ES9028Q2M datasheet(14/45 Pages) ESS

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January 16, 2020

ES9028Q2M Datasheet

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

8800 • WWW.ESSTECH.COM

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

Bits

[7]

[6]

[5]

[4]

[3]

[2]

[1]

[0]

Mnemonic

automute_time

Default

Bit

Mnemonic

Description

[7:0]

automute_time

Default of 8'd0 (Automute Disabled)

Time in Seconds = 2096896 / (automute_time x DATA_CLK) with DATA_CLK in Hz

8 bit, Read-Write Register, Default = 0x68

Bits

[7]

[6]

[5]

[4]

[3]

[2]

[1]

[0]

Mnemonic

automute_loopback

automute_level

Default

Bit

Mnemonic

Description

[7]

automute_loopback

1'b0 disables automute_loopback (default)

1'b1 ramps to -infinity on automute

[6:0]

automute_level

The level (in 1dB increments) of the automute, default of 7'd104

8 bit, Read-Write Register, Default = 0x4A

Bits

[7]

[6]

[5]

[4]

[3]

[2]

[1]

[0]

Mnemonic

spdif_auto_deemph

deemph_bypass

deemph_sel

reserved *

vol_rate

Default

Bit

Mnemonic

Description

[7]

spdif_auto_deemph

1'b1 enables automatic de-emphasis select in SPDIF mode

1'b0 disables automatic de-emphasis select in SPDIF mode (default)

[6]

deemph_bypass

1'b1 disabled de-emphasis filters (default)

1'b0 enables de-emphasis filters

[5:4]

deemph_sel

2’b00 = 32kHz (default)

2’b01 = 44.1kHz

2’b10 = 48kHz

2’b11 = RESERVED

[3]

reserved *

Must be left as 1'b1 for normal operation

[2:0]

vol_rate

3'd2 by default

Sets the volume ramp rate to 0.0078125 x fs / 2(vol_rate-5) dB/s

* All Reserved Bits in Register #6 must be set to the indicated logic level to ensure correct device operation.

ES9028Q2M Datasheet(PDF) 14 Page - ESS Technology,Inc

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