sames

SA9401

8

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.

23FFH

Program 7

2380H

237FH

Program 6

2300H

22FFH

Program 5

2280H

227FH

Program 4

2200H

21FFH

Program 3

2180H

217FH

Program 2

2100H

20FFH

Program 1

2030H

207FH

Program 0

2000H

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

0000-01FFH

0

+ 6DH

CAD3_8_HI

+ 6CH

CAD3_8_LO

+ 6BH

CAD2_8_HI

+ 6AH

CAD2_8_LO

+ 69H

CAD1_8_HI

+ 68H

CAD1_8_LO

+ 67H

CAD1_8_HI

+ 66H

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

INTR_HI

+ 04H

INTR_LO

+ 03H

SILENCE

+ 02H

CYCLE_HI

+ 01H

CYCLE_LO

+ 00H

Unused

+ 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

3FFFH

Unused

2400H

23FFH

Programs

2000H

1FFFH

Tone

Blocks

0000H

16kbyte

EPROM

BASE + 1 FFH

Unused

BASE + CYCLE

BASE + CYCLE - 1

PCM Samples

BASE ADDR (b * 0200H)