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FT801Q-R 数据表(PDF) 21 Page - Bridgetek Pte Ltd.

部件名 FT801Q-R
功能描述  Embedded Video Engine
PDF  44 Pages
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制造商  BRIDGETEK [Bridgetek Pte Ltd.]
网页  https://brtchip.com/
标志 BRIDGETEK - Bridgetek Pte Ltd.

FT801Q-R 数据表(HTML) 21 Page - Bridgetek Pte Ltd.

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21
FT801 Embedded Video Engine Datasheet
Version 1.3
Document Reference No.: BRT_000001
Clearance No.: BRT#003
Current
Pins
GPIO1
GPIO0
PCLK
DISP
VSYNC
HSYNC
DE
R7..R2
G7..G2
B7..B2
BACKLIGHT
MISO
INT_N
Table 4-11 Output drive current selection
Note: #Default value
4.6
Audio Engine
FT801 provides mono audio output through a PWM output pin, AUDIO_L. It outputs the 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 effects end. Some sound effects play continuously until it is interrupted or commanded 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, note value of zero indicates middle C. For other sounds the
high byte of REG_SOUND is ignored.
Value
Effect
Continuous
Pitch
adjust
Value
Effect
Continuous
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
xyloph
one
N
Y
11h
2 short pips
N
Y
42h
tuba
N
Y
12h
3 short pips
N
Y
43h
glocke
N
Y



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