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參數(shù)資料
| 型號(hào)： | MT8940 |
| 廠商： | Mitel Networks Corporation |
| 英文描述： | ISO-CMOS ST-BUS⑩ FAMILY T1/CEPT Digital Trunk PLL |
| 中文描述： | 異意法半導(dǎo)體的CMOS總線⑩家庭T1/CEPT數(shù)字集群鎖相環(huán) |
| 文件頁數(shù)： | 1/16頁 |
| 文件大?。?/td> | 299K |
| 代理商： | MT8940 |
3-27
Features
Provides T1 clock at 1.544 MHz locked to input
frame pulse
Sources CEPT (30+2) Digital Trunk/ST-BUS
clock and timing signals locked to internal or
external 8 kHz signal
TTL compatible logic inputs and outputs
Uncommitted 2-input NAND gate
Single 5 volt power supply
Low power ISO-CMOS technology
Applications
Synchronization and timing control for T1
and CEPT digital trunk transmission links
ST- BUS clock and frame pulse source
Description
The MT8940 is a dual digital phase-locked loop
providing the timing and synchronization signals for
the T1 or CEPT transmission links and the ST-BUS.
The first PLL provides the T1 clock (1.544 MHz)
synchronized to the input frame pulse at 8 kHz. The
timing signals for the CEPT transmission link and the
ST-BUS are provided by the second PLL locked to an
internal or an external 8 kHz frame pulse signal.
The MT8940 is fabricated in MITEL’s ISO-CMOS
technology.
Ordering Information
MT8940AE
24 Pin Plastic DIP (600 mil)
-40
°
C to +85
°
C
Figure 1 - Functional Block Diagram
F0i
C12i
MS0
MS1
MS2
MS3
C8Kb
C16i
Ai
Bi
Yo
V
DD
V
SS
RST
CVb
CV
ENCV
F0b
C4b
C4o
ENC4o
C2o
C2o
ENC2o
2:1 MUX
Variable
Clock
Control
Mode
Selection
Logic
DPLL #2
Input
Selector
Clock
Generator
Frame Pulse
Control
4.096 MHz
Clock
Control
2.048 MHz
Clock
Control
DPLL #1
ISSUE 8
March 1997
MT8940
T1/CEPT Digital Trunk PLL
ISO-CMOS ST-BUS
FAMILY
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MT8940-1 | ISO-CMOS ST-BUS⑩ FAMILY T1/CEPT Digital Trunk PLL |
| MT8940AC | T1/CEPT Digital Trunk PLL |
| MT8940AE | ISO-CMOS ST-BUS⑩ FAMILY T1/CEPT Digital Trunk PLL |
| MT8941B | Advanced T1/CEPT Digital Trunk PLL(先進(jìn)的T1/CEPT數(shù)字中繼鎖相環(huán)) |
| MT8941B | CMOS ST-BUS⑩ FAMILY Advanced T1/CEPT Digital Trunk PLL |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MT8940-1 | 制造商:MITEL 制造商全稱:Mitel Networks Corporation 功能描述:ISO-CMOS ST-BUS⑩ FAMILY T1/CEPT Digital Trunk PLL |
| MT8940AC | 制造商:MITEL 制造商全稱:Mitel Networks Corporation 功能描述:T1/CEPT Digital Trunk PLL |
| MT8940AE | 制造商:MITEL 功能描述: |
| MT8941 | 制造商:ZARLINK 制造商全稱:Zarlink Semiconductor Inc 功能描述:Advanced T1/CEPT Digital Trunk PLL |
| MT8941AE | 制造商:MITEL 制造商全稱:Mitel Networks Corporation 功能描述:CMOS ST-BUS⑩ FAMILY Advanced T1/CEPT Digital Trunk PLL |
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