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LG GSA-4040B Service Manual page 7

Super multi dvd drive
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3.3 Data transfer rate
3.3.1 Sustained transfer rate
<Read>
CD-ROM/R.....................................................2.07 ~ 4.8 Mbytes/s (32x) Max.
CD-RW...........................................................1.5 ~ 3.6 Mbytes/s (24x) Max.
CD-DA(DAE) ..................................................1.5 ~ 3.6 Mbytes/s (24x) Max.
DVD-ROM ............Single layer......................6.88 ~ 16.2 Mbytes/s (12x) Max.
DVD-R............................................................4.57 ~ 11 Mbytes/s (8x) Max.
DVD-RW ........................................................4.57 ~ 11 Mbytes/s (8x) Max.
DVD-RAM..............Ver.1.0.............................2.77 Mbytes/s
DVD+R...........................................................4.57 ~ 11 Mbytes/s (8x) Max.
DVD+RW .......................................................4.57 ~ 11 Mbytes/s (8x) Max.
<Write>
CD-R .....................4x, 8x ..............................0.6, 1.2 Mbytes/s (Mode-1)
CD-RW ..................4x, 8x, 12x .......................0.6, 1.2, 1.8 Mbytes/s (Mode-1)
DVD-R ...................2x, 4x...............................2.77, 5.54 Mbytes/s
DVD-RW................1x, 2x...............................1.385, 2.77 Mbytes/s
DVD-RAM..............2x, 3x...............................2.77, 4.155 Mbytes/s(Ver.2.1):Without verify
DVD+R ..................2.4x, 4x............................3.32, 5.54 Mbytes/s
DVD+RW...............2.4x..................................3.32 Mbytes/s
3.3.2 Burst transfer rate
Ultra DMA Mode 2..........................................33.3 Mbytes/s Max.
Multiword DMA Mode 2..................................16.6 Mbytes/s Max.
PIO Mode 4 ....................................................16.6 Mbytes/s Max.
3.4 Access time (1/3 stroke)
* Typical value
DVD-ROM ......................................................145 ms Typ.
DVD-RAM (Ver.2.1) .......................................165 ms Typ.
CD-ROM ........................................................125ms Typ.
Note :
1) Average random access time is the typcal value of more than 50 times including latency and error correction time.
Test Disc : DVD : ALMEDIO TDV-520 / TDR-820
*) Typical value defines a measured value in normal temperature (20 deg.C.) and horizontal position.
3.5 Data error rate (Measured with 5 retries maximum)
DVD-RAM..............<10
DVD-ROM .............<10
CD-ROM................<10
Condition : It is assumed that the worst case raw error rate of the disc is 10
3.6 Data buffer capacity .......................................................2Mbytes
Dual layer ........................4.57 ~ 11 Mbytes/s (8x) Max.
Ver.2.1.............................2.77, 4.155 Mbytes/s
16x, 24x (ZCLV) ..............1.8 ~ 2.4, 1.8 ~ 3.6 Mbytes/s (Mode-1)
16x (ZCLV)......................1.8 ~ 2.4, Mbytes/s (Mode-1)
CD : ALMEDIO TCDR-701 / HITACH HCD-1
-12
-12
-12
(Mode-1)
<10
(Mode-2)
-9
(Note 1)
(Note 1)
-3
7

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