參數(shù)資料
型號(hào)： MT9045AN
廠商： ZARLINK SEMICONDUCTOR INC
元件分類(lèi)： 通信及網(wǎng)絡(luò)
英文描述： T1/E1/OC3 System Synchronizer
中文描述： SPECIALTY TELECOM CIRCUIT, PDSO48
封裝： 0.300 INCH, MO-118AA, SSOP-48
文件頁(yè)數(shù)： 5/34頁(yè)
文件大?。?/td> 495K
代理商： MT9045AN
MT9045
Data Sheet
5
Zarlink Semiconductor Inc.
Functional Description
The MT9045 is a Multitrunk System Synchronizer, providing timing (clock) and synchronization (frame) signals to
interface circuits for T1 and E1 Primary Rate Digital Transmission links. Figure 1 is a functional block diagram which
is described in the following sections.
Reference Select MUX Circuit
The MT9045 accepts two simultaneous reference input signals and operates on their falling edges. Either the
primary reference (PRI) signal or the secondary reference (SEC) signal can be selected as input to the TIE
Corrector Circuit. The selection is based on the Control, Mode and Reference Selection of the device. See Table 1
and Table 4.
Frequency Select MUX Circuit
The MT9045 operates with one of four possible input reference frequencies (8kHz, 1.544MHz, 2.048MHz or
19.44MHz). The frequency select inputs (FS1 and FS2) determine which of the four frequencies may be used at
the reference inputs (PRI and SEC). Both inputs must have the same frequency applied to them. A reset (RST)
must be performed after every frequency select input change. See Table 1.
Table 1 - Input Frequency Selection
Time Interval Error (TIE) Corrector Circuit
The TIE corrector circuit, when enabled, prevents a step change in phase on the input reference signals (PRI or
SEC) from causing a step change in phase at the input of the DPLL block of Figure 1.
During reference input rearrangement, such as during a switch from the primary reference (PRI) to the secondary
reference (SEC), a step change in phase on the input signals will occur. A phase step at the input of the DPLL
would lead to unacceptable phase changes in the output signal.
44
TDO
Test Serial Data Out (CMOS Output).
JTAG serial data is output on this pin on the falling
edge of TCK. This pin is held in high impedance state when JTAG scan is not enable.
45
TDI
Test Serial Data In (Input).
JTAG serial test instructions and data are shifted in on this pin.
This pin is internally pulled up to V
DD
.
Test Reset (Input).
Asynchronously initializes the JTAG TAP controller by putting it in the
Test-Logic-Reset state. If not used, this pin should be held low.
46
TRST
47
TCK
Test Clock (Input):
Provides the clock to the JTAG test logic. This pin is internally pulled up to
V
DD
.
Test Mode Select (Input).
JTAG signal that controls the state transitions of the TAP
controller. This pin is internally pulled up to V
DD
.
48
TMS
FS2
FS1
Input Frequency
0
0
19.44MHz
0
1
8kHz
1
0
1.544MHz
1
1
2.048MHz
Pin Description (continued)
Pin #
Name
Description
相關(guān)PDF資料
PDF描述
MT9046 T1/E1 System Synchronizer with Holdover
MT9046AN T1/E1 System Synchronizer with Holdover
MT90503 2048VC AAL1 SAR
MT90503AG CLIP, STRAIN RELIEF, 50WAY; For use with:820 Series Tripolarized Wiremount Sockets; Ways, No. of:50; Material:Metal; Connector type:Strain Relief RoHS Compliant: Yes
MT90520 8-Port Primary Rate Circuit Emulation AAL1 SAR
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MT9045AN1 制造商:Microsemi Corporation 功能描述:FRAMER E1/OC3/T1 3.3V 48SSOP - Rail/Tube 制造商:Microsemi Corporation 功能描述:T1/E1/OC3 SYSTEM SYNCHRONIZER
MT9045ANR1 制造商:Microsemi Corporation 功能描述:FRAMER E1/OC3/T1 3.3V 48SSOP - Tape and Reel 制造商:Microsemi Corporation 功能描述:iB FREE T1/E1/OC3 SYSTEM SYNCHRONIZER 制造商:Zarlink Semiconductor Inc 功能描述:FRAMER E1/OC3/T1 3.3V 48SSOP - Tape and Reel
MT9046 制造商:ZARLINK 制造商全稱(chēng):Zarlink Semiconductor Inc 功能描述:SONET/SDH Clock Multiplier PLL
MT9046AN 制造商:Microsemi Corporation 功能描述:
MT9046AN1 制造商:Microsemi Corporation 功能描述:FRAMER E1 /T1 3.3V 48SSOP - Rail/Tube 制造商:MICROSEMI CONSUMER MEDICAL PRODUCT GROUP 功能描述:IC SYNCHRONIZER T1/E1 48SSOP 制造商:Microsemi Corporation 功能描述:IC SYNCHRONIZER T1/E1 48SSOP
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(xiě)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

*
*
*