2.0 PERFORMANCE AND FUNCTIONAL REQUIREMENTS
2.1 GENERAL
The performance and functionality of the DVD/CD rewritable drive system is determined in part by the world-wide
standards. It is the intention of this document to adhere to these standards unless otherwise specifically noted. A
summary of these standard specifications are presented here for reference purposes only. Refer to the applicable
documents for additional detail.
2.2 SUMMARY OF STANDARD PERFORMANCE
2.2.1 DVD medium
USER DATA CAPACITY* 4.7GBytes, Single layer 12cm
(1 GBytes = 1024 x 1024 x 1024) 8.54GBytes, Dual layer 12cm
1.46Gbytes, Single layer 8cm
2.66Gbytes, Dual layer 8cm
USER DATA/BLOCK (Excluding sync, header, and ECC bytes) 2048Bytes
ADDRESS DESCRIPTION Block
RECORDING SURFACES 2
RECORDING LAYER Single or Dual
DISC DIAMETER 120 mm or 80 mm
DISC CENTER HOLE 15 mm diameter
THICKNESS 1.2 mm
TRACK PITCH 0.74 microns , typical
SCANNING VELOCITY 3.49 meters/sec , Single layer(Normal Speed)
3.84 meters/sec , Dual layer(Normal Speed)
ROTATION SPEED Varies over radius.
~1388 to 574 rpm (Normal Speed). Variable
2.2.2 CD medium
The following specification marked with an * is a calculated and practical maximum figure based on a 1.6um track
pitch.
USER DATA CAPACITY* 656MBytes, Mode 1
(1 MBytes = 1024 x 1024 ) 748MBytes, Mode 2
RECORDING/PLAYING TIME 74 minutes and 42 seconds
NUMBER OF BLOCKS/DISC* 336,150
USER DATA/BLOCK (Excluding sync, header, subheader, and ECC bytes)
2048 Bytes, Mode 1 and Mode 2 Form 1
2336 Bytes, Mode 2
2328 Bytes, Mode 2 Form 2
ADDRESS DESCRIPTION Min.,Sec.,Block
BLOCK RATE 1275 ~ 3000 Blocks/Sec.,
(Seventeen-times (17x)~Fourty-times(40x) Speed: 17-40xCAV)
AUDIO
PLAYING TIME* 74 minutes and 42 seconds
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