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FT810Q Datasheet(PDF) 30 Page - Future Technology Devices International Ltd.

Part # FT810Q
Description  Embedded Video Engine
PDF  60 Pages
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Manufacturer  FTDI [Future Technology Devices International Ltd.]
Direct Link  http://www.ftdichip.com
Logo FTDI - Future Technology Devices International Ltd.

FT810Q Datasheet(HTML) 30 Page - Future Technology Devices International Ltd.

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Copyright © 2015 Future Technology Devices International Limited
30
Document No.: FT_001165
FT81X
Embedded Video Engine
Datasheet Version 1.2
Clearance No.:
FTDI#440
4.6 Audio Engine
FT81x provides mono audio output through a PWM output pin, AUDIO_L. It outputs two audio sources,
the sound synthesizer and audio file playback.
4.6.1 Sound Synthesizer
A sound processor, AUDIO ENGINE, generates the sound effects from a small ROM library of waves table.
To play a sound effect listed in Table 4.3, load the REG_SOUND register with a code value and write 1 to
the REG_PLAY register. The REG_PLAY register reads 1 while the effect is playing and returns a ‘0’ when
the effect ends. Some sound effects play continuously until interrupted or instructed to play the next
sound effect. To interrupt an effect, write a new value to REG_SOUND and REG_PLAY registers; e.g. write
0 (Silence) to REG_SOUND and 1 to PEG_PLAY to stop the sound effect.
The sound volume is controlled by register REG_VOL_SOUND. The 16-bit REG_SOUND register takes an
8-bit sound in the low byte. For some sounds, marked "pitch adjust" in the table below, the high 8 bits
contain a MIDI note value. For these sounds, a note value of zero indicates middle C. For other sounds
the high byte of REG_SOUND is ignored.
Table 4-15 Sound Effect
Value
Effect
Conti
nuous
Pitch
adjust
Value
Effect
Conti
nuous
Pitch
adjust
00h
Silence
Y
N
32h
DTMF 2
Y
N
01h
square wave
Y
Y
33h
DTMF 3
Y
N
02h
sine wave
Y
Y
34h
DTMF 4
Y
N
03h
sawtooth wave
Y
Y
35h
DTMF 5
Y
N
04h
triangle wave
Y
Y
36h
DTMF 6
Y
N
05h
Beeping
Y
Y
37h
DTMF 7
Y
N
06h
Alarm
Y
Y
38h
DTMF 8
Y
N
07h
Warble
Y
Y
39h
DTMF 9
Y
N
08h
Carousel
Y
Y
40h
harp
N
Y
10h
1 short pip
N
Y
41h
xylophone
N
Y
11h
2 short pips
N
Y
42h
tuba
N
Y
12h
3 short pips
N
Y
43h
glockenspiel
N
Y
13h
4 short pips
N
Y
44h
organ
N
Y
14h
5 short pips
N
Y
45h
trumpet
N
Y
15h
6 short pips
N
Y
46h
piano
N
Y
16h
7 short pips
N
Y
47h
chimes
N
Y
17h
8 short pips
N
Y
48h
music box
N
Y
18h
9 short pips
N
Y
49h
bell
N
Y
19h
10 short pips
N
Y
50h
click
N
N
1Ah
11 short pips
N
Y
51h
switch
N
N
1Bh
12 short pips
N
Y
52h
cowbell
N
N
1Ch
13 short pips
N
Y
53h
notch
N
N
1Dh
14 short pips
N
Y
54h
hihat
N
N
1Eh
15 short pips
N
Y
55h
kickdrum
N
N
1Fh
16 short pips
N
Y
56h
pop
N
N
23h
DTMF #
Y
N
57h
clack
N
N
2Ch
DTMF *
Y
N
58h
chack
N
N
30h
DTMF 0
Y
N
60h
mute
N
N
31h
DTMF 1
Y
N
61h
unmute
N
N



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