STLC5464 View Datasheet(PDF) - STMicroelectronics

Part Name

Description

Manufacturer

STLC5464

MULTI-HDLC WITH n x 64 SWITCHING MATRIX ASSOCIATED

STMicroelectronics 

STLC5464

III - FUNCTIONAL DESCRIPTION (continued)

Figure 11 : D, C/I and Monitor Channel Path

DIN 5 DIN 4

DOUT 4 DOUT 5

GC I1

G C I0

D Channels

from Tx HDLC

0

0

1

1

2

S WITCHING

MATRIX

2

3

3

4

4

5

5

6

6

7

7

GC I0

GCI1

D Cha nnels

to Rx HDLC

GCI CHANNEL DEFINITION

16 Rx

C /I

16 Rx

MON

16 Tx

C/I

16 Tx

MON

INTER R UP T

CONTR OLLER

Internal Bus

III.4 - Microprocessor Interface

III.4.1 - Description

The Multi-HDLC circuit can be controlledby severa

types of microprocessors (ST9, Intel/Motorola 8 or

16 data bits interfaces) such as :

- ST9 family

- INTEL 80C188 8 bits

- INTEL 80C186 16 bits

- MOTOROLA 68000 16 bits

During the initialization of the Multi-HDLC circuit,

the microprocessor interface is informedof the type

of microprocessor that is connectedby polarisation

of three external pins MOD 0/2).

Two chip Select (CS0/1)pins are provided.CS0 will

select the internal registers and CS1 the external

memory.

Table 14 : Microprocessor Interface Selection

MOD2

Pin

0

1

1

0

0

MOD1

Pin

1

1

0

0

0

MOD0

Pin

1

1

0

0

1

Microprocessor

80C188

80C186

68000

Reserved

ST9

III.4.2 - Definition of the Interface for the differ-

ent microprocessors

The signals connectedto the microprocessor inter-

face are presented on the following figures for the

different microprocessor (see Figures 12, 13, 14,

15, 16 and 17 on Pages 29-30).

28/83

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