- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄383643 > MT8979AC (Mitel Networks Corporation) Ultraframer DS3/E3/DS2/E2/DS1/E1/DS0 PDF資料下載
參數(shù)資料
| 型號： | MT8979AC |
| 廠商： | Mitel Networks Corporation |
| 元件分類： | 通信及網(wǎng)絡(luò) |
| 英文描述： | Ultraframer DS3/E3/DS2/E2/DS1/E1/DS0 |
| 中文描述： | Ultraframer DS3/E3/DS2/E2/DS1/E1/DS0 |
| 文件頁數(shù)： | 3/26頁 |
| 文件大?。?/td> | 340K |
| 代理商： | MT8979AC |
第1頁第2頁當(dāng)前第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁
ISO-CMOS
MT8979
4-163
13
20
E8Ko
Extracted 8 kHz Clock (Output)
: An 8 kHz output generated by dividing the extracted
2048 kHz clock by 256 and aligning it with the received CEPT frame. The 8 kHz signal
can be used for synchronizing the system clock to the extracted 2048 kHz clock. Only
valid when device achieves synchronization (goes low during a loss of signal or a loss
of basic frame synchronization condition).
E8Ko goes high impedance when 8kHzSEL = 0 in MCW2.
15
23
XCtl
External Control (Output):
An uncommitted external output pin which is set or reset
via bit 1 in Master Control Word 2 on CSTi0. The state of XCtl is updated once per
frame.
16
24
XSt
External Status
: The state of this pin is sampled once per frame and the status is
reported in bit 1 of the Master Status Word 1 on CSTo.
17
26
CSTo
Control ST-BUS Output
: A 2048 kbit/s serial control stream which provides the 16
signalling words, two Master Status Words, Phase Status Word and CRC Error Count.
18
NC
No Connection.
19
28
DSTi
Data ST-BUS Input
: This pin accepts a 2048 kbit/s serial stream which contains the
30 PCM or data channels to be transmitted on the CEPT trunk.
20
NC
No Connection.
21
34
C2i
2048 kbit/s System Clock (Input)
: The master clock for the ST-BUS section of the
chip. All data on the ST-BUS is clocked in on the falling edge of the C2i and output on
the rising edge. The falling edge of C2i is also used to clock out data on the CEPT
transmit link.
22
37
TxMF
Transmit Multiframe Boundary (Input)
: This input can be used to set the channel
associated and CRC transmitted multiframe boundary (clear the frame counters). The
device will generate its own multiframe if this pin is held high.
23
38
RxMF
Received Multiframe Boundary (Output)
: An output pulse delimiting the received
Multiframe boundary. (This multiframe is not related to the received CRC multiframe.)
The next frame output on the data stream (DSTo) is received as frame 0 on the CEPT
link.
24
NC
No Connection.
25
40
E2i
Extracted 2048 kHz Clock (Input)
: The falling edge of this 2048 kHz clock is used to
latch the received data (RxD). This clock input must be derived from the CEPT
received data and must have its falling edge aligned with the center of the received bit
(RxD).
26
42
F0i
Frame Pulse Input
: The ST-BUS frame synchronization signal which defines the
beginning of the 32 channel frame.
27
44
IC
Internal Connection
: Tie to V
SS
(Ground) for normal operation.
28
1
V
DD
Positive Power Supply Input
(+5 Volts).
14
6,8,
22
V
SS
Negative Power Supply Input
(Ground).
Pin Description (Continued)
Pin #
Name
Description
DIP
PLCC
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MT8980D | Digital Switch(數(shù)字開關(guān)（在微處理器控制下，轉(zhuǎn)換PCM編碼控制的話音或數(shù)據(jù)）) |
| MT8980 | ISO-CMOS ST-BUS⑩ FAMILY Digital Switch |
| MT8980D-1 | ISO-CMOS ST-BUS⑩ FAMILY Digital Switch |
| MT8980DE | ISO-CMOS ST-BUS⑩ FAMILY Digital Switch |
| MT8980DP | ISO-CMOS ST-BUS⑩ FAMILY Digital Switch |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MT8979AE | 制造商:Microsemi Corporation 功能描述: 制造商:Zarlink Semiconductor Inc 功能描述: |
| MT8979AE1 | 制造商:Microsemi Corporation 功能描述:FRAMER CRC-4/PCM 30 5V 28PDIP - Rail/Tube 制造商:Zarlink Semiconductor Inc 功能描述:FRAMER CRC-4/PCM 30 5V 28PDIP - Rail/Tube |
| MT8979AP | 制造商:MITEL 功能描述: |
| MT8979AP1 | 制造商:Microsemi Corporation 功能描述:FRAMER CRC-4/PCM 30 5V 44PLCC - Rail/Tube 制造商:MICROSEMI CONSUMER MEDICAL PRODUCT GROUP 功能描述:IC FRAMER/INTERFACE CEPT 44PLCC 制造商:Microsemi Corporation 功能描述:IC FRAMER/INTERFACE CEPT 44PLCC |
| MT8979APR | 制造商:Microsemi Corporation 功能描述: |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。