LG MCD23 User Manual

3-46
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
PWM5_M 61 O Negative PWM output of channel 5.
PWM6_P 68 O Positive PWM output of channel 6.
PWM6_M 67 O Negative PWM output of channel
6.
PWM7_P 71 O Positive PWM output of channel 7.
PWM7_M 70 O Negative PWM output of channel
7.
PWM8_P 75 O Positive PWM output of channel 8.
PWM8_M 74 O Negative PWM output of channel
8.
PWM_HP_L_P 46 O Positive PWM output of headphone left
channel.
PWM_HP_L_M 45 O Negative PWM output of headphone left
channel.
PWM_HP_R_P 41 O Positive PWM output of headphone right channel.
PWM_HP_R_M 40 O Negative PWM output of headphone right channel.
PWM_SWL_P 37 O Positive PWM output of subwoofer
line output.
PWM_SWL_M 36 O Negative PWM output of subwoof
er line output.
System Control Interface
SPI/I2C 84 I Host interface mode (SPI or I2C) selector.
Assert ëHIGHí for SPI mode. De-assert ëLOWí for I2C mode.
Internal pull-down resistor.
SO/SDA 78 I/O SO for SPI mode or SDA for I2C
mode.
SCK/SCL 79 I SCK for SPI mode or SCL for I2C mode.
Schmitt-Trigger i
nput.
SI/I2C_AD0 82 I SI for SPI mode or Slave Address 0 for I2C mode.
Schmitt-Trigger input.
Internal pull-down resistor.
/CS/I2C_AD2 83 I Chip selector (CS) for SPI mode or Slave Address 2 for I2C
mode.
Schmitt-Trigger input.
Internal pull-down resistor.
Special Control Interface
EXT_MUTE 27 I External mute control input. Active High.
Assert ëHIGHí to mute audio output.
Internal pull-down resistor.
OVERLOAD 76 I Power stage overload indication input.
Polarity is programmable. Schmitt-Trigger input.
When OVERLOAD is asserted, all PWM audio outputs go to
ìLOWî. That shutdown process is programmable.
Internal pull-down resistor.
EPD_ENA 77 O External amplifier power device enable output.
Active High.
Test Mode
TEST_MODE1 97 I Test mode selection pin 1.
In normal operation, it should be ìLOWî or not connected.
Internal pull-down resistor.
TEST_MODE2 98 I Test mode selection pin 2.
In normal operation, it should be ìLOWî or not connected.
Internal pull-down resistor.
SCAN_ENA 99 I Scan enable. Active High.
In normal operation, it should be ìLOWî or not connected.
Internal pull-down resistor.
TEST_MODE3 100 I Test mode selection pin 3.
In normal operation, it should be ìLOWî or not connected.
Internal pull-down resistor.
All inputs and bi-directional inputs are 5 Volt tolerant. The corresponding pins can be connected to the buses that can
swing between 0V and 5V. The output-only pins are not 5V tolerant and the buses they are connected to can swing only
between 0V and 3.3V.

LG MCD23 Specifications

General

Brand	LG
Model	MCD23
Category	Stereo System
Language	English