Refer to the section “Technical Information” on page 26 for
detailed specifications.
ASUS CRW-3212A User’s Manual
9
Features
The ASUS CRW-3212A is a CD-RW drive with 32X-write, 12X-rewrite, and
40X-read capabilities. The drive complies with the AT Attachment Packet
Interface (ATAPI) specification and comes equipped with the latest
innovative technologies in CD recording.
Highlighting the major characteristic of ASUS CD-RW drives, the
CRW-3212A strategically identifies the media quality at the beginning of
the recording so that it can apply the appropriate writing speeds and
ensure effective data storage. Thanks to the FlextraSpeed™ and
FlextraLink™ technologies developed by ASUS.
FlextraSpeed™ increases accuracy and reliability when rewriting across a
broad base of certified media, while FlextraLink™ prevents buffer
underrrun problems to eliminate the creation of unusable discs. The
following sub-sections describe these technologies in detail.
FlextraSpeed™ Technology
The ASUS FlextraSpeed™ technology provides the optimum solution to
ensure quality recording when using discs that require flexible speeds. The
CRW-3212A drive employs this technology that allows automatic recording
speed adjustment based on the recording media.
In addition to the fact that there are low and high quality recording media,
various other factors such as dye layer, temperature, humidity, dust,
fingerprints, etc., affect the recording characteristics of CD-R and CD-RW
discs. Due to these factors, some discs may not be able to stand the highspeed capabilities of the latest CD-RW drives. The FlextraSpeed™
technology solves this problem by automatic assessment of the disc
quality and recording capability. The recording speed is based on these
factors. If you use a high quality recording disc, you can maximize the
recording capability of the drive and get the best quality output. If you use
a low quality disc, the drive speed adjusts to the level that is most
appropriate for the disc, still optimizing the disc recording capability.
The FlextraSpeed™ technology also helps maintain the CD-RW drive
because of the controlled motor rotation speeds and reduced noise
caused by spindle air, thus prolonging the drive motor’s life and ensuring
high-quality recording.
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ASUS CRW-3212A User’s Manual
FlextraLink™ Technology
The ASUS FlextraLink™ technology provides a seamless combination of
flexibility and ultra-reliable recording quality.
FlextraLink™ incorporates a flexible strategy that prevents buffer underrun
problems caused by an empty data buffer. This CD-RW drive technology
allows continuous monitoring of the data buffer status during the write
process. Once the available data drops to approximately 1% of the total
buffer capacity, the drive stops recording and marks the last write position.
When new data is received from the host, it is loaded to the data buffer,
and the laser is repositioned to link the new data with the data already
written. FlextraLink™ uses minimal system resources so that your PC
remains fully operational throughout the writing process, and available for
other applications.
The diagram below shows the advantage of the FlextraLink™ recording
technology.
FlextraLink™ Technology Solution
Data
Data transfer
Conventional
Recording
Data
Buffer
Write Data
Memory
Write Data
slows down
Buffer
Memory
Write process
continues
Data
Data transfer
slows down
Buffer
Memory
Write process stops;
waits until there is
enough data for writing
Recording with
FlextraLink™
Technology
Write Data
ASUS CRW-3212A User’s Manual
Data
Buffer
Memory
Empty
Data
Write Data
Data transfer slower
than write process
Bad disc results
Data transfer continues
and fills buffer with
sufficient data for writing
Buffer
Memory
Write process continues
until writing is complete
11
Double Dynamic Suspension System (DDSS II)
The DDSS II is an enhanced follow up to the DDSS anti-vibration system
developed by ASUS. The DDSS CD-ROM technology is designed to
reduce the vibration generated from spindle rotation of over 8900 rpm of
40X CD-ROM drives. The DDSS II improves this feature by handling up to
over 10,000 rpm of the new 50X drives. In addition, the DDSS II stabilizes
the pick-up head of the drive in both horizontal and vertical directions,
making tracking and focusing even more precise.
Like the DDSS, the DDSS II vibration absoption structure contains a
“dynamic mass” that can absorb the vibration caused by high revolution of
spindle motor. However, the DDSS II moves the dynamic mass to be
suspended to the chassis, thus providing more stability and accuracy
when accessing data from the disc.
The following diagram illustrates the DDSS/DDSS II design structure.
DDSS / DDSS II Design Structure
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ASUS CRW-3212A User’s Manual
Zone CLV Recording Technology
The Zone Constant Linear Velocity (CLV) recording method allows you to
achieve a higher recording speed by using a different speed for each of
the four zones partitioned from the inner to the outer area in a disc.
When using the Zone CLV, the recording in Zone 1 is 16X speed, then
increases to 20X speed in Zone 2, after t1 time. In Zone 3, the recording
reaches 24X speed, after t2 time. The recording speed reaches the
maximum 32X in Zone 4, after t3.
Zone CLV Recording Method
Speed
32x
24x
20x
16x
Zone1
Zone2
t1t2
Zone3
t3
Zone4
Time
ASUS CRW-3212A User’s Manual
13
Front Panel
¤
12
Recordable
Recordable
Recordable
Rewritable
High Speed
354
R
W
32x12x40x
6
78
1. Headphone jack
This jack allows you to connect a headphone with a stereo mini-plug.
2. Headphone volume dial
This volume dial allows you to control the volume of the headphone
connected to the drive. Turning the dial to the left decreases the
volume, turning to the right increases volume.
3. Disc tray
This tray holds the disc.
4. WRITE indicator (Red LED)
This LED flashes while data is being written on the disc.
5. READ indicator (Green LED)
This LED turns ON when you place a disc on the drive tray, and stays
ON until you remove the disc. The LED flashes while data is being
read from the disc.
6. Emergency eject pinhole
In cases when you cannot eject a disc from the drive using the eject
button due to power failure or software problems, insert a pin or a
paper clip into this hole to manually eject the tray and the disc.
7. PLAY/SKIP button
This button has two functions. If the drive is idle, pressing this button
will start playing an audio disc (if one is currenly loaded in the drive)
from the first track. While in the PLAY mode, pressing this button lets
you skip to the next track on the disc.
8. STOP/EJECT button
This button has two functions. Pressing this button at any time ejects
the disc tray so you can place or remove a disc. While in PLAY mode,
pressing this button stops playing the disc loaded in the drive.
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ASUS CRW-3212A User’s Manual
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