Atmel SAM9773 User Manual
SAM9773
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User Guide
Table of Contents
Section 1
Configuration and Special MIDI Controls.............................................. 1-1
1.1 DAC Configuration ....................................................................................1-1
1.2 Configuration NRPN 3755H: Output Mode Select ....................................1-1
1.3 Special MIDI Controls ...............................................................................1-2
Section 2
Detailed MIDI Implementation .............................................................. 2-1
2.1 Detailed MIDI Implementation...................................................................2-1
Section 3
Sounds.................................................................................................. 3-1
3.1 Main Sounds – General MIDI....................................................................3-1
3.2 MT-32 Sound Variation #127 ....................................................................3-2
3.3 Drumset Variations (MIDI Channel 10) .....................................................3-4
Section 4
Auto-test ...............................................................................................4-1
4.1 Overview ...................................................................................................4-1
Section 5
Appendix............................................................................................... 5-1
5.1 Instruments Requiring Two Voices ...........................................................5-1
i
Table of Contents
ii
1.1 DAC Configuration
Section 1
Configuration and
Special MIDI Controls
DACSEL Configuration
GND IIS-format DAC (16 to 22 bits)
VCC Sony-format DAC, 16 bits
1.2 Configuration NRPN 3755h: Output Mode Select
MIDI message code (in hexadecimal): B0h 63h 37h, B0h 62h 55h, B0h 06h vv
76543210
00001OM00
OM: If 0, spatial effects ON. Spatial effects parameters can be controlled using NRPN
3720h (volume), 372Ch (delay time), 372Dh (stereo/mono) and 372Eh (2/4 speaker
mode) (see Section 1.3).
™
If 1, 3DMIDI
front or rear speakers using NRPN 3800h to 380Fh, reverb and chorus can also be
routed.
NRPN 38xxh = 0h: MIDI channel xxh is front speaker output
NRPN 38xxh = 7Fh: MIDI channel xxh is rear speaker output
NRPN 3810h assign all MIDI channels to front or rear speakers:
- NRPN 3810h = 0h: all MIDI channels are front speaker output
- NRPN 3810h = 07Fh: all MIDI channels are rear speaker output
NRPN 3820h and 3821h control reverb output volume :
- NRPN 3820h = 0h to 7Fh: reverb front speaker volume (Default value = 07Fh)
- NRPN 3821h = 0h to 7Fh: reverb rear speaker volume (Default value = 0h)
NRPN 3830h and 3831h control chorus output volume :
- NRPN 3830h = 0h to 7Fh: chorus front speakers volume (Default value = 07Fh)
- NRPN 3831h = 0h to 7Fh: chorus rear speakers volume (Default value = 0h)
Default power-on value: OM = 0 (Spatial effects ON)
mode, four-speaker MIDI output. Each MIDI channel can be output to
SAM9773 User Guide 1-1
Configuration and Special MIDI Controls
1.3 Special MIDI Controls
Various features of the SAM9773 are controlled by NRPN MIDI messages.
Table 1-1. NRPN MIDI Messages
NRPN
(High/Low) Description
3700h Equalizer low band (bass)
0 = -12 dB, 40h = 0 dB, 7Fh = +12 dB
3701h Equalizer med Llw band
0 = -12 dB, 40h = 0 dB, 7Fh = +12 dB
3702h Equalizer med high band
0 = -12 dB, 40h = 0 dB, 7Fh = +12 dB
3703h Equalizer high band (treble)
0 = -12 dB, 40h = 0 dB, 7Fh = +12 dB
3707h Master volume
0 to 7Fh
3708h Equalizer low cutoff freq
0 = 0 Hz, 7Fh = 4.7 kHz
3709h Equalizer med low cutoff freq
0 = 0 Hz, 7Fh = 4.2 kHz
370Ah Equalizer med high cutoff freq
0 = 0 Hz, 7Fh = 4.2 kHz
Power-up
Default
60h
40h
40h
60h
7Fh
0Ch
1Bh
72h
370Bh Equalizer high cutoff freq
0 = 0 Hz, 7Fh = 18.75 kHz
3713h Clipping mode select
0 = soft clip, 7Fh = hard clip
3715h General MIDI reverb send
0 = no send, 40h = default send, 7Fh = max
3716h General MIDI chorus send
0 = no send, 40h = default send, 7Fh = max
3718h Post-effects applied on GM
0 = Post-effects not applied, 7Fh = Post-effects applied
371Ah Post-effects applied on reverb/chorus
0 = Post-effects not applied, 7Fh = Post-effects applied
3720h Spatial effects volume
0 = no effect, 7Fh = maximum effect
3722h General MIDI volume
0 to 7Fh
3723h General MIDI pan
0 = left, 40h = center, 7Fh = right
372Ch Spatial effects delay
0 = shortest to 7Fh = longest
372Dh Spatial effects input
0 = stereo, 7Fh = mono
372Eh Spatial effects output mode
0 = 2-speaker mode, 7Fh = 4-speaker mode
40h
00h
40h
40h
7Fh
7Fh
00h
7Fh
40h
1Dh
00h
00h
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Configuration and Special MIDI Controls
Table 1-1. NRPN MIDI Messages (Continued)
NRPN
(High/Low) Description
3751h Auto-test
See Section 4.
3755h Effects on/off
See Section 1.2.
3757h System Exclusive Device ID
0 to 1Fh, 20h = all accepted
380xh 3DMIDI control, x = MIDI channel
0 = output channel to front speakers, 7Fh = output channel to
rear speakers
3810h 3DMIDI global control
0 = output all channels to front speakers, 7Fh = output all
channels to rear speakers
3820h 3DMIDI reverb volume front speakers
0 to 7Fh
3821h 3DMIDI reverb volume rear speakers
0 to 7Fh
3830h 3DMIDI chorus volume front
0 to 7Fh speakers
3831h 3DMIDI chorus volume rear speakers
0 to 7Fh
Power-up
Default
20h
00h
00h
7Fh
00h
7Fh
00h
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Configuration and Special MIDI Controls
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