MAS3506D 查看數據表（PDF） - Micronas

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MAS3506D

WorldSpace Broadcast Channel Audio Decoder

Micronas 

MAS 3506D

PRELIMINARY DATA SHEET

2.5. Interfaces

The MAS 3506D uses an I2C control interface, a serial

input interface for the Broadcast Channel, and a digital

audio output interface for the decoded audio data (I2S

or similar). Additionally, a general-purpose parallel I/O

interface (PIO) may be used for monitoring and mode-

selection tasks. The PIO lines are controlled by the

internal firmware.

2.5.1. Broadcast Channel (BC) Input Interface

The BC input interface consists of the three pins SIC,

SII, and SID. For WorldSpace operation the SII pin is

always to be connected to VSS. The Broadcast Chan-

nel input signal format is shown in Figure 2–4. The

data values are latched with the falling edge of the SIC

signal. The input interface is asynchronous and

accepts data streams generated by the DRD 3515A

BC output.

tSICLK

Vh

VlI

BCC→(SIC)

Vh 7 6 5 4 3 2 1 0

VI

BCD→(SID)

tbw

Fig. 2–4: Schematic timing of the SDI (BC) input

The BC input can be switched to an alternate port.

This function is controlled by input pin PI18. For more

details please see Section 3.1.3. on page 13

L

CLKI

VDD

Start-up

oscillator

DCCF

8ehex

Start-up

oscillator

64...94

x2

32...47

+32

0...15

9 10

AVDD

DCSO

optional

filter

22 µH

DC/DC

converter

DCSG

+

−

COUT

330 µF

Low ESR

voltage

monitor

DCEN

PUP

WSEN

Power-On

Push Button

10 kΩ

CIN

330 µF

+ VIN ≥ 0.9 V

−

16

VSS

VSENSE

AVSS

10 nF

47 kΩ

47 kΩ

Fig. 2–5: DC/DC converter connections

10

µController

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