Here are some of the Yamaha NSX-1 resources that I’ve found on-line. It took a lot of browsing to find English language resources! I apologizing for writing a rather terse blog post — just the facts, documents and links!
Please check out my own posts on this site:
I hope these resources help your exploration of the NSX-1, eVocaloid and Pocket Miku!
Sound source specifications
Sound source methods EVocaloid, Real Acoustic Sound, Wavetable
method (General MIDI)
Maximum polyphony 64
Multi-timbral Sound source 16 parts, A / D input part × 2
Waveform memory Equivalent to 4 Mbytes
Number of voices EVocaloid (eVY 1 (Japanese)) / Real Acoustic
Sound × 30 types, General MIDI × 128 kinds
Number of drum kit 1 Drum Kit (General MIDI)
Effects Reverb × 29, Chorus × 24, Insertion × 181,
Master EQ (5 Bands)
Hardware specifications
Host Interface SPI / 8 bit parallel / 16 bit parallel
Audio interface Input × 2, output × 2
Power supply 1.65 V - 3.6 V [Core] 1.02 V - 1.20 V
Power consumption [Standby] 10 µA [Operating] 12 mA to 22 mA
Package 80-pin LQFP (0.5 mm pitch, 12 mm × 12 mm),
76-ball FBGA (0.5 mm pitch, 4.9 mm × 4.9 mm)
Software specifications
Serial Comm Interface Bit length 8
Start bit 1
Stop bit 1
Parity bit none
Transfer rate 31250 bps or 38400 bps
Program change CH.1 eVocaloid only (eVY1)
Not receive program change messages
Monophonic pronunciation
CH.2 - CH.16 General MIDI voices
System exclusive message GM ON, XG parameter, Lyrics data etc.
Not received other than Yamaha ID
Some Yamaha ID still does not received
(such as music instrument specific)
Other MIDI messages Channel message
NRPN, RPN
Lyrics data Transfer by System Exclusive or NRPN messages
Continuous operating time 8 hours (eVocaloid specification)
If exceeded, requires power off, reset,
and NSX-1 reboot, etc.