MAS3509F View Datasheet(PDF) -

DATA SHEET

MAS 35x9F

Table 3–9: D0 control memory cells

Memory

Address

(hex)

D0:346

Function

Name

Main I/O Control (reset = 8025hex)

MPEG

IOControlMain is used for selecting/deselecting the appropriate data input

interface and for setting up the serial data output interface. In serial input

mode the coded audio data (Layer 2, Layer 3, AAC) is expected at the serial

input interface SDIB (default). In the 8-bit-parallel input mode the PIO pins

PI[19:12] are used.

bit[15]

MP3 block input selection

0: MP3 block input mode OFF

1: MP3 block input mode ON

bit[14]

Invert serial output clock (SOC)

0 (reset) do not invert SOC

1

invert SOC

bit[13:12] Reserved, must be set to zero

bit[11]

Serial data output delay

0 (reset) no additional delay (reset)

1

additional delay of data related to word strobe

bit[10]

Reserved, must be set to zero

bit[9:8]

Input Select Main

00 (reset) serial input at interface B

01

parallel input at PIO pins PI[19...12]

10

reserved for future use

11

reserved for future use

bit[7:6]

Reserved, must be set to zero

bit[5]

SDO Word Strobe Invert

0

do not invert

1 (reset) invert outgoing word strobe signal

bit[4]

Bits per Sample at SDO

0 (reset) 32 bits/sample

1

16 bits/sample

bit[3]

Reserved, must be set to zero

bit[2]

Serial data input interface B clock invert (pin SIBC)

0

not inverted (data latched at rising clock edge)

1 (reset) incoming clock signal is inverted (data latched at

falling clock edge)

bit[1]

0 (reset)

1

DEMAND MODE (PLL off, MAS 35x9F is clock

master)

BROADCAST MODE (PLL on, clock of MAS 35x9F

locks on data stream)

bit[0]

Validate

0 (reset)

1

no forced evaluation of control memory cells

changes in control memory will become effective

Bit[0] is reset after the DSP has recognized the changes. The controller

should set this bit after the other D0 control memory cells have been initialized

with the desired values.

IOControlMain

Micronas

June 30, 2004; 6251-505-1DS

33

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