ES9822PRO datasheet(12/126 Pages) ESS

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ES9822 PRO Product Datasheet

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

GPIO

gpio#_config

function

I/O Direction

analog shutdown

Shutdown (default)

Aux Inputs

Inputs

Aux Outputs

Output

RAW data outputs

Output

Interrupt Ch1 clip

Output

Interrupt Ch2 clip

Output

Reserved

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

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

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

•

Output pin

GPIOxx_IE = 1’b0

GPIOxx_OE = 1’b1

•

In/Out pin (Master Mode)

GPIOxx_IE = 1’b1

GPIOxx_OE = 1’b1

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

Data pins may be re-mapped to other GPIO via the System Registers. When utilizing GPIO pins 4-6, it is important to enable the TDM_GPIO456 bit.

GPIO 4-6 TDM Enable Register

•

TDM GPIO Re-mapping Registers

•

GPIO Configuration Registers

•

Registers 80-91

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