MSP4458G datasheet(73/85 Pages) MICRONAS

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PRELIMINARY DATA SHEET

MSP 44x8G

Micronas

6. Appendix B: Manual Mode

To adapt the modes of the STANDARD SELECT regis-

ter to individual requirements, the MSP 44x8G offers a

Manual Mode, which provides sophisticated program-

ming of the MSP 44x8G.

The Manual Mode can be used only in those cases,

where user specific requirements concerning detec-

tion, identification, or carrier positioning have to be

met.

After the setting of the STANDARD SELECT register,

the MSP 44x8G is set up for optimal behavior. There-

fore, it is not recommended to use the Manual

mode.

6.1. Demodulator Write and Read Registers for

Manual Mode

In case of Automatic Sound Select (MODUS[0]=1),

any modifications of all DCO registers listed in

Table 6–1 are ignored.

Table 6–1: Demodulator Write Registers; Subaddress: 10hex; these registers are not readable!

Demodulator

Write Registers

Address

(hex)

MSP-

Version

Description

Reset

Mode

Page

AUTO_FM/AM

00 21

4418,

44581)

1. MODUS[0]=1 (Automatic Sound Select): Switching Level threshold of

Automatic Switching between NICAM and FM/AM in case of bad NICAM

reception

2. MODUS[0]=0 (Manual Mode): Activation and configuration of Automatic

Switching between NICAM and FM/AM in case of bad NICAM reception

00 00hex

A2_Threshold

00 22

A2 Stereo Identification Threshold

00 19hex

CM_Threshold

00 24

Carrier-Mute Threshold

00 2Ahex

DCO1_LO

DCO1_HI

DCO2_LO

DCO2_HI

00 93

00 9B

00 A3

00 AB

Note: Modifications are ignored for Automatic Sound Select = on

(MODUS[0]=1)

Increment channel 1 Low Part

Increment channel 1 High Part

Increment channel 2 Low Part

Increment channel 2 High Part

00 00hex

1) not in BTSC, EIA-J, and FM-Radio mode

Table 6–2: Demodulator Read Registers; Subaddress: 11hex; these registers are not writable!

Demodulator

Read Registers

Address

(hex)

MSP-

Version

Description

Page

C_AD_BITS

00 23

4410,

4450

NICAM-Sync bit, NICAM-C-Bits, and bit[2:0] of additional data bits

ADD_BITS

00 38

NICAM: bit[10:3] of additional data bits

CIB_BITS

00 3E

NICAM: CIB1 and CIB2 control bits

ERROR_RATE

00 57

NICAM error rate, updated with 182 ms

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