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System Dma Specifications - HP Pavilion HDX Maintenance And Service Manual

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Reference scanning velocity
Track pitch
Access time
CD
DVD
HD-DVD
Digital Audio Extraction
Cache buffer
Data transfer rate
CD-ROM and CD-R
DVD-ROM
16X CD-R Write
10X CD-RW Write
4X DVD+R Write
4X DVD+RW Write
4X DVD-R Write
4X DVD-RW Write
2.4X DVD+R DL Write
3X DVD-RAM Write
1X HD-DVD Read
Bus Rate
Startup time
Stop time

System DMA specifications

Hardware DMA
DMA0
DMA1*
DMA2*
DMA3
DMA4
1.2 m/s (CD)
3.49 m/s (DVD SL)
3.84 m/s (DVD DL)
6.61 m/s (HD-DVD)
1.6µm (CD)/0.74µm (DVD)/0.4µm (HD-
DVD)
Random
< 150 MS
< 160 ms
< 330 ms
12X Max
2 MB (Minimum)
3600 KB/sec
10800 KB/sec
2400KB/sec
1500 KB/sec
5400 KB/sec
5400 KB/sec
5400 KB/sec
5400 KB/sec
3240KB/sec
4050 KB/sec
4460 KB/sec
16.6 MB/s with DMA support
< 11 sec
< 6 sec
System function
Not applicable
Not applicable
Not applicable
Not applicable
Direct memory access controller
Full stroke
< 230 ms
< 250 ms
< 515 ms
System DMA specifications
91

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