參數(shù)資料
型號(hào)： MT8979
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)： 14/30頁
文件大?。?/td> 190K
代理商： MT8979
MT8979
ISO-CMOS
4-100
Table 8. Non-Frame-Alignment Signal: Data Format for CSTi1 Channel 17
Table 9. Master Control Word 3 (MCW3): Data Format for CSTi1 Channel 18
BIT
NAME
DESCRIPTION
7
IU1
International Use 1:
When the CRC is disabled and SiMUX bit in MCW3 is disabled, this
bit is transmitted on the CEPT 2048 kbit/s link in bit position 1 of timeslot 0 of
non-frame-alignment frames . It is reserved for international use and should be kept at ‘1‘
when not used. If CRC is enabled and SiMUX is disabled, this bit is transmitted in bit 1 of
timeslot 0 for frame 13 and 15. If both CRC and SiMUX are enabled, then this bit is not
used.
6
NFAF
Transmit Non-Frame Alignment Bit:
This bit is transmitted on the CEPT 2048 kbit/s link
in bit position 2 of timeslot 0 of non-frame-alignment frames. In order to differentiate
between frame-alignment frames and non-frame-alignment frames, this bit should be kept
at ‘1‘.
5
ALM
Non-Frame Alignment Alarm:
This bit is transmitted on the CEPT 2048 kbit/s link in bit
position 3 of timeslot 0 of non-frame-alignment frames . It is used to signal an alarm to the
remote end of the CEPT link. The bit should be set to ‘1‘ to signal an alarm and should be
kept at ‘0‘ under normal operation.
4-0
NU1-5
National Use:
These bits are transmitted on the CEPT 2048 kbit/s link in bit positions 4 to
8 of timeslot 0 of non-frame-alignment frames . These bits are reserved for national use,
and on crossing international borders they should be set to ‘1‘.
BIT
NAME
DESCRIPTION
7
N/A
Keep at zero for normal operation.
6
SiMUX
When set to ‘1’, this bit will cause the SMFI CRC result to be transmitted in the next
outgoing Si1 bit in frame 13 and the SMFII CRC result to be transmitted in the next
outgoing Si2 bit in frame 15.
5
RMLOOP
Remote Loopback:
If set the RxA and RxB signals are looped to TxB and TxA
respectively.
4
HDB3en
Enable HDB3 Encoding:
A ’1’ will disable the HDB3 line coding and transmit the
information transparently.
3
Maint
Maintenance:
A ’1’ will force a terminal reframe if the CRC multiframe synchro- nization
is not achieved within 8 ms of frame synchronization. Reframe will also be generated if
more than 914 CRC errors occur within a one second interval (CRC error counter is reset
with every one second interval). A ’0’ will disable this option.
2
CRCen
Enable Cyclical Redundancy Check:
A ’1’ will enable the CRC generation on the
transmit data. A ’0’ will disable the CRC generator. The CRC receiver is always active
regardless of the state of CRCen.
1
DGLOOP
Digital Loopack:
When set, the transmitted signal is looped around from DSTi to DSTo.
The normal received data is interrupted.
0
ReFR
Force Reframe:
If set, for at least 1 frame, and then cleared the chip will begin to search
for a new frame position when the chip detects the change in state from high to low. Only
the change from high to low will cause a reframe, not a continuous low level.
相關(guān)PDF資料
PDF描述
MT8979 Ultraframer DS3/E3/DS2/E2/DS1/E1/DS0
MT8979AE Ultraframer DS3/E3/DS2/E2/DS1/E1/DS0
MT8979AP Ultraframer DS3/E3/DS2/E2/DS1/E1/DS0
MT8979AC Ultraframer DS3/E3/DS2/E2/DS1/E1/DS0
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)）)
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MT8979AC 制造商:MITEL 制造商全稱:Mitel Networks Corporation 功能描述:ISO-CMOS ST-BUS⑩ FAMILY CEPT PCM 30/CRC-4 Framer & Interface
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
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

*
*
*