Yamaha SW1000XG Specifications download pdf (Page 7)

Answer: Yes, and the opto isolators (for all of you who worry about this) are built into the card,

so no having to go and buy expensive joystick to MIDI cables. Please note that there is no

support for DOS or DOS box, as this is not a games card.

37 Question: Does the SW1000XG have the same ADC converters are the DSP Factory, as I

see they are both 20-bit?

Answer: No, the DSP Factory uses CS5335 (20-bit 128X over-sampling) converters by Cirrus

(Crystal Semiconductor), whereas the SW1000XG uses Burr-Brown PCM1800 converters (20-

bit/64x over-sampling). The signal to noise difference between the two cards is very small.(The

PDF documents on the website indicate around 1dB of difference). Full specs which show just

how good and close to each other the converters are can be found as PDF files on the relevant

company sites.

38 Question: Is any of the host CPU’s power used when the SW1000XG is running?

Answer: The CPU power for the delivery of multiple audio tracks and communicating with the

PCI buss is common to any PCI soundcard on the market, so in this respect, yes. Unlike nearly

all other cards, however, mixing, effects etc do not touch the CPU at all as they are all in

hardware. The only other card that offers this level (and greater) of hardware mixing and effects

is the DS2416, and that doesn’t have the synth section present on the SW1000XG.

39 Question: How many IRQ’s does SW1000XG require?

Answer: The combined functionality of SW1000XG-with its multichannel analog audio I/O,

MIDI ports, and S/PDIF out—requires only a single IRQ.

40 Question: How many DMA channels will SW1000XG use?

Answer: SW1000XG is a PCI buss master card, which means that it is capable of reading

data directly from your computer’s memory. As such, no DMA channels are required.

41 Question: How many port address locations?

Answer: None.

42 Question: So it does all that it does and uses one IRQ and a bit of upper memory?

Answer: Yes (users of other soundcards that grab almost every IRQ and port address in the

book will now be kicking themselves).

43 Question: What is the bit-depth of SW1000XG’s internal audio path?

Answer: Throughout SW1000XG’s entire internal audio path, audio is handled with 24-bit

resolution. The ADC’s are 20-bit Burr-Brown, though audio signals coming from the analog

inputs are handled internally with 24-bit resolution.. Since 24-bit resolution is maintained

internally throughout the system, the S/PDIF output is good to use in some mastering

applications. However, the best audio you will get from the SW1000XG (apart from for

monitoring , where the S/PDIF is the best option), is by using a CDR machine such as the

Yamaha CDR400 or similar and using the loopback record option, to create your final stereo

master. Then you don’t have to go near analog once the audio is in from your mic/guitar etc.

44 Question: Does the SW1000XG support the mu100 performance mode voices?

Answer: Not as yet! Layering of several voices on MIDI channels is possible though, and

many users already do this with other XG cards. There is a possibility that future releases of

editors for Yamaha products that use XG will have a layering feature to allow the simulation of

performance mode voices, as performance mode voices are just layers of standard XG voices

anyway. This is planned, so hang on!

45 Question: Does the card suffer from any digital cross talk across the outputs?

Answer: None that is measurable.

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YAMAHA SW1000XG SOUNDCARD FAQ 1

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Yamaha SW1000XG Specifications Page 7

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