This 5.1 speaker system comes with a 1000 Watts Peak/500 Watts RMS power for a rich THX Certified surround sound. With the ability to decode Dolby Digital and DTS encoded soundtracks.

The Logitech Z906 is who has six class D amplifiers included, but you cannot use them if you do not have the console connected.

hardware

The main component is a Renesas D2-71583 intelligent digital amplifier and sound processor.

The system requires external firmware to boot the DSP, the EN25F10A serial flash memory has been chosen.

This is the dump data.

DE-15 Console Connector

The communication between the Digital Audio Processor and the console is done through TTL serial communication at 3.3V.

The following table illustrates the pinout.

Pin	Description	Pin	Description
6	GND	12	TX
13	RX	15	Console Enable

D2-71583 NO is 5V tolerant. If you have Arduino UNO, MEGA, etc use a Logic Level Converter.

Serial settings
Baud rate	57600
Data	8 bit
Parity	Odd
Stop	1 bit

Here is the DE-15 male as viewed from the front of the Main Board.

Enable Console

Connect pin 15 to GND.

Basic Usage

Instantiate a Z906 object and attach to Serial1, you may create multiple Z906 objects.

Z906 LOGI(Serial1)

cmd method uses single or double argument, check next tables.

LOGI.cmd(arg_a)
LOGI.cmd(arg_a, arg_b)

Examples :

LOGI.cmd(MUTE_ON)         // Enable Mute
LOGI.cmd(MAIN_LEVEL, 15)  // Set Main Level to 15

Request data

LOGI.request(MAIN_LEVEL)    // return current Main Level
LOGI.request(READ_LEVEL)    // return current Read Level
LOGI.request(CENTER_LEVEL)  // return current Center Level
LOGI.request(SUB_LEVEL)     // return current Subwoofer Level

LOGI.request(STATUS_STBY)   // return stand-by status
LOGI.request(VERSION)       // return firmware version

Single argument command

argument	description
SELECT_INPUT_1	Enable TRS 5.1 input
SELECT_INPUT_2	Enable RCA 2.0 input
SELECT_INPUT_3	Enable Optical 1 input
SELECT_INPUT_4	Enable Optical 2 input
SELECT_INPUT_5	Enable Coaxial input
SELECT_INPUT_AUX	Enable TRS 2.0 (console) input

LEVEL_MAIN_UP	Increase Main Level by one unit
LEVEL_MAIN_DOWN	Decrease Main Level by one unit
LEVEL_SUB_UP	Increase Subwoofer Level by one unit
LEVEL_SUB_DOWN	Decrease Subwoofer Level by one unit
LEVEL_CENTER_UP	Increase Center Level by one unit
LEVEL_CENTER_DOWN	Decrease Subwoofer Level by one unit
LEVEL_REAR_UP	Increase Rear Level by one unit
LEVEL_DOWN_UP	Decrease Rear Level by one unit

PWM_OFF	PWM Generator OFF
PWM_ON	PWM Generator ON

SELECT_EFFECT_3D	Enable 3D Effect in current input
SELECT_EFFECT_41	Enable 4.1 Effect in current input
SELECT_EFFECT_21	Enable 2.1 Effect in current input
SELECT_EFFECT_NO	Disable all Effects in current input

BLOCK_INPUTS	Disable signal input
NO_BLOCK_INPUTS	Enable signal input

RESET_PWR_UP_TIME	Reset Power-Up Timer
EEPROM_SAVE	Save current settings to EEPROM

MUTE_ON	Enable Mute
MUTE_OFF	Disable Mute

Double argument command

argument a	argument b	description
MAIN_LEVEL	0-255	Set Main Level to argument b value
READ_LEVEL	0-255	Set Read Level to argument b value
CENTER_LEVEL	0-255	Set Center Level to argument b value
SUB_LEVEL	0-255	Set Sub Level to argument b value

EEPROM

Use the EEPROM_SAVE function with caution. Each EEPROM has a limited number of write cycles (~100,000) per address. If you write excessively to the EEPROM, you will reduce the lifespan.

Get Temperature

return the value of main temperature sensor.

LOGI.main_sensor()

Basic Example

#include <Z906.h>

// Instantiate a Z906 object and Attach to Serial1
Z906 LOGI(Serial1);

void setup(){

Serial.begin(9600);
while(!Serial);

while(LOGI.cmd(VERSION) == 0)
{
  Serial.println("Waiting Z906 Power-Up");
  delay(1000);
}

Serial.println("Z906 Version : " + (String) LOGI.request(VERSION));

// Power ON PWM Generator
LOGI.cmd(PWM_ON);

// Select RCA 2.0 Input
LOGI.cmd(SELECT_INPUT_2);

// Disable Mute
LOGI.cmd(MUTE_OFF);

// Set Main Level to 15;
LOGI.cmd(MAIN_LEVEL, 15);
}

void loop(){

Serial.println("Temperature main sensor: " + (String) LOGI.main_sensor());

delay(1000);
}

README.md

Logitech-Z906