參數(shù)資料
型號(hào)： SM3-19.44M
廠商： Connor-Winfield
文件頁(yè)數(shù)： 8/36頁(yè)
文件大?。?/td> 0K
描述： IC MOD TIMING 19.440MHZ STATUM 3
標(biāo)準(zhǔn)包裝： 1
系列： SM3
類型： 定時(shí)模塊，系統(tǒng)時(shí)鐘
PLL： 是
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： 4:3
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： CW642
SM3 19.44M
SM319.44M
SM3 Data Sheet #:
TM052
Page 16 of 36 Rev: 06 Date:01/26/11
Copyright 2011 The Connor-Winfield Corp. All Rights Reserved
Specifications subject to change without notice
Register Descriptions and Operation continued
Intr_Event, 0x12 (R)
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Lossof
Activerefer-
DPLLMode M/SRef
M/SRef
Anyrefer-
Lock
Signal
encechange
status
Changefrom Changefrom
erencechange erencechange
change
noactivityto
activitytono
fromnot
fromavailable
activity
availableto
abletonot
available
Interrupt state = 1. When an enabled interrupt occurs, the
SPI_INT pin is asserted, active low. All interrupts are cleared
and the
SPI_INT pin pulled high when the register is read. Reset default is 0.
Intr_Enable, 0x13 (R/W)
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
EnableInter- EnableInter- EnableInter-
EnableInter- EnableInter-
EnableInter-
ruptevent7: ruptevent6: ruptevent5:
ruptevent4: ruptevent3:
ruptevent2:
ruptevent1:
ruptevent0:
1:Enable
0:Disable
Default:0
Enables or disables the corresponding interrupts from asserting the
SPI_INT pin. Interrupt events still appear in the Intr_
Event register independent of their “enable” state. Reset default is interrupts disabled.
Ref(1-4)_Frq_Offset, 0x14 ~ 0x17(R)
Bit 7 ~ Bit 0
2’scomplementvalueoffrequencyoffsetbetweenreferenceandcalibratedlocaloscillator,0.2ppmresolution
These registers indicate the frequency offset, in 0.2 ppm resolution, between each reference and the local calibrated oscillator.
0x14 - 0x17 correspond to Ref1 - Ref4.
Ref(1-4)_Frq_Priority, 0x1c ~ 0x1f (R/W)
Bit 7 ~ Bit 4
Bit 3
Bit 2 ~ Bit 0
Frequency
Revertivity
Priority
0000:None
1:revertive
0:highest
0001:8kHz
0:non-revertive
3:lowest
0010:1.544MHz
Default:0,
Default:0
0011:2.048MHz
nonrevertive
0100:12.96MHz
0101:19.44MHz
0110:25.92MHz
0111:38.88MHz
1000:51.84MHz
1001:77.76MHz
1010-1111:Reserved
BITS 2 - 0 indicate the priority of each reference for use in automatic reference selection mode (bit 1 of the Ctl_Mode
register =0). In manual reference selection mode (bit 1 of the Ctl_Mode register = 1), these BITS are read-only and will
contain either the reset default or values written when last in automatic reference selection mode. For equal priority
values, lower reference numbers have higher priority.
Bit 3 specifies if the reference is revertive or non-revertive in automatic reference selection mode. When a reference
fails, the next highest priority “available” (signal present, non-masked, and acceptable frequency offset) reference will
be selected. When a reference returns, it will be switched to only if it is of higher priority and the current active reference
is marked “Revertive”.
BITS 7 - 4 indicate the auto-detected frequency for each reference. Invalid frequencies may result in erroneous device
operation. If there is no activity on a reference, bits 7-4will be = 0000. Bits 7-4 are read only. 0x1c - 0x1f correspond
to Ref1 - Ref4.
相關(guān)PDF資料
PDF描述
SM3E-19.44M IC MOD TIMING 19.440MHZ STRAT 3E
SM802104UMG TR IC SYNTHESIZER 2CH 24-QFN
SM802105UMG TR IC SYNTHESIZER 2CH 24-QFN
SM802108UMG IC SYNTEHSIZER 156.25MHZ 24QFN
SM802109UMG TR IC SYNTHESIZER QUAD 100MHZ 24QFN
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
SM-31A100Kohm 制造商:Nidec Copal 功能描述:Potentiometer, cermet trimmer, multi-turn, 0.125W, 100Kohm
SM-31A100ohm 制造商:Nidec Copal 功能描述:Potentiometer, cermet trimmer, multi-turn, 0.125W, 100ohm
SM31A101 功能描述:TRIMMER 100 OHM 0.125W SMD RoHS:是 類別:電位計(jì)，可變電阻器 >> 微調(diào)器 系列:SM31 標(biāo)準(zhǔn)包裝:500 系列:Trimpot® TC86 - 開放框架 電阻（歐姆）:100k 功率（瓦特）:0.3W 容差:±20% 溫度系數(shù):±250ppm/°C 匝數(shù):單路 調(diào)節(jié)型:頂部調(diào)節(jié) 電阻材料:金屬陶瓷 安裝類型:通孔 端接類型:PC 引腳 包裝:散裝 尺寸/尺寸:方形 - 0.303" L x 0.268" W x 0.299" H（7.70mm x 6.80mm x 7.60mm） 其它名稱:TC86P-104
SM-31A101 制造商:Nidec Copal 功能描述:RES TRMR 100 OHM 20% 1/8W 5TURN 1.3MM J-HOOK SMD - Tape and Reel
SM31A102 功能描述:TRIMMER 1K OHM 0.125W SMD RoHS:是 類別:電位計(jì)，可變電阻器 >> 微調(diào)器 系列:SM31 標(biāo)準(zhǔn)包裝:500 系列:Trimpot® TC86 - 開放框架 電阻（歐姆）:100k 功率（瓦特）:0.3W 容差:±20% 溫度系數(shù):±250ppm/°C 匝數(shù):單路 調(diào)節(jié)型:頂部調(diào)節(jié) 電阻材料:金屬陶瓷 安裝類型:通孔 端接類型:PC 引腳 包裝:散裝 尺寸/尺寸:方形 - 0.303" L x 0.268" W x 0.299" H（7.70mm x 6.80mm x 7.60mm） 其它名稱:TC86P-104
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

*
*
*