DSP56011 View Datasheet(PDF) - Motorola => Freescale

Part Name

Description

Manufacturer

DSP56011

24-BIT DVD DIGITAL SIGNAL PROCESSOR

Motorola => Freescale 

Signal/Connection Descriptions

Serial Audio Interface (SAI)

SAI Transmit Section

The transmit section of the SAI has five dedicated signals.

PRELIMINARY Signal

Name

SDO0

SDO1

SDO2

SCKT

WST

Table 1-9 Serial Audio Interface (SAI) Transmit Signals

Signal

Type

State

during

Reset

Signal Description

Output Driven

high

Output Driven

high

Output Driven

high

Input Tri-

or

stated

Output

Serial Data Output 0—SDO0 is the transmitter 0 serial output.

SDO0 is driven high if transmitter 0 is disabled, during

personal reset, hardware reset and software reset, or when the

chip is in the Stop state.

Serial Data Output 1—SDO1 is the transmitter 1 serial output.

SDO1 is driven high if transmitter 1 is disabled, during

personal reset, hardware reset and software reset, or when the

chip is in the Stop state.

Serial Data Output 2—SDO2 is the transmitter 2 serial output.

SDO2 is driven high if transmitter 2 is disabled, during

personal reset, hardware reset and software reset, or when the

chip is in the Stop state.

Transmit Serial Clock—This signal provides the clock for the

Serial Audio Interface (SAI). The SCKT signal can be an output

if the transmit section is programmed as a master, or a Schmitt-

trigger input if the transmit section is programmed as a slave.

When the SCKT is an output, it provides an internally

generated SAI transmit clock to external circuitry. When the

SCKT is an input, it allows external circuitry to clock data out

of the SAI.

Input Tri-

or

stated

Output

SCKT is tri-stated if all transmitters are disabled (personal

reset), during hardware reset, software reset, or while the chip

is in the Stop state. No external pull-up is necessary.

Transmit Word Select—WST is an output if the transmit

section is programmed as a master, and a Schmitt-trigger input

if programmed as a slave. WST is used to synchronize the data

word and select the left/right portion of the data sample.

WST is tri-stated if all transmitters are disabled (personal reset),

during hardware or software reset, or while the chip is in the

Stop state. No external pull-up is necessary.

1-16

Preliminary Information

DSP56011 Technical Data Sheet, Rev. 1

MOTOROLA

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