STLC5460 datasheet(4/54 Pages) STMICROELECTRONICS

Part #	STLC5460

Description	LINE CARD INTERFACE CONTROLLER

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Manufacturer	STMICROELECTRONICS [STMicroelectronics]

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4 / 54 page

PIN DEFINITIONS AND FUNCTIONS (continued)

Symbol

Pin n PLCC

Type

Function

AS/ALE

31

I

Multiplexed A/D mode:

used to latch the address from ADn

Non Multiplexed A/D Mode:

This pin at VSS indicates Intel like interfaces

This pin at VDD indicates Motorola like interfaces.

INT

32

OD

Interrupt line, active low.

DCL

33

0

Data clock output.

FSC

34

O

Frame synchronization output.

VDD2

35

I

Power supply : 5V

VSS2

36

I

Ground.

DIN1

37

I

GCI Data input 1

DIN0

38

I

GCI Data input 0

A3

39

I (**)

Non Multiplexed Mode:

this input interfaces to the system’s address bus to select an internal

register for a read or write access.

Multiplexed Mode:

A3 at VDD, DS/NRD signal provided by the system is not inverted by the

circuit

A3 at VSS, DS/NRD signal provided by the system isinverted by the circuit

DOUT0

40

O

GCI Data Output 0

DOUT1

41

O

GCI Data Output 1

PO

42

I (**)

P0 at VSS: variable access mode

P0 at VDD: fixed access mode

NRDY/N

WAIT

43

OD

If P0 at VSS:

Intel like mode: this pin delivers NRDY

Motorola mode: this pin delivers NWAIT

RES

44

I

Reset. A logical high on this input forces the STLC5460 into the reset state

(*): (I) Input

(O) Output

(IO) In/Output

(OD) Open Drain

(**): With Pull up resistance.

DCL

FSC

DOUT0

DIN0

DOUT1

DIN1

MUX0/GCI0

MUX1/GCI1

LCIC

PCM3

PCM0

PCM1

PCM2

PDC

PFS

RxD3

TxD3

TSC3

RxD0

TxD0

TSC0

RxD1

TxD1

TSC1

RxD2

TxD2

TSC2

MICROPROCESSOR INTERFACE

D94TL159A

CLOCKS

Figure 1: GCI and PCM Interfaces.

STLC5460

4/54

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