參數(shù)資料
型號(hào)： MSM6650Family
廠商： OKI SEMICONDUCTOR CO., LTD.
英文描述： Voice Synthesis IC,(話音合成芯片)
中文描述： 語音合成芯片，（話音合成芯片）
文件頁數(shù)： 34/124頁
文件大?。?/td> 694K
代理商： MSM6650FAMILY
34/124
Semiconductor
MSM6650 Family
10. STANDBY CONVERSION
When standby conversion is selected by MASK option, if the next phrase does not start within 200
ms after voice ends, the IC enters standby status and all operation stops. If restarted, it takes about
100 ms from the restart to voice start because the "pop noise" suppression circuit is in operation.
If standby conversion is not selected by the MASK option, the IC does not enter standby status even
if voice playback has ceased. Current is drawn since AOUT remains at about 1/2 V
DD
and oscillation
is in opration. If restarted, playback occurs after 350
m
s. To enter standby status when standby
conversion is not selected, the
RESET
pulse must be input.
If the
RESET
pulse is input, the output level at AOUT instantaneously goes to GND level, causing
pop noises.
Table 10.1 Standby Conversion
11. VOICE OUTPUT
In standalone mode speech is output via an internal low-pass filter (LPF). Table 12.1 shows output
level of AOUT pin. This filter consists of switched capacitors. Table 12.2 shows the relationship
between sampling frequencies and cutoff frequencies.
Table 11.1 Output Level of AOUT Pin
Playback Method
ADPCM
PCM
Melody
BEEP Tone
Lowest Level
approx. 0.15
￥
V
DD
approx. 0.25
￥
V
DD
approx. 0.25
￥
V
DD
approx. 0.25
￥
V
DD
Center Level
approx. 0.5
￥
V
DD
approx. 0.5
￥
V
DD
approx. 0.5
￥
V
DD
approx. 0.5
￥
V
DD
Highest Level
approx. 0.95
￥
V
DD
approx. 0.75
￥
V
DD
approx. 0.75
￥
V
DD
approx. 0.75
￥
V
DD
Table 11.2 Cutoff Frequencies of Low Pass Filter
Sampling Frequency
(f
SAM
)
4.0 kHz
5.3 kHz
6.4 kHz
8.0 kHz
10.6 kHz
12.8 kHz
16.0 kHz
32.0 kHz
Cutoff Frequency
(f
CUT
)
approx. 1.8 kHz
approx. 2.6 kHz
approx. 2.6 kHz
approx. 3.2 kHz
approx. 4.2 kHz
approx. 5.1 kHz
approx. 6.4 kHz
approx. 12.8 kHz
Pin Name Standby Conversion Selected
MSM6650
STBY
"L"
"H"
MSM66P54/P56
—
–03 code
–04 code
MSM6652/53/54/55/56,
MSM6652A/53A/54A/55A/56A/58A
—
No Standby Conversion Selected
Mask option
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