CRD42528-2 datasheet(5/50 Pages) CIRRUS

Part #	CRD42528-2

Description	Reference Design for the CS49300 and CS42528

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Manufacturer	CIRRUS [Cirrus Logic]

Direct Link	http://www.cirrus.com

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5

1. QUICK START

A PC with an ECP parallel port, a stereo analog

audio source, and powered speakers are required to

use the CRD42528 in the mode specified in this

Quick Start.

1) Install the drivers supplied with the board on

the PC. Refer to “UDSP Schematics” on

page 37 for details on installing the drivers.

2) Connect the supplied parallel port cable to J46

on the UDSP MainBoard (marked P PORT)

and to the computer’s ECP parallel port.

3) Connect the analog output from an audio

source to AIO7-8 (Left and Right Inputs) The

input channels are mapped as follows:

-

AIO8 - Left

-

AIO7 - Right

-

AIO6 - Left Surround

-

AIO5 - Right Surround

-

AIO4 - Center

-

AIO3 - Subwoofer / Low Frequency Effects

(LFE)

-

AIO2 - Surround Back Left

-

AIO1 - Surround Back Right

4) Connect powered speakers to AIO15-16. The

output channels are mapped as follows (more

speakers can be connected to the line level

outputs as required by each application):

-

AIO16 - Left

-

AIO15 - Right

-

AIO14 - Left Surround

-

AIO13 - Right Surround

-

AIO12 - Center

-

AIO11 - Subwoofer or Low Frequency Ef-

fects (LFE)

-

AIO10 - Surround Back Left or Lt

-

AIO9 - Surround Back Right or Rt

5) Connect the supplied power supply to the

power connector on the board and to an

appropriate power outlet.

6) Verify that LEDs D1, D7, D9, and D11 on the

UDSP board are lit. LED D2 will flash to

indicate that the PLD on the UDSP is

functional.

7) Open a DOS window and navigate to the

C:\CS49300\CRD42528\Configs directory.

8) Type in “setpld -r 99” on the DOS prompt.

(This reads the PLD version register and

verifies that the PC can communicate with the

board). If the driver generates the error message

“!!! Board does not appear to be connected !!!”,

then your parallel port address may not be

0x378 or your port is not ECP capable. If your

parallel port address is not 0x378, depress the

reset switch S3 and type in “setpld -r 99 -p3bc”

or “setpld -r 99 -p278” to communicate using a

different parallel port address.

9) Verify that LED D1 (marked ERR) has turned

OFF, indicating that the driver has successfully

communicated with the board.

10) If the above steps give an error, refer to “UDSP

Schematics” on page 37 and verify that the

drivers and PC have been set up as described

(and that the parallel port address is correct / set

to ECP mode).

11) If the above steps give the expected results, type

in

“ a n a log_in _96k H z ” ,

“ a n a log_ in _96 kH z

-

p3 bc ” ,

or

“analog_in_96kHz

-p278”

(depending on your parallel port address) at the

DOS prompt. This batch file will configure the

PLD, boot the DSP, and configure the CS42528

for 8 channel analog processing at 96 kHz.

12) The audio data on the Left and Right Input

connectors (AIO7-8) should now be heard on

the output.

13) The batch files use various files to configure the

software, board, and the DSP code. Each batch

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