March 26, 2021

3.2

ES9016K2M Datasheet

19

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

8800 • www.esstech.com

Register #14: Soft Start Settings

8 bit, Read-Write Register, Default = 0x8A

Bits

[7]

[6]

[5]

[4]

[3]

[2]

[1]

[0]

Mnemonic

soft_start

soft_start_on_lock

mute_on_lock

soft_start_time

Default

1

0

0

0

1

0

1

0

Bit

Mnemonic

Description

[7]

soft_start

1'b0: Ramp the output stream to ground

1'b1: Normal operation (default) - ramp the output stream to ½ x AVCC_L/R

[6]

soft_start_on_lock

1'b0: Do not force output low when lock is lost (default)

1’b1: Force output low when lock is lost

[5]

mute_on_lock

1’b0: Do not force a mute when lock is lost (default)

1’b1: Force a mute when lock is lost

[4:0]

soft_start_time

Time for soft start ramp

= 4096 x 2(soft_start_time+1) / MCLK seconds (where MCLK is measured in Hz).

The valid range of soft-start_time is from 0 to 20.

Register #15: Volume 1 (usually selected for the Left Channel, but can be reversed using Register #11)

8 bit, Read-Write Register, Default = 0x00

Bits

[7]

[6]

[5]

[4]

[3]

[2]

[1]

[0]

Mnemonic

volume1

Default

0

0

0

0

0

0

0

0

Bit

Mnemonic

Description

[7:0]

volume1

Default to 8'd0

0dB to

–127.5dB in 0.5dB steps

Register #16: Volume 2 (usually selected for the Right Channel, but can be reversed using Register #11)

8 bit, Read-Write Register, Default = 0x00

Bits

[7]

[6]

[5]

[4]

[3]

[2]

[1]

[0]

Mnemonic

volume2

Default

0

0

0

0

0

0

0

0

Bit

Mnemonic

Description

[7:0]

volume2

Default to 8'd0

0dB to

–127.5dB in 0.5dB steps

Register #20-17: Master Trim

32 bit, Read-Write Register, Default =

32’h7ffffff. Reg 20 are the MSB’s, Reg 17 are the LSB’s.

Bits

[31:0]

Mnemonic

master_trim

Default

32'h7fffffff

This is a 32 bit value that sets the 0dB level for all volume controls. This is a signed number, so it should never exceed

32'h7fffffff (which is 231 - 1).