SAA7780 datasheet(24/70 Pages) PHILIPS

24 / 70 page

ThunderBird Q3D PCI Audio

SAA7780

Accelerator

Philips Semiconductors

Product Specification

1999 Sep 30

Music DAC Interface

General Purpose Input/Output

Power and Ground Pins

MSI

157

IO-T

Music DAC Serial Data Output

This signal is the serial bit stream used to transmit PCM data to a

industry standard serial DAC. Any mono or stereo PCM audio

stream can be played from the DSP to this interface to provide

music without the need for an AC’97 codec.

If the serial port is disabled, then this pin can be used for general

purpose I/O control.

MCLK

158

IO-T

Music DAC Data Bit Clock

The MSI data is synchronized to this clock used by an external

Music DAC.

If the serial port is disabled, then this pin can be used for general

purpose I/O control.

MLRCK

159

IO-T

Music DAC Data Word Clock

This signal is used to frame the left and right channel PCM data

being transmitted to the external Music DAC.

If the serial port is disabled, then this pin can be used for general

purpose I/O control.

GPIO0

154

I/O-T

General Purpose I/O Bit 0

This pin can be used for general purpose I/O control.

GPIO1

155

I/O-T

General Purpose I/O Bit 1

This pin can be used for general purpose I/O control.

GPIO2

156

I/O-T

General Purpose I/O Bit 2

This pin can be used for general purpose I/O control.

VDDIC

138,99

DPWR

Core Power

VSSIC

60,147

DGND

Core Ground

VSS

26,15,40,47,

62,74,81,90,

104,120,128,

160

DGND

Ring Ground

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