 |
Electronic Components Datasheet Search |
|
|
Electronic Components Datasheet Search |
|
MT8982AS Datasheet(PDF) 8 Page - Mitel Networks Corporation |
|
||||||||||||||||||||||||||||||
MT8982AS Datasheet(HTML) 8 Page - Mitel Networks Corporation |
|
|
8 / 14 page  MT8982 ISO-CMOS 2-38 Applications Digital Key Telephone System Figure 5 shows a block diagram of a Digital Key Telephone System (DKTS) implemented with the MT8982. This DKTS can support up to 64 connections organized in any combination of subscriber lines or trunks. A very small system consisting of six lines and one trunk can very easily and economically be designed on one board. The MT8982 significantly reduces the tracking and board space required for competitive switch matrices. Distributed Switching System The MT8982 can be used to distribute switching capability in a very large system. In Figure 6 the MT8982 is shown with the microport in serial bus mode. This allows the central microprocessor to set up and tear down connections at the remote locations by programming the remote MT8982's through their CSTi pins. A microcontroller in each remote switch would not be required. Primary Rate Serial Controller Figure 7 shows the MT8982 used in a primary rate serial control application. The MT8982 is used as the control interface from a microcontroller to MITEL’s MH89760/790 T1 Primary Rate Interfaces using the microcontroller’s serial microport. The MT8982 offloads signalling and trunk control functions from the central switch matrix leaving more capacity for switching. ST-BUS to GCI Conversion The MT8982 MiniDX may be used to provide a gateway between MITEL's ST-BUS family of components and an architecture which utilizes the General Circuit Interface (GCI) operating at 2048 kbit/s (Figure 8). The MT8982 performs automatic adaptation of the different frame pulse signals. The master frame pulse to the MT8982 can be supplied either by the ST-BUS or the GCI components. The MT8982 will then provide either a delayed or advanced frame pulse to the other components as shown in Figures 9 and 10. When an ST-BUS component is supplying the master frame pulse (F0i), the MiniDX will supply the output frame pulse (F0o) delayed by five channels. This ensures that frame integrity is maintained between the ST-BUS and GCI components. When a GCI component supplies the master frame pulse (F0i), F0o is advanced by five channels. Figure 8 shows a block diagram of a GCI to ST-BUS conversion circuit. External inversion of the clock signal is required between the ST-BUS and GCI components because the ST-BUS and GCI master C4 clocks use different edges to mark bit boundaries. To program a connection between a ST-BUS channel and a GCI channel, some channel conversion is necessary. Figure 11 shows the relationship between the ST-BUS basic access frame and the GCI basic access frame. Because the MT8982 shifts the GCI frame pulse (input or output) by five channels, all of the GCI channels must be incremented by five to be correctly addressed by the Figure 5 - Digital Key Telephone System (DKTS) MT8972 DNIC MT8972 DNIC MT8972 DNIC MT8982 MiniDx MH88630/1 C.O. Trunk To Central Office Microcontroller • • • CENTRAL DKTS CONTROLLER |
Similar Part No. - MT8982AS |
|
Similar Description - MT8982AS |
|
|
|
Link URL |
| Privacy Policy |
| ALLDATASHEET.NET |
| Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Contact us | Privacy Policy | Link Exchange | Manufacturer List All Rights Reserved©Alldatasheet.com |
| Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
|
Family Site : ic2ic.com |
icmetro.com |
English ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
