ES9039Q2M datasheet(12/107 Pages) ESS

12 / 107 page

VERSION 0.2.2

ES9039Q2M Product Datasheet

ESS TECHNOLOGY, INC. 109 Bonaventura Drive, San Jose, CA 95134, USA Tel (408) 643-8800 • WWW.ESSTECH.COM

Hardware Mode

The ES9039Q2M has pre-configured modes that can be set with external pin configuration. These modes configure the

DAC for different input serial data rates and set the DAC muting.

Note: All Synchronous hardware modes have Automatic FS (sample rate) detection enabled.

These modes are set with pins:

• MODE (Pin 29)

• HW0 (Pin 16)

• HW1 (Pin 15)

• HW2 (Pin 19)

• MUTE_CTRL (Pin 20)

Each hardware mode pin has 4 states:

• 0 - Pin directly connected to GND

• 1 - Pin directly connected to AVDD

• Pull 0 - Pin pulled to GND through 47kΩ resistor

• Pull 1 - Pin pulled to AVDD through 47kΩ resistor

In Hardware mode, most GPIOs have specific functions.

GPIO #

Input/Output

HW Mode Function

GPIO1

Output

Automute Status (AND of both channels)

GPIO2

Output

SRC Lock (Reg 249[2] register for readback)

GPIO3

Output

Daisy chain mode data output

GPIO4

Input

S/PDIF input in HW mode (HW modes 16-18)

GPIO5

Input

DoP HW enable:

• 1’b0: DoP disabled

• 1’b1: DoP enabled

Note: Requires a PCM (I²S/LJ/TDM) HW mode to be selected

GPIO6

Input

FIR filter selection:

• 1’b0: minimum phase (register default)

• 1’b1: Linear phase fast roll-off

Note: See section on Digital Filters for more information

GPIO7

Ground

Must be connected to Ground in HW mode (Pin 27)

GPIO8

Input

CAL_RES input (Calibration Resistor) See calibration section for

more information

Table 5 - GPIO Function in Hardware Mode

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