/26/11
Copyright 2011 The Connor-Winfield Corp. All Rights Reserved
Specifications subject to change without notice
Specifications for Ultra Miniature Stratum 3E
Table 1
Parameter
Specification
Voltage
3.3V±5%
Power
3WMaximumduringstartup,1.5WTypical@roomtemperature
ReferenceFrequency1-8
8kHz-77.76MHz(Determinedbycustomer’sapplication)
CMOSOutputFrequency#1
8kHz-77.76MHz
M/S_Out
8kHz
BITS_Clk
1.544/2.048MHz(Selectable)
Master/SlaveI/O
8kHz
InputReferencePulseWidth
10nsMin@8kHz,5nsMin@>8kHz
FreeRunAccuracy
4.6ppm
HoldOverAccuracy
0.001ppm
HoldOverStability
0.012ppmforthefirst24hours
Dimensions
2.05x1.25x0.75inches(52.07x31.75x19.05mm)
Pin Description
Table 2
Pin#
I/O
PinName
PinDescription
1
O
LOS
AlarmOutput-LossofActiveReferenceSignal
2
O
LOL
AlarmOutput-LossofLock
3
I
M/SREF
Master/SlaveReferenceInput
4
I
REF1
ReferenceInput1–8kHzto77.76MHzautodetected
5
I
REF2
ReferenceInput2–8kHzto77.76MHzautodetected
6
I
REF3
ReferenceInput3–8kHzto77.76MHzautodetected
7
I
REF4
ReferenceInput4–8kHzto77.76MHzautodetected
8
TDI
JTAGTDIpin
9
TMS
JTAGTMSpin
10
TRST
JTAGTRSTpin
11
O
BITS_CLK
1.544or2.048MHzoutputselectedbypin14
12
O
M/S_OUT
Master/Slave8kHzoutput
13
O
OUTPUT1
SynchronousPrimaryOutput
14
VPP
PositiveProgrammingSupplyPin.Duringnormaloperation,itis
recommendedtofloatthispin.
15
I
REF5
ReferenceInput5–8kHzto77.76MHzautodetected
16
I
REF6
ReferenceInput6–8kHzto77.76MHzautodetected
17
I
REF8
ReferenceInput8–8kHzto77.76MHzautodetected
18
I
REF7
ReferenceInput7–8kHzto77.76MHzautodetected
19
VPN
NegativeProgrammingSupplyPin.Duringnormaloperation,itis
recommendedtofloatthispin.
20
I
T1/E1
BITS_CLKselectinput–1=1.544MHz,0=2.-48MHz,4.7kOhmPull-up
21
O
HOLD_GOOD
HoldoverGoodOutputFlag–1=HoldoverAvailable
22
TDO
JTAGTDOpin
23
TCK
JTAGTCKpin
24
GND
ModuleGround
25
I
SPI_CLK
SPIPortClockinput
26
I
SPI_IN
SPIPortDatainput
27
VCC
3.3VdcVCCSupplyInput
28
I
SPI_ENBL
SPIPortEnableinput–ActiveLow,4.7kOhmPull-up
29
I
RESET
ModuleReset–ActiveLow,4.7kOhmPull-up
30
O
SPI_OUT
SPIPortDataOutput
31
O
SPI_INT
SPIPortInterruptOutput
32
I
MASTERSELECT
Master/Slaveselectinput–1=Master,0=Slave
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