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參數資料
| 型號： | MT8979 |
| 廠商： | Mitel Networks Corporation |
| 元件分類： | 通信及網絡 |
| 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： | 12/26頁 |
| 文件大?。?/td> | 340K |
| 代理商： | MT8979 |
MT8979
ISO-CMOS
4-172
Table 4. Master Control 2 (MCW2): Data Format for CSTi0 Channel 31
Table 5. Multiframe Alignment Signal: Data Format for CSTi1 Channel 0
on the Transmitted CEPT Link
BIT
NAME
DESCRIPTION
7
(N/A)
Keep at ‘1‘ for normal operation.
6
(N/A)
Keep at ‘0‘ for normal operation.
5
CCS
Common Channel Signalling:
If 1, then the MT8979 operates in its common channel
signalling mode. Channel 16 on the DSTi pin is transmitted on timeslot 16 of the CEPT
link, and timeslot 16 from the received CEPT link is output on channel 16 on the DSTo
pin. Channel 15 on the CSTi0 pin contains the information for the control of timeslot 16.
Channels 0 to 15 on CSTi1 and CSTo are unused.
If ‘0‘, the device is in channel associated signalling mode where channel 16 is used to
transmit the ABCD signalling bits.
4
8KHzSEL
8KHz Select:
If ‘1‘, then an 8 kHz signal synchronized to the received CEPT 2048 kbit/s
link is output on the E8Ko pin. This feature is only valid when frame synchronization is
received from the CEPT link.
If ‘0‘, then the E8Ko pin goes into its high impedance state.
3
TXAIS
Transmit Alarm Indication Signal:
If ‘1‘, then an all 1’ s alarm signal is transmitted on all timeslots.
If ‘0‘, then the timeslots functions normally.
2
TXTS16AIS
Transmit Timeslot 16 Alarm Indication Signal:
If ‘1‘, then an all 1’s alarm signal is transmitted on timeslot 16.
If ‘0‘, then timeslot 16 functions normally.
1
XCTL
External Control:
If ‘1‘, then the XCtl pin is driven high.
If ‘0‘, then the XCtl pin is driven low.
0
(N/A)
(unused)
BIT
NAME
DESCRIPTION
7-4
MA1-4
Transmit Multiframe Alignment Bits 1 to 4:
These bits are transmitted on the CEPT
2048 kbit/s link in bit positions 1 to 4 of timeslot 16 of frame 0 of the multiframe. They
should be kept at ‘0‘ to allow multiframe alignment to be detected.
3
X1
This bit is transmitted on the CEPT 2048 kbit/s link in bit position 5 of timeslot 16 of
frame 0 of the multiframe. It is a spare bit which should be kept at ‘1‘ if unused.
2
Y
This bit is transmitted on the CEPT 2048 kbit/s link in bit position 6 of timeslot 16 of
frame 0 of the multiframe. It is used to indicate the loss of multiframe alignment to the
remote end of the link. A ‘1‘ on this bit is the signal that multiframe alignment on the
received link has been lost. A ‘0’ indicates that multiframe alignment is detected.
1,0
X2,X3
These bits are transmitted on the CEPT 2048 kbit/s link in bit positions 7 and 8
respectively, of timeslot 16 of frame 0 of the multiframe. They are spare bits which
should be kept at ‘1‘ if unused.
相關PDF資料 |
PDF描述 |
|---|---|
| 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(數字開關（在微處理器控制下，轉換PCM編碼控制的話音或數據）) |
| MT8980 | ISO-CMOS ST-BUS⑩ FAMILY Digital Switch |
相關代理商/技術參數 |
參數描述 |
|---|---|
| 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 |
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