SA9401 Ver la hoja de datos (PDF) - South African Micro Electronic Systems

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Fabricante

SA9401

UNIVERSAL PABX TONE GENERATOR

South African Micro Electronic Systems 

SA9401

FIGURE 2

EXTERNAL DATA STORAGE

This section describes in detail the names and definition of the parameters which de-

fine the Tone Plan for a PABX. Values for these parameters are selected by the system

designer in accordance with the relevant standards and are saved in an external EPROM

to be addressed by the SA9401.

Reference can be made to the diagram of fig. 3 which defines the memory map of the

EPROM.

3FFFH

Unused

2400H

23FFH

Programs

2000H

1FFFH

Tone

Blocks

0000H

16kbyte

EPROM

23FFH

2380H

237FH

2300H

22FFH

2280H

227FH

2200H

21FFH

2180H

217FH

2100H

20FFH

2030H

207FH

2000H

Program 7

Program 6

Program 5

Program 4

Program 3

Program 2

Program 1

Program 0

1E00-1FFFH Tone Blk F

1C00-1DFFH

E

1A00-1BFFH

D

1800-19FFH

C

1600-17FFH

B

1400-15FFH

A

1200-13FFH

9

1000-11FFH

8

0E00-0FFFH

7

0C00-0DFFH

6

0A00-0BFFH

5

0800-09FFH

4

0600-07FFH

3

0400-05FFH

2

0200-03FFH

1

+ 6E-7FH Not Used

+66-7DH Intrude Tone

+5A-65H Tone Stream 7

+ 4E-59H

6

+ 42-4DH

5

+ 36-41H

4

+ 2A-35H

3

+ 1E-29H

2

+ 12-1DH

1

+ 06-11H

0

+00-05H

Initialisation

BASE ADDR = 2000 + p * 80H

BASE + 1 FFH

Unused

BASE + CYCLE

BASE + CYCLE - 1

PCM Samples

BASE ADDR (b * 0200H)

+ 6DH

+ 6CH

+ 6BH

+ 6AH

+ 69H

+ 68H

+ 67H

+ 66H

CAD3_8_HI

CAD3_8_LO

CAD2_8_HI

CAD2_8_LO

CAD1_8_HI

CAD1_8_LO

CAD1_8_HI

CAD0_8_LO

BASE ADDR = 2000 + p*80H

+ 11H

TIME_SLOT_n

+ 10H

CAD3_n_HI

+ 0FH

CAD3_n_LO

+ OEH

CAD2_n_HI

+ ODH

CAD2_n_LO

+ OCH

CAD1_n_HI

+ OBH

CAD1_n_LO

+ 0AH

CAD0_n_HI

+ 09H

CAD0_n-LO

+ 08H

Unused

+ 07H TONE_BLOCK_n-B

+ 06H TONE_BLOCK_n_A

BASE = 2000+ P*80+ n*CH

+ 05H

+ 04H

+ 03H

+ 02H

+ 01H

INTR_HI

INTR_LO

SILENCE

CYCLE_HI

CYCLE_LO

0000-01FFH

0

+ 00H

Unused

8

sames

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