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參數(shù)資料
| 型號： | PS9604 |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | Stereo, 24-Bit, 192kHz PCM-to-PWM Converter for Full Digital Power Amplifier |
| 中文描述： | 立體聲，24位192kHz的PCM的全數(shù)字功放到PWM變換器 |
| 文件頁數(shù)： | 5/6頁 |
| 文件大小： | 241K |
| 代理商： | PS9604 |
PULSUS
PS9604
Copyright Pulsus Technologies Inc. 2000
5
AUGUST 2000 REV0.4
PREIMNARY
18
NS_MODE
IN
Noise shaping mode selection.
This pin selests between Noise shaping MODE0 (Low) and Noise shaping
MODE1 (High). An internal 50k
pull-up to V
DD
will hold NS_MODE high,
so no connection is required if Noise shaping MODE1 is required.
Internal pull-up resistor. Input must be driven by levels of V
to V
.
19
MUTE
IN
Mute control. Active High input.
Assert ‘High’ to mute both stereo outputs. Deassert ‘Low’ for normal
operation.
This input is 5V tolerant
.
Internal pull-down resistor.
20
RESET
IN
Reset input. Active Low Schmitt-Trigger input.
The Schmitt-Trigger input allows a slowly-rising input to reset the chip
reliably. The RESET signal must be asserted ‘Low’ during power up.
Deassert ‘High’ for normal operation.
This input is 5V tolerant.
21
PWM_MAP0
IN
22
PWM_MAP1
IN
PWM mapping method selection.
(PWM_MAP1, PWM_MAP0) = (0,0) : 400kHz, AD
(0,1) : 800kHz, AD
(1,0) : 400kHz, BD
(1,1) : 400kHz, AD
Internal pull-up resistor. Input must be driven by levels of V
SS
to V
DD
.
23
M_INDEX0
IN
24
M_INDEX1
IN
Modulation Index selection.
(M_INDEX1, M_INDEX0) = (0,0) : 50.0%
(0,1) : 62.5%
(1,0) : 75.0%
(1,1) : 87.5%
Internal pull-up resistor. Input must be driven by levels of V
SS
to V
DD
.
25
24/20BIT
IN
Input data word size selection.
This pin selects between 24 bits input word size (High) and 20 bits input
word size (Low). An internal 50k
pull-up to V
DD
will hold 24/20BIT high,
so no connection is required if input word size is 24 bits.
Internal pull-up resistor. Input must be driven by levels of V
SS
to V
DD
.
26
PWM_R-
OUT
Right channel Negative PWM output.
27
PWM_R+
OUT
Right channel Positive PWM output.
28
V
DD
-
Digital Power, +3.3V
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