HP CQ62-255TU manual System DMA specifications, Specifications, Maintenance and Service Guide

Specifications

Blu-ray ROM with LightScribe DVD±R/RW SuperMulti Double-Layer Drive specifications

Applicable disc Read: Write:

BD-ROM, BD-ROM-DL, BD-R, BD-R-DL, BD-RE, BD-RE-DL, DVD-ROM, DVD+R, DVD+R-DL, DVD+RW, DVD-R, DVD-R-DL, DVD-RW, DVD-system memory (Ver.2), CD-DA, CD-ROM (Mode 1 and mode 2), CD-ROM XA (Mode 2, form 1 and form 2), Photo CD (Single and multiple sessions), CD Extra, CD-R, CD-RW, and CD-TEXT

DVD-system memory (Ver.2), DVD+R, DVD-R, CD-R, and CD-RW

Access time	BD	DVD
Random	< 230 ms	< 180 ms
Cache buffer	4.5 MB
Data transfer rate
2X BD-system memory	9 MB/sec
8X DVD	2,400 KB/sec
16X CD-R	2,400 KB/sec
16X CD-RW	2,400 KB/sec

System DMA specifications

Hardware DMA	System function
DMA4	Direct memory access controller

Maintenance and Service Guide 6–5