HP Presario CQ20-100 Compaq Presario CQ20 Notebook PC - Maintenance and Servic - Page 77

DVD±RW and CD-RW SuperMulti Double-Layer Drive and DVD±RW and CD-RW SuperMulti Double-Layer Drive with LightScribe specifications, System DMA specifications

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Page 77 highlights

Specifications DVD±RW and CD-RW SuperMulti Double-Layer Drive and DVD±RW and CD-RW SuperMulti Double-Layer Drive with LightScribe specifications Applicable disc Access time Random Cache buffer Data transfer rate 5X DVD-RAM 8X DVD±RW 8X DVD±R 16X CD-R 16X CD-RW (High Speed) Read: Write: CD-ROM, CD-R, CD-RW, High Speed CD-RW, Ultra & Ultra+ Speed CD-RW, DVD, DVD±R/RW, DVD±R, DVD-RAM DVD-RAM (Ver.2), DVD±R, DVD±RW, DVD±Dual, CD-R, and CD-RW CD DVD < 130 ms < 150 ms 2 MB 6,750 KB/sec 10,800 KB/sec 10,800 KB/sec 3,600 KB/sec 1,500 KB/sec System DMA specifications Hardware DMA System function DMA0 Not applicable DMA1* Not applicable DMA2* Not applicable DMA3 Not applicable DMA4 Direct memory access controller DMA5* Not applicable DMA6 Not assigned DMA7 Not assigned *PC Card controller can use DMA 1, 2, or 5. 6-4 Maintenance and Service Guide

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6–4
Maintenance and Service Guide
Specifications
DVD
±
RW and CD-RW SuperMulti Double-Layer Drive and DVD
±
RW and
CD-RW SuperMulti Double-Layer Drive with LightScribe specifications
System DMA specifications
Applicable disc
Read:
Write:
CD-ROM, CD-R, CD-RW, High
Speed CD-RW, Ultra & Ultra+
Speed CD-RW, DVD,
DVD±R/RW, DVD±R,
DVD-RAM
DVD-RAM (Ver.2), DVD±R,
DVD±RW, DVD±Dual, CD-R,
and CD-RW
Access time
CD
DVD
Random
< 130 ms
< 150 ms
Cache buffer
2 MB
Data transfer rate
5X DVD-RAM
6,750 KB/sec
8X DVD±RW
10,800 KB/sec
8X DVD±R
10,800 KB/sec
16X CD-R
3,600 KB/sec
16X CD-RW (High Speed)
1,500 KB/sec
Hardware
DMA System function
DMA0
Not applicable
DMA1*
Not applicable
DMA2*
Not applicable
DMA3
Not applicable
DMA4
Direct memory access controller
DMA5*
Not applicable
DMA6
Not assigned
DMA7
Not assigned
*PC Card controller can use DMA 1, 2, or 5.