MAS3549F datasheet(34/92 Pages) MICRONAS

34 / 92 page

MAS 35x9F

DATA SHEET

June 30, 2004; 6251-505-1DS

Micronas

D0:347

Interface Status Control (reset = 05

hex)

MPEG

This control cell allows to enable/disable the data I/O interfaces. In addition,

the clock of the output data interface interfaces, S/PDIF and SDO, can be set

to a low-impedance mode.

bit[6]

S/PDIF input selection (used for download modules)

0 (reset)

select S/PDIF input 1

select S/PDIF input 2

bit[5]

Enable/disable S/PDIF output

0 (reset)

enable S/PDIF output

S/PDIF output (invalid)

bit[4]

Reserved, must be set to zero

bit[3]

Enable/disable serial data output SDO

0 (reset)

SDO valid data

SDO invalid data

bit[2]

Output clock characteristic (SDO and S/PDIF outputs)

low impedance

1 (reset)

high impedance

bit[1]

reserved, must be set to zero

bit[0]

Enable/Disable SDI1)

enable

1 (reset)

disable

Both digital outputs, S/PDIF and I2S, and the D/A converters may use the

decoded audio independent of each other.

Changes at this memory address must be validated by setting bit[0] of

D0:346hex.

InterfaceControl

D0:348

Oscillator Frequency (reset = 18432

dec)

All

bit[19:0]

oscillator frequency in kHz

In order to achieve a correct internal operating frequency of the DSP, the nom-

inal crystal frequency has to be deposited into this memory cell.

Changes at this memory address must be validated by setting bit[0] of

D0:346hex.

OfreqControl

1) Note: The pins SIC, SII, SID are switched to output mode, if bit [0] = 1 (Reset value).

Table 3–9: D0 control memory cells, continued

Memory

Address

(hex)

Function

Name

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