ST5451D Ver la hoja de datos (PDF) - STMicroelectronics

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ST5451D

ISDN HDLC AND GCI CONTROLLER

STMicroelectronics 

ST5451

BLOCK DIAGRAM

PIN DESCRIPTION

NAME

PIN

CS

1

INT

25

MULT

2

I/M

4

TYPE

I

O

I

I

FUNCTION

Chip Select. A low level enables ST5451 for read/write operations.

Interrupt request is asserted by ST5451 when it request a service.

Open drain output.

Multiplexed Bus. Indicates the µP bus interface selected.

MULT = 1: multiplexed bus and DMA available.

MULT = 0: address and data bus separated.

Intel/Motorola. When MULT = 1 this pin selects either Intel or

Motorola 6805 bus.

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