MT8980 Ver la hoja de datos (PDF) - Mitel Networks

Número de pieza

componentes Descripción

Fabricante

MT8980

ISO-CMOS ST-BUSFAMILY Digital Switch

Mitel Networks 

MT8980D

Pin Description (continued)

Pin #

Name

40 44

DIP PLCC

Description

22- 25- D7-D5 Data 7 to 5 (Three-state I/O Pins). These are the bidirectional data pins on the

24 27

microprocessor interface.

25- 29- D4-D0 Data 4 to 0 (Three-state I/O Pins). These are the bidirectional data pins on the

29 33

microprocessor interface.

30 34 VSS Power Input. Negative Supply (Ground).

31- 35- STo7- ST-BUS Output 7 to 3 (Three-state Outputs). These are the pins for the eight 2048

35 39 STo3 kbit/s ST-BUS output streams.

36- 41- STo2- ST-BUS Output 2 to 0 (Three-state Outputs). These are the pins for the eight 2048

38 43 STo0 kbit/s ST-BUS output streams.

39 44 ODE Output Drive Enable (Input). If this input is held high, the STo0-STo7 output drivers function

normally. If this input is low, the STo0-STo7 output drivers go into their high impedance state.

NB: Even when ODE is high, channels on the STo0-STo7 outputs can go high impedance

under software control.

40 1 CSTo Control ST-BUS Output (Complementary Output). Each frame of 256 bits on this ST-BUS

output contains the values of bit 1 in the 256 locations of the Connection Memory High.

6, 18, NC No Connection.

28,

40

2-5

Share Link: