 |
Electronic Components Datasheet Search |
|
|
Electronic Components Datasheet Search |
|
MT8930C Datasheet(PDF) 5 Page - Mitel Networks Corporation |
|
||||||||||||||||||||||||||||||
MT8930C Datasheet(HTML) 5 Page - Mitel Networks Corporation |
|
|
5 / 36 page  Preliminary Information MT8930C 9-39 Functional Description The MT8930C Subscriber Network Interface Circuit (SNIC) is a multifunction transceiver providing a complete interface to the S/T Reference Point as specified in ETS 300-012, CCITT Recommendation I.430 and ANSI T1.605. Implementing both point-to-point and point-to-multipoint voice/data transmission, the SNIC may be used at either end of the digital subscriber loop. A programmable digital interface allows the MT8930C to be configured as a Network Termination (NT) or as a Terminal Equipment (TE) device. The SNIC supports 192 kbit/s (2B+D + overhead) full duplex data transmission on a 4-wire balanced transmission line. Transmission capability for both B and D channels, as well as related timing and synchronization functions, are provided on chip. The signalling capability and procedures necessary to enable customer terminals (TEs) to be activated and deactivated, form part of the MT8930C’s functionality. The SNIC handles D-channel resource allocation and prioritization for access contention resolution and signalling requirements in passive bus line configurations. Control and status information allows implementation of maintenance functions and monitoring of the device and the subscriber loop. An HDLC transceiver is included on the SNIC for link access protocol handling via the D-channel. Depacketized data is passed to and from the transceiver via the microprocessor port. Two 19 byte deep FIFOs, one for transmit and one for receive, are provided to buffer the data. The HDLC block can be set up to transmit or receive to/from either the S-interface port or the ST-BUS port. Further, the transmit destination and receive source can be independently selected, e.g., transmit to S-interface while receiving from ST-BUS. The transmit and receive paths can be separately enabled or disabled. Both, one and two byte address recognition is supported by the SNIC. A transparent mode allows data to be passed directly to the D channel without being packetized. A block diagram of the MT8930C is shown in Figure 1. The SNIC has three interface ports: a 4-wire CCITT compatible S/T interface (subscriber loop interface), a 2048 kbit/s ST-BUS serial port, and a general purpose parallel microprocessor port. This 8-bit parallel port is compatible with both Motorola or Figure 3 - SNIC Pin Connections in Various Modes 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 28 27 26 25 24 23 22 21 HALF C4bi F0bi F0od DSTi DSTo Cmode NT R/W/WR DS/RD AS/ALE CS IRQ, NDA VSS VDD VBias LTx LRx STAR Rsti AD7 AD6 AD5 AD4 AD3 AD2 AD1 AD0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 28 27 26 25 24 23 22 21 HALF C4bo F0bo F0od DSTi DSTo Cmode CK R/W/WR DS/RD AS/ALE CS IRQ, NDA VSS VDD VBias LTx LRx Rsto Rsti AD7 AD6 AD5 AD4 AD3 AD2 AD1 AD0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 28 27 26 25 24 23 22 21 HALF C4bi F0bi F0od DSTi DSTo Cmode NT AFT DinB P/SC IC IC VSS VDD VBias LTx LRx STAR Rsti DR AR M/Si MCHo MFRi SYNC/BA IS1 IS0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 28 27 26 25 24 23 22 21 HALF C4bo F0bo F0od DSTi DSTo Cmode CK PRI DinB P/SC DReq DCack VSS VDD VBias LTx LRx Rsto Rsti DR AR M/So MCHi MFRo SYNC/BA IS1 IS0 NT MODE NT MODE TE MODE TE MODE CONTROLLER MODE CONTROLLERLESS MODE |
Similar Part No. - MT8930C |
|
Similar Description - MT8930C |
|
|
Link URL |
| Privacy Policy |
| ALLDATASHEET.COM |
| Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Datasheet Upload | 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
