MSP3410D datasheet(23/83 Pages) MICRONAS

23 / 83 page

PRELIMINARY DATA SHEET

MSP 34x0D

Micronas

6.4. Demodulator Write Registers for Short-Programming: Functions and Values

In the following, the functions of some registers are explained and their (default) values are defined:

6.4.1. Demodulator Short-Programming

Table 6–3: MSP 34x0D Demodulator Short-Programming

Demodulator Short-Programming

0020hex

TV Sound Standard

Internal Setting

Description

Code

(hex)

AD_CV2)

(see Table 6–5)

MODE_

REG2)

(see

Table 6–8)

DCO1

(MHz)

DCO2

(MHz)

FIR1/2

Coefficients

Identifica-

tion

Mode

Autodetection

0001

Detects and sets one of the standards listed below, if available. Results are to be

read out of the demodulator read register “Result of Autodetection” (section 6.6.1.)

M Dual-FM

0002

AD_CV- FM

4.72421

4.5

see Table 6–11:

Terrestrial TV

Standards

Reset, then

Standard M

B/G Dual-FM

0003

AD_CV-FM

5.74218

5.5

Reset, then

Standard

B/G

D/K1 Dual-FM

0004

AD_CV-FM

6.25781

6.5

D/K2 Dual-FM

0005

AD_CV-FM

6.74218

6.5

0006/

0007

reserved for future dual-FM standards

AUTO_

FM/AM

B/G NICAM FM

0008

AD_CV-FM

5.85

5.5

see Table 6–11:

Terrestrial TV

Standards

L NICAM AM

0009

AD_CV-AM

5.85

6.5

I NICAM FM

000A

AD_CV-FM

6.552

6.0

D/K NICAM FM

000B

AD_CV-FM

5.85

6.5

>000B

reserved for future NICAM Standards

1) corresponds to the actual setting of AUTO_FM (Address = 0021

hex)

2) bits of AD_CV or MODE_REG, which are not affected by the short-programming, must be transmitted

separately if their reset status does not fit.

Note: All parameters in the DSP section (Audio Baseband Processing), except the identification mode register,

are not affected by the Demodulator Short-Programming. They still have to be defined by the control pro-

cessor.

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