Amiga Audio Peripherals


Delfina (Classic)

> Company: Petsoff, Finland
> Date: 1996
> Amiga: A2000, A3000, A4000
> Interface: Zorro II
> Autoconfig ID: ID14501 / 0

DSP
Motorola DSP56002 @ 40 MHz
24 Bit Data Bus
56 Bit Accumulators
Most Instructions Executed In One Cycle
Fully Programmable

Memory
96 KB, 24 Bit SRAM, Expandable To 192 Or 384 KB
Dual Ported, Addressable By Both The DSP And Amiga – When The Amiga Is Accessing The Memory At Full Speed, DSP Is Slowed Down By 10% Maximum
One Half Of The Memory Can Be Addressed In Program And X Data Space, The Other Half Only In Y Data Space
Zero-Waitstate, 25 Ns

Audio
Crystal CS4215 Audio Codec Connected Directly To The DSP’S Serial Bus
16 Bit Stereo Digitizing And Multichannel Playback At 50 KHz
Sample Frequencies Up To 50 KHz
16 Or 8 Bit Linear, Law Or A-Law Audio Data Coding
Programmable Gain And Attenuation
Microphone And Line Level Inputs
Headphone And Line Level Outputs
On-Chip Anti-Aliasing/Smoothing Filters
AHI Driver

I/O
One Of The DSP’S Serial Port Is For The Audio Codec, The Other Is Used For RS232
All Remaining I/O Lines Are Used For The Parallel Port
Serial Baud Rate Is Internally Divided From 625000 Bps, Delfser.Device Rounds The Requested Baudrate To The Closest Available Rate – Setting A Rate Of 115200 Results In 125000 Bps
MIDI Rate 31250 Matches Exactly, With A Divider Of 20
Parallel Port Is Similar To The Amiga’S Port, Just Used By Delfpar.Device
DB9 Serial Connector
DB25 Centronics Parallel Interface