MAS3529F datasheet(61/92 Pages) MICRONAS

61 / 92 page

DATA SHEET

MAS 35x9F

Micronas

June 30, 2004; 6251-505-1DS

4.3.6.1. PIO Handshake Lines

PCS

The PIO chip select PCS must be set to ‘0’ to activate

the PIO in operation mode.

Pin PR must be set to ‘1’ to validate data output from

MAS 35x9F PIO pins.

PRTR

OUT

Ready

read.

This

signal

indicates

that

the

MAS 35x9F is able to receive data in PIO input mode.

PRTW

OUT

Ready to write. This pin indicates that MAS 35x9F has

data available for PIO output mode.

EOD

OUT

EOD indicates the end of an DMA cycle in the IC’s PIO

input mode. In ’serial’ input mode it is used as Demand

signal, that indicates that new input data are required.

4.3.7. Serial Input Interface (SDI)

SID

DATA

IN/OUT

SII

WORD STROBE

IN/OUT

SIC

CLOCK

IN/OUT

I2S compatible serial interface A for digital audio data.

In the standard firmware this interface is not used.

Note: Please refer to Bit [0] of Table 3–5

4.3.8. Serial Input Interface B (SDIB)

SIBD

DATA

SIBI

WORD STROBE

SIBC

CLOCK

The serial interface B is primarily used as bitstream

input interface. The SIBI line must be connected to

VSS in the standard application.

4.3.9. Serial Output Interface (SDO)

SOD

DATA

OUT

SOI

WORD STROBE

OUT

SOC

CLOCK

IN/OUT

Data, Frame Indication, and Clock line of the serial

output interface. The SOI is reconfigurable and can be

adapted to several I2S compliant modes.

4.3.10. S/PDIF Input Interface

SPDI1

SPDI2

SPDIR

SPDIF1 and SPDIF2 are alternative input pins for

S/PDIF sources according to the IEC 958 consumer

specification are used in conjunction with download

software only. A switch at D0:ff6 selects one of these

pins at a time. The SPDIR pin is a common reference

for both input lines (see Fig. 5–1 on page 89).

4.3.11. S/PDIF Output Interface

SPDO

OUT

The SPDO pin provides an digital output with standard

CMOS level that is compliant to the IEC 958 consumer

specification.

4.3.12. Analog Input Interfaces

In the standard MPEG-decoding DSP firmware the

analog inputs are not used. However, they can be

selected as a source for the D/A converters

(set MIX ADC scale of the D/A Converter Source

Mixer, Register 00 06hex in Table 3–16).

MICIN

MICBI

The MICIN input may be directly used as electret

microphone input, which should be connected as

described in application information (see Fig. 5–1 on

page 89). The MICBI signal provides the supply volt-

age for these microphones.

INL

INR

INL and INR are analog line-in input lines. They are

connected to the embedded stereo A/D converter of

the MAS 35x9F. The sources should be AC-coupled.

The reference ground for these analog input pins is the

VREF pin.

4.3.13. Analog Output Interfaces

OUTL

OUT

OUTR

OUT

OUTL and OUTR are left and right analog outputs, that

may be directly connected to the headphones as

described in the application information (see Fig. 5–1

on page 89).

FILTL

FILTR

Connection to input terminal of output amplifier.Can be

used to connect a capacitance from OUTL respectively

OUTR to FILTL respectively FILTR in parallel to feed-

back resistor and thus implement a low pass filter to

reduce the out-of-band noise of the DAC.

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