PS9604 Datasheet, PDF (5/6 Pages) List of Unclassifed Manufacturers – Stereo, 24-Bit, 192kHz PCM-to-PWM Converter for Full Digital Power Amplifier

PULSUS
PS9604
Noise shaping mode selection.
This pin selests between Noise shaping MODE0 (Low) and Noise shaping
18
NS_MODE
IN
MODE1 (High). An internal 50kΩ pull-up to VDD 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 VSS to VDD.
Mute control. Active High input.
19
MUTE
IN
Assert ‘High’ to mute both stereo outputs. Deassert ‘Low’ for normal
operation.
This input is 5V tolerant. Internal pull-down resistor.
Reset input. Active Low Schmitt-Trigger input.
The Schmitt-Trigger input allows a slowly-rising input to reset the chip
20
RESET
IN
reliably. The RESET signal must be asserted ‘Low’ during power up.
Deassert ‘High’ for normal operation.
This input is 5V tolerant.
PWM mapping method selection.
21
PWM_MAP0
IN
(PWM_MAP1, PWM_MAP0) = (0,0) : 400kHz, AD
(0,1) : 800kHz, AD
(1,0) : 400kHz, BD
22
PWM_MAP1
IN
(1,1) : 400kHz, AD
Internal pull-up resistor. Input must be driven by levels of VSS to VDD.
Modulation Index selection.
23
M_INDEX0
IN
(M_INDEX1, M_INDEX0) = (0,0) : 50.0%
(0,1) : 62.5%
(1,0) : 75.0%
24
M_INDEX1
IN
(1,1) : 87.5%
Internal pull-up resistor. Input must be driven by levels of VSS to VDD.
Input data word size selection.
This pin selects between 24 bits input word size (High) and 20 bits input
25
24/20BIT
IN
word size (Low). An internal 50kΩ pull-up to VDD 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 VSS to VDD.
26
PWM_R-
OUT Right channel Negative PWM output.
27
PWM_R+
OUT Right channel Positive PWM output.
28
VDD
-
Digital Power, +3.3V
Copyright © Pulsus Technologies Inc. 2000
5
AUGUST 2000 REV0.4