ES9842PRO datasheet(19/167 Pages) ESS

19 / 167 page

VERSION 0.5

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

ES9842 PRO Product Datasheet

GPIO

GPIO#_CONFIG

Function

I/O Direction

analog shutdown

Shutdown (default)

Aux Inputs

Inputs

Aux Outputs

Output

RAW data outputs

Output

Interrupt Ch1 peak

Output

Interrupt Ch2 peak

Output

Interrupt Ch3 peak

Output

Interrupt Ch4 peak

Output

SPDIF data output

Output

PWM1

Output

PWM2

Output

PWM3

Output

CLK IADC

Output

CLK ADC

Output

1’b0

Output

1’b1

Output

Table 2 – Standard GPIO Functions

For configuring pins as inputs, outputs, or Input/Outputs:

• Input pin

Registers 87-86: GPIOxx_IE = 1’b1 (Input Enable),

Registers 89-88: GPIOxx_OE = 1b’0 (Input Enable),

• Output pin

Registers 87-86: GPIOxx_IE = 1’b0

Registers 89-88: GPIOxx_OE = 1’b1

• In/Out pin (Master Mode)

Registers 87-86: GPIOxx_IE = 1’b1

Registers 89-88: GPIOxx_OE = 1’b1

In Master mode GPIO1 & GPIO 2 should be configured as In/Out pins.

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