ES9039Q2M datasheet(21/107 Pages) ESS

21 / 107 page

VERSION 0.2.2

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

ES9039Q2M Product Datasheet

GPIO Configuration Descriptions

Analog Shutdown

Output shutdown

Output 0

Outputs a constant 1’b0

Output 1

Outputs a constant 1’b1

Clocks

• GPIO1: CLKEN_1FS (1*FS pulse clock)

• GPIO2: CLK_BCK

• GPIO3: CLK_DAC (SYS_CLK)

• GPIO4: CLK_IDAC (128*FS clock)

• GPIO5: CLKEN_1FS

• GPIO6: CLK_BCK

• GPIO7: CLK_DAC

• GPIO8: CLK_IDAC

Interrupt

Bitwise OR of all masked interrupts. See Register 10-21 for interrupt descriptions.

Mute

Mute all DAC channels.

System Mode Control

Works with Registers 46-47[15]: GPIO_DAC_MODE

When any GPIOx_CFG = 4’b6 (system mode control):

• 1’b0: Disable datapath when GPIOx input is 1’b1

• 1’b1: Enable datapath when GPIOx input is 1’b1

When GPIOx input is 1’b0, system mode is determined by Register 0[1]: DAC_MODE_REG

SRC Lock Status

SRC (Sample Rate Converter) lock status output. If the device is in a synchronous mode, output will be 1’b0.

External DEM Output

The ES9039Q2M features a configuration mode that can combine multiple ES9039Q2M devices together to increase

performance. The GPIO’s can be used to transmit and receive the NSMOD data so that multiple devices work from the

same data path. One ES9039Q2M is setup as a transmitter and the others work together as receivers. The receiver devices

work in pairs with their DAC outputs combined into parallel output stages. Multiple pairs can then be combined into a single

high-performance channel.

Note: For more information please ask your Local FAE for the External DEM Mode Application Note.

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