DSP56011 View Datasheet(PDF) - Motorola => Freescale

Part Name

Description

Manufacturer

DSP56011

24-BIT DVD DIGITAL SIGNAL PROCESSOR

Motorola => Freescale 

Signal/Connection Descriptions

General Purpose Input/Output (GPIO)

GENERAL PURPOSE INPUT/OUTPUT (GPIO)

Table 1-10 General Purpose I/O (GPIO) Signals

PRELIMINARY Signal

Name

Signal Type

GPIO0–

GPIO7

Input or

Output

(standard or

open-drain)

State during

Reset

Signal Description

Disconnected

internally

General Purpose Input/Output—These signals

are used for control and handshake functions

between the DSP and external circuitry. Each

GPIO signal may be individually programmed to

be one of four states:

• Not connected

• Input

• Standard output

• Open-drain output

DIGITAL AUDIO INTERFACE (DAX)

Table 1-11 Digital Audio Interface (DAX) Signals

Signal Name

Type

ADO

Output

ACI

Input

State During

Reset

Signal Description

Output, driven Digital Audio Data Output—This signal is an

high

audio and non-audio output in the form of AES/

EBU, CP340 and IEC958 data in a biphase mark

format. The signal is driven high when the DAX is

disabled, and during hardware or software reset.

Tri-stated

Audio Clock Input—This is the DAX clock input.

When programmed to use an external clock, this

input supplies the DAX clock. The external clock

frequency must 256, 384, or 512 times the audio

sampling frequency (256 x Fs, 384 x Fs or 512 x Fs,

respectively). The ACI signal is high impedance

(tri-stated) only during hardware or software reset.

If the DAX is not used, connect the ACI signal to

ground through an external pull-down resistor to

ensure a stable logic level at the input.

MOTOROLA

Preliminary Information

DSP56011 Technical Data Sheet, Rev. 1

1-17

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