MX97102 Просмотр технического описания (PDF) - Macronix International

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MX97102

ISDN S/T CONTROLLER

Macronix International 

MX97102

GCI CONNECTION

With the GCI interface, MX97102 could connect differ-

ent voice/data (V/D) application modules. Up to eight

D-channel components may be connected to the D and

C/I (Command/Indication) channels (TIC-bus). TIC-bus

arbitration is also implemented in MX97102.

Data transfers between the MX97102 and the V/D mod-

ules are done with the help of the GCI MONITOR chan-

nel protocol. Each V/D module can be accessed by an

individual address. Two intercommunication channels

IC1 and IC2 allow a 2*64kbit/s transfer rate between

voice/data modules. Figure 6 shows one GCI connec-

tion, data module A uses D-channel for data transfer, a

voice processor is connected to a programmable digi-

tal processing codec filter via IC1 and a data encryp-

tion module to a data device via IC2. Meanwhile, B1 is

used for voice communication, B2 for data communi-

cation.

D, C/I

B1

B1

MX97102

Data

Module

A

Speech

Processing

DSP Codec

Module

Data

Encryption

Data

Module

B

Microprocessor

Data

Module

Speech Modules

Data Modules

FIGURE 6: EXAMPLES OF GCI CONNECTION

GCI FUNCTIONS

In terminal applications, the GCI constitutes a powerful backplane bus offering intercommunication and sophisti-

cated control capabilities for peripheral modules. GCI frame is composed of three channels ( see Figure 6-1 below):

- Channel 0 contains 144kbit/s (for 2B+D) plus MONITOR and command/indication

channels for the layer-1 device.

- Channel 1 contains two 64kbit/s intercommunication channels plus MONITOR and

command/indication channels for other GCI devices.

- Channel 2 is used for GCI-bus arbitration. Only the command/indication are used in channel 2.

P/N:PM0473

REV. 2.5, SEP. 05, 2000

10

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