Specifications

APPENDIX A
AppleCD 300i Specifications
54 Specifications
CD-ROM
Modes supported CD-ROM (Mode 1 and Mode 2), CD-ROM XA
(Mode 2, Form 1 and Form 2), and CD-I
(Mode 2, Form 1 and Form 2)
Block lengths supported
CD-ROM Mode 1
CD-ROM Mode 2
CD-ROM XA
2048, 1024, and 512 bytes
2340, 2336, 1024, and 512 bytes
2647, 2353, and 2336 bytes
Blocks per disc 336,150 (typical)
Data capacity 656 MB, Mode 1
748 MB, Mode 2
Address description Minutes, seconds, frames
Transfer rate (sustained) 300 KB/sec., Mode 1 (double speed)
150 KB/sec., Mode 1 (normal speed)
342.2 KB/sec., Mode 2 (double speed)
171.1 KB/sec., Mode 2 (normal speed)
Blocks per second 150 (double speed), 75 (normal speed)
Access time (typical)
Full stroke (first to last block)
Random (block to block)
Track to adjacent track
520 ms (double speed), 550 ms (normal speed)
295 ms (double speed), 350 ms (normal speed)
2 ms
SCSI transfer rate (burst) 1.5 MB/sec., Mode 1 and Mode 2, asynchronous
4 MB/sec., Mode 1 and Mode 2, synchronous
SCSI buffer memory 256 KB
Uncorrected error rate (maximum)
ECC enabled (Mode 1) < 1 bit error per 10
–12
blocks read (double speed)
< 1 bit error per 10
–15
blocks read (normal speed)
ECC disabled (Mode 1 or Mode 2) < 1 bit error per 10
–9
blocks read (double speed)
< 1 bit error per 10
–12
blocks read (normal speed)
CD-audio
Block lengths supported 2448, 2368, and 2352 bytes
Playing time 74 minutes, 42 seconds
Line output 0.7 volts RMS at 47 KΩ
Headphone output (front panel) 0.65 volts RMS at 32 Ω
Distortion < 0.04 percent at 1 KHz
Signal to noise ratio > 80 dB
Frequency response 5 Hz to 20 KHz
Table A-1 AppleCD 300i specifications (continued)