MSP4458 datasheet(11/85 Pages) MICRONAS

11 / 85 page

PRELIMINARY DATA SHEET

MSP 44x8G

Micronas

Table 2–1: Performed actions of the Automatic Sound Selection

Selected TV Sound Standard

Performed Actions

B/G-FM, D/K-FM, M-Korea,

and M-Japan

Evaluation of the identification signal and automatic switching to mono, stereo, or bilingual. Preparing four

demodulator source channels according to Table 2–2. Identification is acquired after 500 ms.

B/G-NICAM, L-NICAM, I-NICAM,

and D/K-NICAM

Evaluation of NICAM-C-bits and automatic switching to mono, stereo, or bilingual. Preparing four

demodulator source channels according to Table 2–2. NICAM detection is acquired within 150 ms.

In case of bad or no NICAM reception, the MSP switches automatically to FM/AM mono and switches

back to NICAM if possible. A hysteresis prevents periodical switching.

B/G-FM, B/G-NICAM

D/K1-FM, D/K2-FM, D/K-NICAM

Automatic searching for stereo/bilingual-identification in case of mono transmission. Automatic and non-

audible changes between Dual-FM and FM-NICAM standards while listening to the basic FM-Mono sound

carrier.

Example: If starting with B/G-FM-Stereo, there will be a periodical alternation to B/G-NICAM in the

absence of FM-Stereo/Bilingual or NICAM-identification. Once an identification is detected, the MSP

keeps the corresponding standard.

BTSC-STEREO, FM Radio

Evaluation of the pilot signal and automatic switching to mono or stereo. Preparing four demodulator

source channels according to Table 2–2. Detection of the SAP carrier. Pilot detection is acquired after

200 ms.

BTSC-SAP

In the absence of SAP, the MSP switches to BTSC-Stereo if available. If SAP is detected, the MSP

switches automatically to SAP (see Table 2–2).

Table 2–2: Sound modes for the demodulator source channels with Automatic Sound Select

Source Channels in Automatic Sound Select Mode

Broadcasted

Sound

Standard

Selected

MSP Standard

Code3)

Broadcasted

Sound Mode

FM/AM

(source select: 0)

Stereo or A/B

(source select: 1)

Stereo or A

(source select: 3)

Stereo or B

(source select: 4)

M-Korea

B/G-FM

D/K-FM

M-Japan

03, 081)

04, 05, 0B1)

MONO

Mono

STEREO

Stereo

BILINGUAL:

Languages A and B

Left = A

Right = B

Left = A

Right = B

B/G-NICAM

L-NICAM

I-NICAM

D/K-NICAM

(with high

deviation FM)

08, 032)

0B, 042), 052)

NICAM not available or

error rate too high

analog Mono

MONO

analog Mono

NICAM Mono

STEREO

analog Mono

NICAM Stereo

BILINGUAL:

Languages A and B

analog Mono

Left = NICAM A

Right = NICAM B

NICAM A

NICAM B

BTSC

20, 21

MONO

Mono

STEREO

Stereo

MONO+SAP

Mono

STEREO+SAP

Stereo

MONO+SAP

Left = Mono

Right = SAP

Left = Mono

Right = SAP

Mono

SAP

STEREO+SAP

Left = Mono

Right = SAP

Left = Mono

Right = SAP

Mono

SAP

FM Radio

MONO

Mono

STEREO

Stereo

1) The Automatic Sound Select process will automatically switch to the mono compatible analog standard.

2) The Automatic Sound Select process will automatically switch to the mono compatible digital standard.

3) The MSP Standard Codes are defined in Table 3–7 on page 20.

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