MAS3509F datasheet(39/92 Pages) MICRONAS

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DATA SHEET

MAS 35x9F

Micronas

June 30, 2004; 6251-505-1DS

Table 3–10: MP3 block input mode user interface (all addresses in hex notation)

Addr.

Name

Description

D0:346

IOControlMain

bit[15]

MP3 block input select

0: MP3 block input mode OFF

1: MP3 block input mode ON

works for input at serial input interface B

(bit[9:8] of IOControlMain = 00bin)

Reset value is 0x8024 (see Table 3–2).

R0:68

MP3BlockConfig

bit[17]

data end bit

Disables resync timeout. Should be set by the controller at the end of

an input file (file end, stop, or pause) when the last requested data

block has been fully sent.

0: resync timeout enabled

1: resync timeout disable

↔ no wait for end of block

bit[16]

reserved, set to “0”

bit[15]

start data request

0: MP3 decoder does not send data requests (wait loop)

1: MP3 decoder in operational mode, new input data will be requested

via pulses at the demand pin.

bit[14:0] input block size specific value, do not modify

Reset value is 0x6670. To set the start bit, the controller must write 0xe670.

R0:7e

PulseDelayCounter

bit[13:0] determines the variable fraction of the demand pulse length.

pulseLenVar[ns] = value * 88.58.

D0:34e

ResyncTimeout

bit[19:0] timeout after resync: timeout[

µs] = value * 3.32.

The default value is 219-1, which results in a timeout of 1.74 seconds.

For an optimized resync behavior, it is recommended to set this value

to zero.

R0:5b

SerialInConfig

bit[14:0] configuration of the serial input interface

D0:350

SoftMute

bit[0]

MP3 soft mute

0: audio output on

1: audio output soft muted

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