MSP4458 datasheet(35/85 Pages) MICRONAS

35 / 85 page

PRELIMINARY DATA SHEET

MSP 44x8G

Micronas

3.5.4. FM-Stereo Radio

<800080 00>

// Softreset

<800000 00>

<801000 3020 03>

// MODUS-Register: Automatic = on

<801200 0803 20>

// Source Sel. = (St or A) & Ch. Matr. = St

<801200 0E 24 03>

// FM/AM-Prescale = 24hex,

FM-Matrix = Sound A Mono

<801000 2000 40>

// Standard Select: FM-STEREO-RADIO

<801200 0073 00>

// Main Volume 0 dB

3.5.5. Automatic Standard Detection

A detailed software flow diagram is shown in Fig. 3–2

on page 36.

<800080 00>

// Softreset

<800000 00>

<801000 3020 03>

// MODUS-Register: Automatic = on

<801200 0803 20>

// Source Sel. = (St or A) & Ch. Matr. = St

<801200 0E 24 03>

// FM/AM-Prescale = 24hex,

FM-Matrix = Sound A Mono

<801200 1000 5A>

// NICAM-Prescale =

5Ahex

<801000 2000 01>

// Standard Select:

Automatic Standard Detection

// Wait till STANDARD RESULT contains a value

≤ 07FF

// IF STANDARD RESULT contains 0000

// do some error handling

// ELSE

<801200 0073 00>

// Main Volume 0 dB

3.5.6. Software Flow for

Interrupt driven STATUS Check

A detailed software flow diagram is shown in Fig. 3–2

on page 36.

If the D_CTR_I/O_1 pin of the MSP 44x8G is con-

nected to an interrupt input pin of the controller, the fol-

lowing interrupt handler can be applied to be automati-

cally

called

with

each

status

change

the

MSP 44x8G. The interrupt handler may adjust the dis-

play according to the new status information.

Interrupt Handler:

<80 11 02 00 <81 dd dd> // Read STATUS

// adjust display with given status information

// Return from Interrupt

MSP4458 Datasheet(PDF) 35 Page - Micronas

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